brass inserts - sherexfasteners.sherex.com/asset/2009 brass insert catalog.pdfb-brass 1-no flange...

Brass InsertsFor Plastics

n For use in straight holes

n Self aligning lead in for accurate installation

n Opposing diagonal knurls provide excellent

torque resistance

n Undercuts for superior tensile strength

n Installed ultrasonically or with heat


n Self aligning lead in for accurate installation

n Flange provides larger loading surface, and

can be used to make an electrical contact

n Opposing diagonal knurls provide excellent

torque resistance



n Self orienting – good for automation



n Mating screw expands the brass insert

locking it in place

n Can be installed in thermoset or

thermoplastic materials

n Press In installation eliminates the need

for heat or ultrasonic


n Mating screw expands the brass insert

locking it in place

n Flange provides larger loading surface

n Can be installed in thermoset or

thermoplastic materials

n Press In installation eliminates the need

for heat or ultrasonic

n Designed for SMC, Thermoset,

and other brittle plastics

n No flange allows for flush installation

n Installed with a tap wrench or drill press with tapping head

n Designed for SMC, Thermoset,

and other brittle plastics

n Flange provides larger bearing surface

n Installed with a tap wrench or drill press with tapping head

n Molded in place into plastics

n For use in tapered holes

n Taper allows for accurate alignment

and rapid installation


B1U PAGE 1

Sherex is a global leader in the design, manufacture, and distribution of rivet nuts, threaded inserts for plastics, and other specialty fasteners. Our complete line of products is manufactured to a high quality standard, as we are a TS16949 certified manufacturer, along with ISO 9001:2000 accredited with locations in the USA, Mexico, and Taiwan.

Applications for the threaded inserts for plastics vary from communication equipment, automotive industry, computer industry, and anywhere strong durable threads are required in plastics.

B2U PAGE 2

B3U PAGE 3

B4U PAGE 4

B1M PAGE 6

B1P PAGE 7

B2P PAGE 8

B1T PAGE 9

B2T PAGE 10

INDEX

TECHNICAL GUIDEPAGE 11, 12

APPLICATION INFORMATIONPAGE 13

UNIFIED THREAD Class 2B per ANSI/ASME B1.1 Dimensions in inches

Standard Length Short Length

Thread Size Part Number C ±0.004

H ±0.005

Hole Diameter +.003-.000

D ±0.005

Hole Depth Minimum

D ±0.005

Hole Depth Minimum

#2-56 UNC B1U-0256-115 0.122 0.142 0.127 - - 0.115 0.150 #2-56 UNC B1U-0256-157 0.122 0.142 0.127 0.157 0.192 - - #4-40 UNC B1U-0440-135 0.153 0.186 0.158 - - 0.135 0.170 #4-40 UNC B1U-0440-226 0.153 0.186 0.158 0.226 0.261 - - #6-32 UNC B1U-0632-150 0.184 0.217 0.189 - - 0.150 0.185 #6-32 UNC B1U-0632-281 0.184 0.217 0.189 0.281 0.316 - - #8-32 UNC B1U-0832-185 0.218 0.249 0.223 - - 0.185 0.220 #8-32 UNC B1U-0832-321 0.219 0.249 0.223 0.321 0.356 - - #10-24 UNC B1U-1024-225 0.248 0.279 0.253 - - 0.225 0.260 #10-24 UNC B1U-1024-375 0.248 0.279 0.253 0.375 0.410 - - #10-32 UNF B1U-1032-225 0.248 0.279 0.253 - - 0.225 0.260 #10-32 UNF B1U-1032-375 0.248 0.279 0.253 0.375 0.410 - -

-20 UNC B1U-2520-300 0.311 0.340 0.316 - - 0.300 0.335 -20 UNC B1U-2520-500 0.311 0.340 0.316 0.500 0.535 - - -28 UNF B1U-2528-300 0.311 0.340 0.316 - - 0.300 0.335 -28 UNF B1U-2528-500 0.311 0.340 0.316 0.500 0.535 - -

3/8-16 UNC B1U-3716-375 0.464 0.498 0.469 - - 0.375 0.410 3/8-16 UNC B1U-3716-500 0.464 0.498 0.469 0.500 0.535 - - 3/8-24 UNF B1U-3724-375 0.464 0.498 0.469 - - 0.375 0.410 3/8-24 UNF B1U-3724-500 0.464 0.498 0.469 0.500 0.535 - -

