1

COMPRESSION LIMITERS

π x ( Ø22 - Ø1

2 )

ØAØC

ØB

L

2

SPIROL’s 5 Step Process for Success

When you engage SPIROL as part of your team, we will utilize our 5 Step Process for Success to ensure that you receive an accurate solution in a timely manner:

1. Weworkwith you to define your product performanceandassemblyobjectives.This includesgathering sample components and the drawings of the individual components as well as the assembly.Thisstageiscrucialtoensuringthatweareallonthesamepageandwillultimatelyresultinanaccuratesolutionthefirsttime!

2. Afterwe gather your performance and assembly objectives,wewill conduct a comprehensiveengineering evaluation. We have a group of Applications Engineers who are dedicated to assisting youindeterminingthebestsolutionforyourparticularapplication.

3. Weprovideyouwithaformaltechnicalproposalandprototypesforevaluationinyourassembly.Theproposalwilldetailotherproductsthatweconsideredforyourapplication,andwhyultimatelythe part that we ended up recommending is the optimum solution.

4. Ifinstallationequipmentisinvolved,wecanalsodesignafixturetoholdandalignthecomponentsduringinstallation.Thisisacriticalelementtotheoverallsuccessoftheinstallationasyouhavetoensurethatallofthecomponentsarealigned.Webuild,test,installandcertifythemachine–including educating the operators and maintenance personnel.

5. Weareanactiveparticipantofyourteamstartinginthedesignstage–throughthequalificationstage–until theproduct is launchedsuccessfully toensure thatyourquality,performanceandassemblyobjectivesarecompletelysatisfied.

SPIROL’sApplicationEngineers have vast experience inCompressionLimiter design, productiontechniques,andinstallationmethodstomaximizethebenefitswithintheassembly.Thisknowledge,obtainedbothfromtheoryandpracticalexperience,istestedandexpandeduponcontinuouslythroughactualapplications.Thebreadthofourproductofferingcombinedwiththisengineeringexpertiseisour strength.

Each application has unique considerations such as:• ThespecificplastictypeinwhichtheCompressionLimiterwillbeused• Columnarstrengthrequirements• Corrosionresistancerequirements• Temperaturerequirements• Installationmethod

EventhoughthiscatalogoffersusefulinformationregardingdesignguidelinesandspecificationsforCompressionLimiters, it is imperativethattheproperCompressionLimiterbeimplementedandtheplastichostbedesignedappropriatelyforeachparticularapplicationtoensurethatboltedjointintegrityis maintained throughout the life of the product.

Startingwithyourdesignandprojectobjectives,ourApplicationEngineerswilldeterminetheoptimumCompressionLimiterfortheapplication.Considerationisgiventocomponentdesign,assemblycosts,andmanufacturingobjectives.

WhileSPIROLoffersthebroadeststandardrangeofCompressionLimitersinourindustry,thereareuniquesituationswhichmightrequireacustomizedspecialparttomeettheexactrequirementsoftheapplication. In these cases, SPIROL leverages our standard product offering including raw material, productiontechniquesandtoolingtoofferyouthemostcompetitivesolutionpossible.

OPTIMAL APPLICATION ENGINEERING

Contact SPIROL for design assistance:www.spirol.com/s/cmpldesign/

1

THE FUNCTION OF A COMPRESSION LIMITER

Compression Limiters are designed to protect the plastic components of an assembly from the compressive loads generated by the tightening of bolts, thereby assuring continued integrity of the bolted connection.

Inpractice,astheboltistightenedtheplasticcompressesandthestressin the plastic increases until the headof the bolt, orwasher if one isused,comesintocontactwiththeCompressionLimiter.Thereafter,theCompressionLimiterandplasticwill compressat thesame rate. TheCompressionLimiterwillabsorbadditionalclampingloadswithoutfurthersignificantcompressionandincreasedstressintheplasticmaterial.

Aproperlydesignedboltedjointmustmeetthefollowingcriteria:•Theheadofthebolt,orwasherifoneisused,shouldalwaysseatagainst theCompressionLimiterunder load. Thiswillpreventdeteriorationoftheboltedjointresultingfromdiminishedclampingload due to plastic creep.

•The proof load of theCompression Limiter should be equaltoorgreater than theproof loadof thebolt toassure that theCompressionLimiterwillnotyieldpriortotheboltunderexcessiveclamping loads.

• ThematingcomponentthattheCompressionLimiterseatsagainstshouldbestrongenoughtowithstandthelocalizedcompressivestressesgeneratedbytheclampingforce.

