with neo-epdm self-drilling self- tapping screws · self-drilling screws,type bsd sae j78-1998...
TRANSCRIPT
45
Self- Tapping ScrewsSelf-Drilling
SELF-DRILLING SCREWS, TYPE BSD SAE J78-1998
Nominal Sizeor Basic
ScrewDiameter
ThreadsPer Inch
T t P Minimum Practical Nominal ScrewLengths, Formed Points
Minimum TorsionalStrength, lb.- in.
(STEEL SCREWSONLY)
Major Diameter Minor Diameter Protrusion Allowance
Max Min Max Min #2 Pt. #3 Pt. 90° Head,#2 Pt
Csk Head,#2 Pt
90° Head,#3 Pt
Csk Head,#3 Pt
8 .1640 18 .166 .161 .122 .116 .211 .251 3/8 7/16 7/16 1/2 42
10 .1900 16 .189 .183 .141 .135 .235 .300 7/16 1/2 1/2 9/16 61
12 .2160 14 .215 .209 .164 .157 .283 .353 1/2 5/8 1/2 5/8 92
1/4 .2500 14 .246 .240 .192 .185 .318 .393 1/2 5/8 1/2 5/8 150
P
T t
G
CE
S
N
With Neo-EPDMWashers
NOTE: There is no single standard for Neo-EPDM washers. These values are offered as a guide; deviations from these specifications may occur.
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01 705. 194. 212. 691. 930. 320. 521. 390.
21 855. 245. 342. 722. 930. 320. 521. 390.
4/1ro41 716. 106. 572. 952. 930. 320. 521. 390.
61/5 057. 027. 543. 513. 040. 230. 611. 680.
8/3 057. 027. 944. 914. 040. 230. 011. 080.
COARSE THREAD SELF DRILLING SCREWS - 5/16 & 3/8 DIAMETERS, #3 POINT
Nominal Size or BasicScrew Diameter
ThreadsPer Inch
T t A B
Major Diameter Minor Diameter Drill Point Length Drill Point Diameter
Max Min Max Min Max Min Max Min
5/16 .3125 12 .315 .307 .272 .263 .421 .361 .270 .265
3/8 .3750 12 .380 .370 .308 .298 .354 .314 .338 .330
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