METRIC THREAD 6H ISO Metric Dimensions in millimeters



H ±0.13

Hole Diameter +0.08-0.0

D ±0.13

Hole Depth Minimum

D ±0.13

Hole Depth Minimum

M2X0.4 ISO B1U-240-2.9 3.10 3.60 3.23 - - 2.90 3.80 M2X0.4 ISO B1U-240-4.0 3.10 3.60 3.23 4.00 4.90 - - M2.5X0.45 ISO B1U-2545-3.45 3.89 4.72 4.01 - - 3.45 4.35 M2.5X0.45 ISO B1U-2545-5.74 3.89 4.72 4.01 5.74 6.65 - - M3X0.5 ISO B1U-350-3.45 3.89 4.72 4.01 - - 3.45 4.35 M3X0.5 ISO B1U-350-5.74 3.89 4.72 4.01 5.74 6.65 - - M3.5X0.6 ISO B1U-3560-3.8 4.67 5.51 4.80 - - 3.80 4.70 M3.5X0.6 ISO B1U-3560-7.14 4.67 5.51 4.80 7.14 8.05 - - M4X0.7 ISO B1U-470-4.7 5.54 6.32 5.66 - - 4.70 5.60 M4X0.7 ISO B1U-470-8.15 5.54 6.32 5.66 8.15 9.05 - - M5X0.8 ISO B1U-580-5.7 6.30 7.09 6.43 - - 5.70 6.60 M5X0.8 ISO B1U-580-9.53 6.30 7.09 6.43 9.53 10.40 - - M6X1 ISO B1U-610-7.6 7.90 8.64 8.03 - - 7.60 8.50 M6X1 ISO B1U-610-12.7 7.90 8.64 8.03 12.70 13.60 - -

ORDERING INFORMATION: B 1 U 1024 XXXMaterial Type Series Thread Size LengthB-Brass 1-No Flange U-Ultrasonic

1

• For use in straight holes

• Self aligning lead in for accurate installation

• Opposing diagonal knurls provide excellent torque resistance

• Undercuts for superior tensile strength

• Installed ultrasonically or with heat

Sherex recommends Ultrasonic and Heat Staking Installation methods for this series, see page 11 of the catalog for more information on these methods.

Specials are available upon request

B1U BRASS INSeRT SeRIeS

400 Riverwalk Pkwy, Suite 600 • Tonawanda, NY 14150 • Phone: 716-875-0315 • Fax: 716-875-0358Toll Free: 866-4-SHEREX • www.sherex.com

•

•




A ±0.005

S ±0.004


D ±0.005

Hole Depth Minimum

D ±0.005

Hole Depth Minimum

#2-56 UNC B2U-0256-115 0.122 0.188 0.018 0.127 - - 0.115 0.150 #2-56 UNC B2U-0256-157 0.122 0.188 0.018 0.127 0.157 0.192 - - #4-40 UNC B2U-0440-135 0.153 0.219 0.021 0.158 - - 0.135 0.170 #4-40 UNC B2U-0440-226 0.153 0.219 0.021 0.158 0.226 0.261 - - #6-32 UNC B2U-0632-150 0.184 0.250 0.027 0.189 - - 0.150 0.185 #6-32 UNC B2U-0632-281 0.184 0.250 0.027 0.189 0.281 0.316 - - #8-32 UNC B2U-0832-183 0.218 0.281 0.033 0.223 - - 0.183 0.216 #8-32 UNC B2U-0832-321 0.218 0.281 0.033 0.223 0.321 0.356 - - #10-24 UNC B2U-1024-225 0.248 0.313 0.040 0.253 - - 0.225 0.260 #10-24 UNC B2U-1024-375 0.248 0.313 0.040 0.253 0.375 0.410 - - #10-32 UNF B2U-1032-225 0.248 0.313 0.040 0.253 - - 0.225 0.260 #10-32 UNF B2U-1032-375 0.248 0.313 0.040 0.253 0.375 0.410 - -

-20 UNC B2U-2520-300 0.311 0.375 0.050 0.316 - - 0.300 0.335 -20 UNC B2U-2520-500 0.311 0.375 0.050 0.316 0.500 0.535 - - -28 UNF B2U-2528-300 0.311 0.375 0.050 0.316 - - 0.300 0.335 -28 UNF B2U-2528-500 0.311 0.375 0.050 0.316 0.500 0.535 - -