•The clearance between themaximumbolt diameter and theminimum installed inside diameter of the Compression Limiter shouldbesufficienttocompensatefornormalmisalignment.

Standard SPIROL® COMPRESSION LIMITERS meet these criteria.

TheclearancebetweentheboltandtheinsidediameteroftheinstalledCompressionLimitersisadequatetomeetnormalmisalignment.Thelengthandlengthtoleranceisapplicationdependent.Thestandardtoleranceissufficienttomeetmostneeds,butverificationisrecommended.SPIROLEngineeringisavailabletoassistinthisprocess.Ifitisdeterminedthataspecial Compression Limiter is required, a documented recommendation willbeprovided.

The range of SPIROL’s Compression Limiters includes the split seam, molded-in and solid knurled & grooved designs. Since each series of Compression Limiter is designed to meet specified proof loads and installation methods, the dimensional specifications are different:

• Split Seam: Produced from high carbon steel for maximumcompression strength, these roll-formed Compression Limiters are intendedforpost-moldinstallation.Thespringforcegeneratedduringinstallationprovidesself-retentionintheassembly.

•Molded-in:Produced from lowcarbonsteeland includesanaxialseamtopreventrotationaswellasradialgroovestoprovideaxialretention in the molded part.

• Solid Knurled:Theselimitersareproducedstandardfromaluminumand utilize knurls for retention. Alternatively, a grooved variation is available for improvedretention inmold inapplications.Theseareideal for thin parts requiring the use of Compression Limiters.

2

DESIGN CONSIDERATIONS

Recommended LoadingTheintegrityofaboltedjointrequiresthatallofthecomponentsintheloadpathbecapableofsustainingforindefiniteperiods,underallenvironmentalconditions,thefasteningloadinitiallyapplied.Todothis,allcomponentsmustbedesignedforaspecificstress,andthefastenerbeingusedmustbetightenedtoanappropriatelevelsoasnottoexceedtheyieldpoint(elasticlimit)ofanyofthecomponents.ThereasonthatmetalCompressionLimitersarerequiredisbecauseplastic always exhibits stress and strain relaxation under evenmodest loads.Whendeterminingbolted joint characteristics, thefollowingconsiderationsshouldbeevaluated:

• Whattypeofloadisreallyrequired?Forexample,doesagivenplasticflangereallyneedaClass12.9capscrewtoholditinplace?

• Whatarethestrengthsofthecomponentsinthejoint?

• WhatwilltheCompressionLimiterbeseatedagainst?Ifitisaluminumorplastic,thenthatmaybethelimitingfeature.

• IstheboltbeingthreadedintoanInsert?Ifso,isthereadequatethread strength and contact area on the Insert to fully support theCompressionLimiter?

• What torque should the bolt be tightened to? SPIROLrecommendsthattheboltloadbe25%to75%ofproofload.Lessthan25%andyourisknotgeneratingenoughfrictionalretentionwithin the threads. More than75%and there isachanceduetoassemblyvariationsthatproofloadoftheboltmaybeexceeded.

• Howdoestorquerelatetoboltload?Torqueandactualclampingload are very dependant onmaterials and conditions. Thetheoretical formulaprovidedonpage9 isonly forreference.Actual torqueappliedmust be determined by the end userand is dependant on a variety of factors such as materials and coatingsofallthecomponentsinthejointaswellasthemethodof applying the torque.

Recommended Tightening TorqueTheintegrityoftheboltedjointrequiresthatnoneofthecomponents,including the bolt, be stressed beyond the elastic limit. Werecommendaclampingloadequalto75%oftheproofloadofthebolt.Therecommendedtorquevaluestoproducethisclampingloadareprovidedonpages8and9.

Determination of Compression Limiter LengthProperlengthspecificationsofboththeCompressionLimiterandthe plastic component are crucial to the proper performance of the boltedjoint.TherecommendedmaximumlengthoftheCompressionLimiter is theminimum thicknessof theplastic component.Thisassuresthatwhentheproperloadisappliedtothebolttwocriticalconditionswillbemet:

• The bolt will be in contact with theCompression Limiter,eliminatingthepossibilityofcreep.

• Theplastichostwillalwayshaveasmallamountofcompressionapplied.

Theamountofcompressionontheplastichostwillbeatmostthecombinedthicknessandlengthtolerancesofthetwocomponentsand the amount of compressive deflection on theCompressionLimiter. In reality, with good SPC and production controls, the actual compressionwillbemuchless.

Allowable Compression of the Plastic ComponentFormostcommonlyusedmoldedplastics,itisdifficulttodetermineaspecificmaximumamountthattheycanbecompressedinashortperiodof time.Thereare toomanyvariables involvedtomakeaspecificcalculation.Suchfeaturesasthespecificplastic,filler,molddesign, wall thickness, and stress concentrations all impact the durabilityoftheplastic.Asageneralguideline,2%-3%compressionofthermoplasticmaterialsisreasonable.Overashortperiodoftimetheplasticwillusuallyexhibitstressrelaxation,therebyalleviatingthe compressive load on the plastic and allowing the Compression Limitertomaintainjointintegrity.Statedinformula (1)below:

(1) dP = Tmax - Lmin + dC

Where dPshouldtypicallybelessthan3%ofTmax Where: dP = Requireddeflectionoftheplasticcomponent,in units of length.Tmax= Maximumthicknessoftheplasticcomponent,in units of length.Lmin = Minimum length of the Compression Limiter, in units of length.dC = DeflectionoftheCompressionLimiterunderload, in units of length.

Deflection of theCompression Limiter under bolt load can becalculated using formula (2)below:

(2) dC =

Where: dC = DeflectionoftheCompressionLimiterunderload, in units of length.FB = Compressiveforcegeneratedbytheboltor fastener, in units of force.LC = Nominal length of the Compression Limiter, in units of length.AC = Cross sectional area of the Compression Limiter, in units of area.EC = ModulusofElasticity(Young’sModulus)ofthe material of the Compression Limiter, in units of force per area. See Table 1.

FB x LC

AC x EC

psi30,000,00010,000,000

MaterialCarbonSteelAluminum

MPa 206,000 69,000

Table 1 - Modulus of Elasticity for Common Materials

3

Table 2 - Deflection Factor C at Proof Load

ThevaluesfortheDeflectionFactorClistedinTable 2 are used tosimplyestimatetheactualmaximumdeflectionaCompressionLimiterwillexhibitwhenfullyloadedtothespecifiedfastener’sproofload. Formula (3) uses C and the nominal length of the Compression Limitertocalculatedeflection.

(3) dC = C x LC

For deflections at loads other than proof, the results areproportional to the loading.

Force to Seat the Bolt on the Compression LimiterItisimportanttoalwaysassurethattheboltisseatedhardagainstthe Compression Limiter. While proportionally plastic is much more compressiblethantheCompressionLimiter,intheinitialassembledstate the plasticwill be nominally thicker than the length of theCompressionLimiter.Withtheuseofflangedboltsorlargewashers,significantsurfaceareaoftheplasticcanbeputundercompression,generatinghighloads.Therefore, it isnecessarytocalculatethecapabilityofthebolttocompresstheplasticandseatagainsttheCompression Limiter in the worst case scenario. Formula (4) shows howtocalculatetheforcerequiredtoseatthebolt.

(4) FB =

Where AP =

Where: FB = Compressiveforcegeneratedbytheboltor fastener, in units of force.Tmax= Maximumthicknessoftheplasticcomponent,in units of length.Lmin = Minimum length of the Compression Limiter, in units of length.EP = ModulusofElasticity(Young’sModulus)ofthe plastic component, in units of force per area.AP = Areaoftheplasticcomponentbeingplacedin compressionbythebolt,inunitsofarea.Ø1 = Minimum hole diameter of the plastic component, in units of length.Ø2 = Maximumdiameteroftheportionoftheboltor washerthatwillbeincontactwiththeplastic, in units of length.

TheresultantFBshouldbeintherangeof50%orlessoftheproofloadoftheselectedbolt,therebyassuringthatsufficientcompressionis applied to the Compression Limiter after the plastic stress has relaxed.

Hole DesignAlthoughthesplitseamCompressionLimitershaveabrokenedge,thisiskepttoaminimuminordertomaintainthemaximumbearingsurface area. Accordingly, it is recommended that a radius bemolded as a lead-in to the hole in the plastic component to facilitate insertion.ThisradiusisnotnecessaryforsolidCompressionLimitersas the pilot is smaller than the hole. When a draft angle is required, the hole should taper within the recommended hole size for the length of the Compression Limiter.