3/8-16 UNC B2U-3716-375 0.464 0.550 0.065 0.469 - - 0.375 0.410 3/8-16 UNC B2U-3716-500 0.464 0.550 0.065 0.469 0.500 0.535 - - 3/8-24 UNF B2U-3724-375 0.464 0.550 0.065 0.469 - - 0.375 0.410 3/8-24 UNF B2U-3724-500 0.464 0.550 0.065 0.469 0.500 0.535 - -




A ±0.13

S ±0.1

Hole Diameter +0.08-0.0

D ±0.13

Hole Depth Minimum

D ±0.13

Hole Depth Minimum

M2X0.4 ISO B2U-240-2.9 3.10 4.78 0.46 3.23 - - 2.90 3.50 M2X0.4 ISO B2U-240-4.0 3.10 4.78 0.46 3.23 4.00 4.90 - - M2.5X0.45 ISO B2U-2545-3.45 3.89 5.56 0.53 4.01 - - 3.45 4.35 M2.5X0.45 ISO B2U-2545-5.74 3.89 5.56 0.53 4.01 5.74 6.65 - - M3X0.5 ISO B2U-350-3.45 3.89 5.56 0.53 4.01 - - 3.45 4.35 M3X0.5 ISO B2U-350-5.74 3.89 5.56 0.53 4.01 5.74 6.65 - - M3.5X0.6 ISO B2U-3560-3.8 4.67 6.35 0.69 4.80 - - 3.80 4.70 M3.5X0.6 ISO B2U-3560-7.14 4.67 6.35 0.69 4.80 7.14 8.05 - - M4X0.7 ISO B2U-470-4.7 5.54 7.14 0.84 5.66 - - 4.70 5.60 M4X0.7 ISO B2U-470-8.15 5.54 7.14 0.84 5.66 8.15 9.05 - - M5X0.8 ISO B2U-580-5.7 6.30 7.95 1.02 6.43 - - 5.70 6.60 M5X0.8 ISO B2U-580-9.53 6.30 7.95 1.02 6.43 9.53 10.40 - - M6X1 ISO B2U-610-7.6 7.90 9.53 1.27 8.03 - - 7.60 8.50 M6X1 ISO B2U-610-12.7 7.90 9.53 1.27 8.03 12.70 13.60 - -

ORDERING INFORMATION: B 2 U 1024 XXXMaterial Type Series Thread Size LengthB-Brass 2-Flange U-Ultrasonic Under Flange

2

• For use in straight holes• Self aligning lead in for accurate installation • Flange provides larger loading surface and can be used to make an electrical contact• Opposing diagonal knurls provide excellent torque resistance• Installed ultrasonically or with heat







H ±0.004


D ±0.005

Hole Depth Minimum

#2-56 UNC B3U-0256-157 0.121 0.143 0.126 0.157 0.192 #4-40 UNC B3U-0440-226 0.152 0.187 0.157 0.226 0.261 #6-32 UNC B3U-0632-281 0.183 0.218 0.188 0.281 0.316 #8-32 UNC B3U-0832-321 0.216 0.251 0.221 0.321 0.356 #10-24 UNC B3U-1024-375 0.247 0.282 0.252 0.375 0.410 #10-32 UNF B3U-1032-375 0.247 0.282 0.252 0.375 0.410

-20 UNC B3U-2520-500 0.310 0.345 0.315 0.500 0.535 5/16-18 UNC B3U-3118-500 0.372 0.407 0.377 0.500 0.535



H ±0.1


D ±0.13

Hole Depth Minimum

M1.6X0.35 ISO B3U-1635-3.18 2.41 2.97 2.54 3.18 4.10 M2X0.4 ISO B3U-240-3.99 3.07 3.63 3.20 3.99 4.90 M2.5X0.45 ISO B3U-2545-5.74 3.86 4.75 3.99 5.74 6.65 M3X0.5 ISO B3U-350-5.74 3.86 4.75 3.99 5.74 6.65 M3.5X0.6 ISO B3U-3560-8.15 4.65 5.54 4.78 8.15 8.05 M4X0.7 ISO B3U-470-9.53 5.49 6.38 5.61 9.53 9.05 M5X0.8 ISO B3U-580-9.53 6.27 7.16 6.40 9.53 10.50 M6X1 ISO B3U-610-12.7 7.87 8.76 8.00 12.70 13.60 M8X1.25 ISO B3U-8125-12.7 9.45 10.34 9.58 12.70 13.60