π x ( Ø22 - Ø1

2 )4

( Tmax - Lmin ) x EP x AP

Tmax

Mating Component MaterialTheclampingloadoftheboltistransferredtothematingcomponentthroughtheCompressionLimiter.Itmustbeevaluatedwhetherthematerial of the mating component is strong enough to withstand the clamping forceof thebolt. Thestress impartedonto thematingcomponentcanbecalculatedbydividingtheclampingloadappliedto theCompression Limiter by the cross sectional area of theCompressionLimiter.If thisstressexceedstheyieldstrengthofthe mating component material, localized permanent deformation may occur, resulting in a loss in clamping load.

Deflection Factor CBolt ClassCompression Limiter Series0.00200.00330.00220.00100.0051

Class 5.8Class12.9Class10.9Class 5.8Class 8.8

CL200CL250CL350CL500

CL600 / CL610

Selecting the Most Cost-Effective Compression LimiterEach standard series of Compression Limiters will affect the overall costoftheassemblyindifferentways.SPIROLEngineeringwillassist in the determination of which type of Compression Limiter is bestsuitedtomeettheperformanceandinstallationrequirementsthatresultsinthelowesttotalcostoftheassembly.

Cost-Effective Fastener SelectionDesignersshouldbeprudentaboutnotchoosingaboltclassthatistoo strong for the application and ensuring that the proper tightening torqueisappliedduringtheassemblyprocess.Ahigherboltclassrequires a stronger Compression Limiter and potentially stronger matingmaterial. Each adds to the total cost of the assembly.Whenincreasedbearingsurfaceatthematingjunctionisrequired,Designersshouldconsiderselectingeitheraflangeheadboltorincluding a washer rather than investing in a headed Compression Limiter.Inthissituation,thereisatrade-offbetweencostandeaseofassembly.Washerscostmuchlessthantheaddedexpenseofaheaded Compression Limiter. In addition, non-headed Compression Limiters are easier to feed.

4

COMPRESSION LIMITERS SPECIFICATIONS

MATERIAL FINISHB HighCarbonSteel K Plain, Oiled T-T TrivalentZincPlated

SERIES CL250Heattreated(HV420to545)

SERIES CL200Not heat treated

To Order: CMPL,NominalBoltDiameter,Length,Material,Finish,SeriesExample: CMPL 10 X 8 BK CL250

SPLIT SEAM COMPRESSION LIMITERS

SPIROL® Split Seam Compression Limiters canbeinstalledwithSPIROL pin inserters, pin driving chucks, or simply pressed in.

Features and Benefits:

• Flexiblediameteraccommodates wide

hole tolerances.

• Willnotinterlockinthefree state.

•Availableforshorterlengths of larger diameter fasteners.

•Offered in heat treated and non-heat treated versions to suit various boltgrades.

DIMENSIONAL DATA

MetricMin. Ø IDInstalled Ø ODNominal

Bolt SizeRecommended

Ø Hole SizeØ14.65/15.07Ø17.45/18.00

1.852.25

Ø14.50/14.60Ø17.30/17.60

Ø10.55Ø12.55

M10M12

Wall ThicknessT

681012St

anda

rd

Leng

ths

10 12NominalDiameter ➤

• CL200ratedforusewithISOClass5.8bolts.• CL250ratedforusewithISOClass12.9bolts,butmatingsurfacemustbeadequatetowithstandloads.

• Speciallengthsandinchsizesavailableuponrequest.

L+0.00-0.25

TNOM

ØOD

BREAK EDGE

5

SPIROL®

Standard Split Seam Compression Limiters canbeinstalledwithSPIROL pin inserters, pin driving chucks, or simply pressed in.

To Order: CMPL,NominalBoltDiameter,Length,Material,Finish,SeriesExample: CMPL 6 X 50 BK CL350

SERIES CL350 STANDARD SPLIT SEAM

• CL350ratedforusewithISOClass10.9bolts.• Speciallengthsandinchsizesavailableupon

request.

COMPRESSION LIMITERS SPECIFICATIONS

Features and Benefits:

• Flexiblediameteraccommodates wide

hole tolerances.

• Willnotinterlockinthefree state.

• Lead-infacilitatesinsertion.

•Designed to avoid witness marks on soft

mating materials.

• Generousboltclearanceaids in positional alignment when multiple Limiters are used in an assembly.