ORDERING INFORMATION

B

3

U

1024

XXX

Material

Type

Series

Thread Size

Length

B-Brass

3-Symmetrical

U-Ultrasonic

3

• For use in straight holes• Self orienting - good for automation• Installed ultrasonically or with heat





400 Riverwalk Pkwy, Suite 600 ~ Tonawanda, NY 14150 ~ Phone: 716-875-0315 ~ Fax: 716-875-0358 Toll Free: 866-4-SHEREX ~ www.sherex.com


• For use in tapered holes

•

Taper allows for rapid and accurate alignment prior to installation


Hole Size


H ±0.005

D ±0.004

A ±0.001

B ±0.001

Minimum Depth

Minimum Boss Diameter

#0-80 UNC B4U-0080-115 .123 .141 .115 .145 .282 #0-80 UNC B4U-0080-188 .112 .141 .188 .218 .282 #2-56 UNC B4U-0256-115 .123 .141 .115 .145 .282 #2-56 UNC B4U-0256-188 .112 .141 .188 .218 .282 #4-40 UNC B4U-0440-135 .157 .172 .135 .165 .344 #4-40 UNC B4U-0440-219 .146 .172 .219 .249 .344 #6-32 UNC B4U-0632-150 .203 .219 .150 .180 .438 #6-32 UNC B4U-0632-250 .190 .219 .250 .280 .438 #8-32 UNC B4U-0832-185 .230 .250 .185 .215 .500 #8-32 UNC B4U-0832-312 .213 .250 .312 .342 .500 #10-24 UNC B4U-1024-225 .272 .297 .225 .255 .594 #10-24 UNC B4U-1024-375 .251 .297 .375 .405 .594 #10-32 UNF B4U-1032-225 .272 .297 .225 .255 .594 #10-32 UNF B4U-1032-375 .251 .297 .375 .405 .594

-20 UNC B4U-2520-300 .354 .375 .300 .330 .750 -20 UNC B4U-2520-500 .332 .375 .500 .530 .750 -28 UNF B4U-2528-300 .354 .375 .300 .330 .750 -28 UNF B4U-2528-500 .332 .375 .500 .530 .750

5/16-18 UNC B4U-3118-335 .439 .469 .335 .365 .938 5/16-18 UNC B4U-3118-562 .406 .469 .562 .436 .938 3/8-16 UNC B4U-3716-375 .532 .563 .375 .405 1.126 3/8-16 UNC B4U-3716-625 .493 .563 .625 .655 1.126

ORDERING INFORMATION: B 4 U 1024 XXX Material Type Series Thread Size Length B-Brass 4-Tapered U-Ultrasonic

ULTRASONIC / HEAT BRASS INSERT SERIES

Ultrasonic Installation Method – The most common method for installing brass inserts in plastic. Ultrasonic installation provides fast, positive anchoring. An insert is placed in a molded or drilled hole. An ultrasonic horn contacts the insert and delivers ultrasonic vibrations, which travel through the insert. Frictional heat is immediately developed

and causes the plastic to mold itself to the knurls, permanently locking the insert in place.

.123

.123

.123

.123

.159

.159

.206

.206

.234

.234

.277

.277

.277

.277

.363

.363

.363

.363

.448

.448

.540

.540

.118

.107

.118

.107

.153

.141

.199

.185

.226

.208

.267

.246

.267

.246

.349

.321

.349

.321

.431

.401

.523

.488

Heat Staking Installation Method – Inserts may be preheated then pressed into the plastic part or piloted into a cored or drilled hole in the plastic part and then heated by conduction. Heated inserts provide a stress free assembly.


4

• For use in tapered holes• Taper allows for accurate alignment and rapid installation• Installed ultrasonically or with heat







•

For use in tapered holes

•

Taper allows for rapid and accurate alignment prior to installation


Hole Size


H ±0.13

D ±0.010

A ±0.03

B ±0.03

Minimum Depth

Minimum Boss Diameter

M2.5X0.45 ISO B4U-2545-3.4 3.99 4.37 3.4 4.17 8.74 M2.5X0.45 ISO B4U-2545-5.6 3.71 4.37 5.6 6.37 8.74 M3X0.5 ISO B4U-350-3.8 3.99 4.37 3.8 4.57 11.13 M3X0.5 ISO B4U-350-6.4 3.79 4.37 6.4 7.17 11.13 M3.5X0.6 ISO B4U-3560-3.8 5.16 5.56 3.8 4.57 11.13 M3.5X0.6 ISO B4U-3560-6.4 4.83 5.56 6.4 7.17 11.13 M4X0.7 ISO B4U-470-4.7 5.84 6.35 4.7 5.47 12.70 M4X0.7 ISO B4U-470-7.9 5.41 6.35 7.9 6.18 12.70 M5X0.8 ISO B4U-580-6.7 6.91 7.54 6.7 7.47 16.66 M5X0.8 ISO B4U-580-11.1 6.38 7.54 11.1 11.87 16.66 M6X1 ISO B4U-610-7.6 8.99 9.52 7.6 8.37 23.83 M6X1 ISO B4U-610-12.7 8.43 9.52 12.7 13.47 23.83 M8X1.25 ISO B4U-8125-8.5 11.15 11.91 8.5 9.27 28.60 M8X1.25 ISO B4U-8125-14.3 10.31 11.91 14.3 15.07 28.60

ORDERING INFORMATION: B 4 U 1024 XXX Material Type Series Thread Size Length B-Brass 4-Tapered U-Ultrasonic

ULTRASONIC / HEAT BRASS INSERT SERIES

Ultrasonic Installation Method – The most common method for installing brass inserts in plastic. Ultrasonic installation provides fast, positive anchoring. An insert is placed in a molded or drilled hole. An ultrasonic horn contacts the insert and delivers ultrasonic vibrations, which travel through the insert. Frictional heat is immediately developed

and causes the plastic to mold itself to the knurls, permanently locking the insert in place.

3.893.585.054.705.054.705.745.287.707.068.868.1510.9510.19

4.044.045.235.235.235.235.945.948.008.009.229.2211.3811.38


Heat Staking Installation Method – Inserts may be preheated then pressed into the plastic part or piloted into a cored or drilled hole in the plastic part and then heated by conduction. Heated inserts provide a stress free assembly.

5

• For use in tapered holes• Taper allows for accurate alignment and rapid installation• Installed ultrasonically or with heat






Minor Diameter Thread Size Part Number

M Nom.

C ±0.005

E ±0.005

B Nom.

D Nom. Minimum Maximum

#2-56 UNC B1M-0256-125 0.156 0.141 0.125 0.03 0.03 .068 .074 #4-40 UNC B1M-0440-188 0.188 0.171 0.188 0.03 0.03 .086 .094 #6-32 UNC B1M-0632-219 0.219 0.202 0.219 0.03 0.06 .105 .114 #8-32 UNC B1M-0832-250 0.250 0.225 0.250 0.05 0.06 .131 .139 #10-24 UNC B1M-1024-281 0.281 0.259 0.281 0.05 0.06 .146 .156 #10-32 UNC B1M-1032-281 0.281 0.259 0.281 0.05 0.06 .157 .164

-20 UNC B1M-2520-375 0.344 0.320 0.375 0.06 0.09 .197 .207 -28 UNF B1M-2528-375 0.344 0.320 0.375 0.06 0.09 .212 .220

5/16-18 UNC B1M-3118-469 0.437 0.404 0.469 0.08 0.09 .260 .265 3/8-16 UNC B1M-3716-562 0.500 0.465 0.562 0.09 0.09 .315 .321


Minor Diameter Thread Size Part Number

M Nom.

C ±0.13

E ±0.13

B Nom.

D Nom. Minimum Maximum

M2X0.4 ISO B1M-240-3.8 3.96 3.58 3.18 0.76 0.76 1.58 1.67 M3X0.5 ISO B1M-350-4.78 4.78 4.34 4.78 0.76 0.76 2.47 2.59 M4X0.7 ISO B1M-470-6.35 6.35 5.74 6.35 1.17 1.57 3.25 3.42 M5X0.8 ISO B1M-580-7.14 7.14 6.58 7.14 1.17 1.57 4.15 4.33 M6X1 ISO B1M-610-9.53 8.74 8.15 9.53 1.57 2.39 4.94 5.16 M8X1.25 ISO B1M-8125-11.91 11.10 10.24 11.91 1.98 2.39 6.65 6.65

ORDERING INFORMATION:

B

1

M

1032

XXX

Material

Type

Series

Thread Size

Length

B-Brass

1-No Flange

M-Molded-In

6

• Molded in place into plastics

Sherex recommends Molded-In Installation method for this series, see page 11 of the catalog for more information on this method.