MATERIAL FINISHB HighCarbonSteel K Plain, Oiled T-T TrivalentZincPlated

DIMENSIONAL DATA

Nominal Bolt Ø Size

Ø7.08/7.22Ø8.28/8.45

Ø10.08/10.28Ø13.25/13.52Ø16.25/16.58Ø19.30/19.69

1.01.11.52.02.53.0

RecommendedØ Hole Size

Ø6.95/7.05Ø8.15/8.25Ø9.95/10.05Ø13.05/13.20Ø16.05/16.20Ø19.10/19.25

Ø4.8Ø5.8Ø6.8Ø8.8Ø10.8Ø12.8

M4M5M6M8M10M12

Ø ODMin. Ø ID Installed

MetricWall Thickness

T

45681012141618202224253035404550

Stan

dard

Len

gths

4 5 6 10 128NominalDiameter ➤

ØOD

TNOM

L+0-LTol

Length ToleranceNominal Diameter

M4 through M8M10 through M12

L0.150.25

Tol

6

COMPRESSION LIMITERS SPECIFICATIONS

SERIES CL500

MATERIAL FINISHF LowCarbonSteel T-T TrivalentZincPlated

• CL500ratedforusewithISOClass5.8bolts.• Speciallengthsandinchsizesavailableuponrequest.

To Order: CMPL,NominalBoltSizexLength,Material,Finish,SeriesExample: CMPL6X20FTCL500

STANDARD MOLDED-IN

Features and Benefits:

• ODverticalgroovesattheseam offer an anti-rotational feature.

• Radialgroovesprovideaxialretention.

• Designedaroundstandard,industry-accepted clearances for M6 and M8 bolts.

• Amagnetcanbeusedtosecure the Limiter onto

non-vertical core pins to avoid mold damage.

SPIROL®

Standard Molded-In Compression Limiters canbemoldedinusingindustrystandard core pins.

Parts less than 20 mm long will have a single groove.

Plastic removed to show Compression

Limiter.

DIMENSIONAL DATA

Ø ID Min.NominalBolt Size

8.19.912.9

5.86.88.8

M5M6M8

T LMetric

Ø OD1.11.52.0

4 6 8 10 12 15 20 30 40 50

TNOM

ØODRef. Only

L+0-0.2

ØID MIN.

7

SPIROL®

Knurled CL600 Compression Limiters canbepressedintoplasticcomponents.

Grooved CL610 Compression Limiterscanbemoldedintoplasticcomponents.

COMPRESSION LIMITERS SPECIFICATIONS

To Order: CMPL,NominalBoltSizexLength,Material,Finish,SeriesExample: CMPL 6 X 8 AK CL600

ØBØAØC

L

ØAØB

L

MATERIAL FINISHA Aluminum K PlainFeatures and Benefits:

• Symmetrical–noorientationrequired for installation.

• Squareends–toensure100%contactwithmatingsurface.

• Knurl/Groove–provideexcellentretention.

• Pilot–standsfreelyinthe hole prior to complete installation.

• Aluminum–strong,lightweight and lead free.

Ø A Min.NominalBolt Size

5.787.328.82

10.3813.72

45679

M3M4M5M6M8

Ø B L Metric

Ø C5.507.038.55

10.0813.44

RecommendedHole±0.05

5.657.188.69

10.2313.58

3 4 5

+0.00-0.15

6 8

DIMENSIONAL DATA

SERIES CL610Grooved

SERIES CL600Knurled

ALUMINUM COMPRESSION LIMITERS

ØBØAØC

L

ØAØB

L

• CL600/CL610ratedforusewithISOClass8.8bolts.• Speciallengthsavailableuponrequest.

Brass and headed versions available upon request.

8

BOLT SPECIFICATIONS

Notes:• ProofloadsareperSAEJ429andISO898respectively.• ShadedinchsizesarenotdirectlycoveredbySAEJ429,butarecalculatedappropriately.• Clamploadisapproximately75%proofload.

Common Inch Bolts per SAE J429

Proof

Threads

510770

1,1901,4802,7004,4506,600

250375575720

1,3102,2003,200

380580895

1,1102,0253,3404,950

540820

1,2601,5752,8504,7257,000

330500770960

1,7502,9004,250

#4-40#6-32#8-32#10-241/4-205/16-183/8-16

Clamp720

1,0901,6802,1003,8006,3009,300

Grade 2 Loads (lbs.) Grade 5 Loads (lbs.) Grade 8 Loads (lbs.)

Coarse Proof Clamp Proof Clamp

Common Inch Bolts per SAE J429

Proof

Threads

560860

1,2501,7003,1004,9007,450

270410600825

1,5002,4003,600

420645940

1,2752,3253,6755,600

600910

1,3201,8003,2605,2107,900

360550800

1,1002,0003,2004,800

#4-48#6-40#8-36#10-321/4-285/16-243/8-24

Clamp790

1,2101,7602,4004,3506,950

10,500

Grade 2 Loads (lbs.) Grade 5 Loads (lbs.) Grade 8 Loads (lbs.)