B1M BRASS INSeRT SeRIeS


-


Thread Size Part Number H ±0.004


D ±0.005

Hole Depth Minimum

#2-56 UNC B1P-0256-156 0.135 0.125 0.156 0.191 #4-40 UNC B1P-0440-188 0.165 0.156 0.188 0.223 #6-32 UNC B1P-0632-250 0.199 0.188 0.250 0.285 #8-32 UNC B1P-0832-313 0.230 0.219 0.313 0.348 #10-24 UNC B1P-1024-375 0.261 0.250 0.375 0.410 #10-32 UNF B1P-1032-375 0.261 0.250 0.375 0.410

-20 UNC B1P-2520-500 0.325 0.313 0.500 0.535



Hole Diameter ±0.05

D ±0.13

Hole Depth Minimum

M3X0.5 ISO B1P-350-4.78 4.19 3.96 4.78 5.68 M3.5X0.6 ISO B1P-3560-6.35 5.05 4.78 6.35 7.25 M4X0.7 ISO B1P-470-7.95 5.84 5.56 7.95 8.85 M5X0.8 ISO B1P-580-9.53 6.63 6.35 9.53 10.43 M6X1 ISO B1P-610-12.7 8.26 7.95 12.70 13.60

ORDERING INFORMATION B 1 P 1032 XXXMaterial Type Series Thread Size LengthB-Brass 1-No Flange P-Press-In

7

• For use in straight holes• Mating screw expands the brass insert locking it in place• Can be installed in Thermoset or Thermoplastic materials• Press In installation eliminates the need for heat or ultrasonic

Sherex recommends Press-In Installation methods for this series, see page 11 of the catalog for more information on this method.


B1P BRASS INSeRT SeRIeS



• For straight holes

•

Easy mounting press in inserts with slotted sides



A ±0.005

S ±0.004

D ±0.005


Hole Depth Minimum

#2-56 UNC B2P-0256-136 0.135 0.188 0.020 0.136 0.125 0.171 #4-40 UNC B2P-0440-186 0.165 0.219 0.022 0.186 0.156 0.201 #6-32 UNC B2P-0632-222 0.199 0.250 0.028 0.222 0.188 0.257 #8-32 UNC B2P-0832-278 0.230 0.281 0.035 0.278 0.219 0.313 #10-24 UNC B2P-1024-332 0.261 0.313 0.043 0.332 0.250 0.367 #10-32 UNF B2P-1032-371 0.261 0.313 0.043 0.371 0.250 0.367

-20 UNC B2P-2520-450 0.325 0.375 0.050 0.450 0.313 0.485



A ±0.13

S ±0.1

D ±0.13


Hole Depth Minimum

M3X0.5 ISO B2P-350-4.22 4.19 5.56 0.56 4.22 3.96 5.12 M3.5X0.6 ISO B2P-3560-5.64 5.05 6.35 0.71 5.64 4.78 6.54 M4X0.7 ISO B2P-470-7.06 5.84 7.14 0.89 7.06 5.56 7.96 M5X0.8 ISO B2P-580-8.43 6.63 7.95 1.09 8.43 6.35 9.33 M6X1 ISO B2P-610-11.43 8.26 9.53 1.27 11.43 12.33 12.33


B

2

P

1032

XXX

Material

Type

Series

Thread Size

Length

B-Brass

2-Flange

P-Press-In

Under Flange

FLANGED BRASS PRESS-IN INSERTS

Press-In Installation Method – Can be installed in any plastic by simply pressing the insert into the hole without special installation tools. They strengthen plastic joints by providing increased pull-out, pull through, and torque resistance.


8

• For use in straight holes• Mating screw expands the brass insert locking it in place• Flange provides larger loading surface• Can be installed in Thermoset or Thermoplastic materials• Press In installation eliminates the need for heat or ultrasonic

Sherex recommends Press-In Installation methods for this series, see page 11 of the catalog for more information on this method.


B2P BRASS INSeRT SeRIeS



B

1

T

470

(_) XXX

Material

Type

Series

Thread Size

Empty - No adhesive Length

B-Brass

1-No Flange

T-Tapping A-Adhesive


UNIFIED THREAD Class 2B per ANSI/ASME B1.1Dimensions in inches

Minimum Maximum

#8-32 UNC B1T-0832-315 0.276 0.315 0.378 0.130 0.139 *0.262#10-32 UNF B1T-1032-394 0.315 0.394 0.473 0.156 0.164 *0.3011/4-20 UNC B1T-2520-551 0.394 0.551 0.661 0.196 0.207 *0.37

5/16-18 UNC B1T-3118-591 0.472 0.591 0.709 0.252 0.265 *0.448*Recommended hole size for thermoset materials only. Please contact Sherex for thermoplastic applications.

Minor DiameterHole DepthMinimum

D±0.005

ØH±0.004

Part NumberThread SizeRecommended Hole Size for

Thermoset Material±.002

Minimum Maximum

M4X0.7 ISO B1T-470-8.0 7.00 8.00 9.60 3.25 3.42 *6.65M5X0.8 ISO B1T-580-10.0 8.00 10.00 12.00 4.14 4.33 *7.65M6X1 ISO B1T-610-14.0 10.00 14.00 16.80 4.92 5.15 *9.4M8x1.25 ISO B1T-8125-15.0 12.00 15.00 18.00 6.65 6.91 *11.4

*Recommended hole size for thermoset materials only. Please contact Sherex for thermoplastic applications.

Minor DiameterThread Size Part Number

ØH±0.1

D±0.1

Hole DepthMinimum

Recommended Hole Size for Thermoset Material

±0.05

9

Adhesives can be applied to prevent loosening. Contact Sherex for additional information.

• Designed for SMC, Thermoset, and other brittle plastics• No flange allows for flush installations• Installed with a tap wrench or drill press with tapping head

Sherex recommends Self-Tapping Installation method for this series, see page 11 of the catalog for more information on this method.



B1T BRASS INSeRT SeRIeS

Minimum Maximum

#8-32 UNC B2T-0832-315 0.276 0.394 0.039 0.315 0.378 0.130 0.139 *0.262#10-32 UNF B2T-1032-394 0.315 0.433 0.047 0.394 0.473 0.156 0.164 *0.3011/4-20 UNC B2T-2520-551 0.394 0.512 0.055 0.551 0.661 0.196 0.207 *0.370

5/16-18 UNC B2T-3118-591 0.472 0.591 0.055 0.591 0.709 0.252 0.265 *0.448*Recommended hole size for thermoset materials only. Please contact Sherex for thermoplastic applications.


ØH±0.004

ØA±0.005

S±0.004

D±0.005

Hole DepthMinimum


±.002

UNIFIED THREAD Class 2B per ANSI/ASME B1.1Dimensions in inches

Minimum Maximum

M4X0.7 ISO B2T-470-8.0 7.00 10.00 1.00 8.00 9.60 3.25 3.42 *6.65M5X0.8 ISO B2T-580-10.0 8.00 11.00 1.20 10.00 12.00 4.14 4.33 *7.65M6X1 ISO B2T-610-14.0 10.00 13.00 1.40 14.00 16.80 4.92 5.15 *9.40M8x1.25 ISO B2T-8125-15.0 12.00 15.00 1.40 15.00 18.00 6.65 6.91 *11.40

*Recommended hole size for thermoset materials only. Please contact Sherex for thermoplastic applications.


ØH±0.1

ØA±0.1

S±0.1

D±0.1

Hole DepthMinimum


±0.05

METRIC THREAD 6H ISO MetricDimensions in millimeters


B

1

T

470

(_) XXX

Material

Type

Series

Thread Size

Empty - No adhesive Length

B-Brass

2-Flange

T-Tapping A-Adhesive

10

• Designed for SMC, Thermoset, and other brittle plastics• Flange provides larger bearing surface• Installed with a tap wrench or drill press with tapping head

Adhesives can be applied to prevent loosening. Contact Sherex for additional information.

Sherex recommends Self-Tapping Installation method for this series, see page 11 of the catalog for more information on this method.


B2T BRASS INSeRT SeRIeS


Design Parameters

When designing an application that will require a threaded attachment point in plastic material, the following design guidelines can be used as resources in choosing the proper insert for the specifications you require. It is still important that proper testing be performed to validate the fastened joint but these suggestions can get you started in the right direction. When designing an application the following information will be important in choosing the proper insert:

1) Type of plastic to be used2) Type and % of fillers to be used3) Flexural modulus of the plastic4) Joint strength requirements for failure mode assessment5) Operating environment of the unit in the field6) Estimated production volume

Insert Installation

Inserts are installed using the following methods:

Heat: Insert is heated prior to installation in to the plastic boss or during the installation process by a heat insert staking machine. This installation method is suitable for larger sized inserts and provides excellent flow of plastic into the insert surface profile. Installation method is designed for use with thermoplastics and NOT for thermoset plastics. This method is good for medium and high volume production runs. Perfect for applications requiring multipoint and multilevel installation of inserts. An advantages of this installation method include different size inserts can be installed with no limitations and it eliminates concern of noise levels, tool wear, and complex fixtures. Heat typically yields a 10-15% higher “torque out” and “pull out” values than any other method.