Fine Proof Clamp Proof Clamp

85,000 psi120,000 psi

380 MPa580 MPa830 MPa970MPa

Standard Fastener RatedYield (Proof) Strengths

SAE Grade 5SAE Grade 8ISO Class 5.8ISO Class 8.8ISOClass10.9ISOClass12.9

Common Metric Bolts per ISO 898

ProofThreads

2,9203,9405,1008,230

11,60022,70021,20037,40035,50033,70053,40051,10048,900

1,4301,9402,5004,0505,750

11,20010,40018,40017,50016,50026,30025,10024,000

2,1902,9603,8506,1508,70017,00015,90028,10026,60025,30040,10038,30036,700

3,1404,2205,4508,850

12,55024,40022,80040,10038,10036,10057,30054,80052,500

1,9102,5803,3405,4007,64014,90013,90024,50023,30022,00035,00033,50032,000

M3M3.5M4M5M6M8 X 1M8 X 1.25M10 X 1M10 X 1.25M10 X 1.5M12 X 1.25M12 X 1.5M12X1.75

Clamp4,1805,6307,290

11,80016,70032,50030,40053,50050,80048,10076,40073,10070,000

Class 5.8 Loads (N) Class 8.8 Loads (N) Class 10.9 Loads (N)

Proof Clamp Proof Clamp Proof Clamp

Class 12.9 Loads (N)

3,6604,9406,400

10,35014,65028,50026,60047,00044,60042,20067,00064,10061,400

4,8806,5808,520

13,80019,50038,00035,50062,70059,40056,30089,30085,50081,800

9

TORQUE SPECIFICATIONS

Notes:• ShadedinchsizesarenotdirectlycoveredbySAEJ429,butarecalculatedappropriately.• Torqueforinchthreadsarein•lbs.• TorqueformetricthreadsareN•m.• Torquevaluesshownareforclampload.• Actualloadsdevelopedbyaspecifiedtorquevaluecanvaryby±25%.

Common Inch Bolts per SAE J429

Dry

Threads

8.516.029.442.2

101.0209.0371.0

4.27.8

14.120.549.0

103.0180.0

6.412.022.031.676.0157.0278.0

9.117.031.045.0107.0221.0394.0

5.610.418.927.465.5

138.0240.0

#4-40#6-32#8-32#10-241/4-205/16-183/8-16

Lube12.122.641.360.0

143.0295.0525.0

Grade 2 Torque Grade 5 Torque Grade 8 Torque

Coarse Dry Lube Dry Lube

Common Inch Bolts per SAE J429

Dry

Threads

9.417.830.848.5

116.0230.0420.0

4.58.5

14.823.556.5

113.0202.0

7.113.423.136.387.0172.0315.0

10.118.832.551.5

122.0244.0444.0

6.011.319.731.475.0

150.0270.0

#4-48#6-40#8-36#10-321/4-285/16-243/8-24

Lube13.425.143.368.5

163.0326.0593.0

Grade 2 Torque Grade 5 Torque Grade 8 Torque

Fine Dry Lube Dry Lube

T = K x D x P

Where:K = torque-frictioncoefficientD = nominalboltdiameterP = boltclampingloadKDry = 0.2KLube = 0.15

Typicaltighteningtorquevaluesto achieve recommended Clamping Loadsarebasedonthe following formula:

Common Metric Bolts per ISO 898

DryThreads

1.32.13.16.2

10.427.225.456.253.250.696.291.988.1

0.61.01.53.05.2

13.412.527.626.324.847.345.243.2

1.01.62.34.67.8

20.419.142.139.938.072.268.966.1

1.42.23.36.6

11.329.327.460.257.254.2

103.198.694.5

0.91.42.04.06.917.916.636.835.033.063.160.257.6

M3M3.5M4M5M6M8 X 1M8 X 1.25M10 X 1M10 X 1.25M10 X 1.5M12 X 1.25M12 X 1.5M12X1.75

Lube1.93.04.48.8

15.139.036.580.276.272.2137.5131.5126.0

Class 5.8 Torque Class 8.8 Torque Class 10.9 Torque

Dry Lube Dry Lube Dry Lube

Class 12.9 Torque

1.62.63.87.8

13.234.231.970.566.963.3

120.6115.4110.5

2.23.55.1

10.317.645.642.694.089.284.4

160.8153.8147.4

4

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