Ultrasonic: Insert is placed in plastic boss and an ultrasonic horn is positioned on top of the insert. Vibrations from the horn generate heat at the interface of the insert and the plastic; causing the plastic to flow into the surface profile of the insert. The method is designed for use with thermoplastics and NOT for thermoset plastics. This method is perfect for applications that require single plain installation. Given the inherent nature of the installation process, consideration must be given to noise levels and appropriate part fixture prior to installation. Ultrasonic installation can induce high hoop stress on the boss and potentially cause cracking or splitting; which is not always apparent at the time of installation.

Mold in: Mold in method of installation involves placing the insert in the mold die during the plastic molding process. This method can reduce final installed costs as it replaces secondary placement of the insert. However, mold cycle time will increase. Mold in method may not be possible for some applications.

Press In: This method involves using a press to push the insert into the boss hole. This method is reserved for the B1P and B2P styles. Installation is quick and easy and the pressure of the insert expansion into the plastic also adds a prevailing torque feature to the insert which is helpful in applications involving vibration. Applications involving materials with high flexural modulus must be tested to ensure plastic does not crack during installation or in cyclic testing.

Thread in: This method is reserved for the B1T and B2T insert styles. A tool will thread the inserts in to the boss hole and the slots on the body will cut a thread in to the plastic. This method is good for thermosets and other rigid plastics. An adhesive can be added to the outside thread to bond the insert in to the plastic further improving insert retention within the base material.

TechNIcAl gUIDe

11400 Riverwalk Pkwy, Suite 600 • Tonawanda, NY 14150 • Phone: 716-875-0315 • Fax: 716-875-0358

Toll Free: 866-4-SHEREX • www.sherex.com

elements of Boss Design

1) Holes should always be deeper than the total length of the insert. For thread cutting inserts the hole depth should be at least 1.2 times the length of the insert.

2) Boss diameter should be 2-3 times the diameter of the insert.

3) Hole diameter can dramatically affect the performance of the insert. Smaller holes can increase performance only up to the point where increased installation force induces cracking. Larger holes can greatly reduce performance of the insert as reduced filling of the surface profile of the insert decreases engagement. Use of fillers in the plastic material may require an increase of hole size. Testing of multiple hole sizes is recommended to achieve optimum insert performance. 4) When molding the hole the draft angle of the core pin is important to insert performance. It is recommended to use a draft angle of 1 degree to ensure proper insert engagement. Larger draft angles will reduce the engagement of the insert and plastic and could cause cracking if the hole diameter inside the hole falls below the recommended hole size. If using the B4U series, use an 8 degree draft angle as this style is designed for angled holes. All core pins should be designed to account for plastic shrinkage after the molding process. Use only tapered inserts with tapered holes.

5) For Thread-In Series product, hole size will be determined by the type of thermoset or thermoplastic material. Consult the product dimension chart and Sherex for recommended hole sizes. For hand-installation, a pilot at the top of the hole will aid in centering the insert. With a fixtured/automated installation, a lead-in chamfer will be sufficient.

Use of a Flange head Insert

1) Flange head inserts should be used in high load applications with the screw entering from the opposite end of the insert. This places the load of the joint at a 90 degree angle to the plastic and reduces the potential for cracking. Should the attached component also be made of plastic, a compression limiter is recommended to ensure the clamp load is maintained within the joint. Please contact Sherex regarding the proper compression limiter for your application.

2) Flange of the insert can act as ground for applications requiring this feature.



APPlIcATION INFORMATION

Attaching plastic furniture components

Attaching plastic piping and other variousplastic components that are used in the assembly of agriculture equipment and in the hydraulics industry.

Attaching plastic dashboards, panels, and manifolds onto engines in the automotive industry.

Compression limiters are used to maintain clamp load through the metal joint.

BRASS INSeRTS ARe USeD FOR...



Sherex Fastening Solutions, LLC400 Riverwalk Pkwy, Suite 600

Tonawanda, NY 14150

Phone: (716) 875-0315Toll Free: (866) 474-3739E-mail: [email protected]

brass inserts - sherexfasteners.sherex.com/asset/2009 brass insert catalog.pdfb-brass 1-no flange...

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