aspen hex bolt head markings

1 Tel.: 1-800-479-0056 Fax: MarkDescriptionRangeLoadStrengthStrength (in.)(psi)Min (psi)Min (psi)SAE J429 Low or MediumGrade 1 Carbon SteelASTM A307 Bolts,NoGrades A&BScrews,GradeStuds1/4 thruMarkSAE J429 Low or Medium3/4 Over55,00057,00074,000 Grade 2 Carbon Steel3/4 to 1-1/233,00036,00060,000 SAE J429 StudsMedium Carbon1/4 thru 1-1/2--100,000115,000 NoGrade 4 Cold Drawn SteelGradeMarkASTM A193 AISI 50180,000100,000 Grade B5 B51/4 Thru 4--ASTM A193 Bolts,AISI 41085,000110,000 Grade B6 Screws B6 Studs for High-Temperature105,000125,000 ASTM A193 ServiceAISI 4140, 4142, 1/4 thru 2-1/295,000115,000 Grade B7OR 4105 Over 2-1/275,000100,000B7thru 4--Over 4 105,000125.

2 000 ASTM A193 CrMoVa Alloythru 795,000115,000 Grade B16 Steel85,000100,000B16 ASTM A193 AISI 3041/4 and--30,00075,000 Grade B8largerB8 MECHANICAL PROPERTIES FOR STEEL HEX BOLTS ASTM, SAE AND ISO GRADE HEAD markings AND60,0001/4 thru 1-1/2 Low Carbon Steel1/4 thru 433,00036,000----NominalIdentificationSp ecificationFastenerMaterialSizeProofYiel dTensileGrade MarkDescriptionRangeLoadStrengthStrength (in.)(psi)Min (psi)Min (psi)ASTM A193 Grade B8 CAISI 347B8 CBolts,ASTM A193 ScrewsAISI 316 Grade B8 MStuds for High-B8 MTemperatureServiceASTM A193 AISI 3211/4 and--30,00075,000 Grade B8 TlargerB8 TASTM A193 AISI 304 Grade B8 Strain Hardened100,000125,000B880,000115,00065, 000105,000 ASTM A193 AISI 3471/4 thr 3/450,000100,000 Grade B8 CStrain HardenedOver 3/4--B8 CBolts,thru 1--Screws,Over 195,000110,000 ASTM A193 Studs for High-AISI 316thru 1-1/4--80,000100,000 Grade B8 MTemperatureStrain Over 1-1/4--65,00095,000B8 MServiceHardenedthru 1-1/250,00090,000100,000125,000 ASTM A193 AISI 32180,000115,000 Grade B8 TStrain 65,000105.

3 000B8 THardened50,000100,000 ASTM A320 AISI 4140,Grade L74142 or 4145L7 Bolts, Screws,ASTM A320 Studs for Low-AISI 4037 Grade L7 ATemperatureL7 AService1/4 thru 2---1/2 ASTM A320 Grade L7 BAISI 4137105,000125,000L7B ASTM A320 AISI 8740 Grade LC7L7 CASTM A320 AISI 43401/4 thru 4 Grade L43L43 NominalIdentificationSpecificationFasten erMaterialSizeProofYieldTensileGrade MarkDescriptionRangeLoadStrengthStrength (in.)(psi)Min (psi)Min (psi)ASTM A320 AISI 3041/4 and--30,00075,000 Grade B8largerB8 ASTM A320 AISI 3471/4 and--30,00075,000 Grade B8 ClargerB8 CASTM A320 AISI 3211/4 and--30,00075,000 Grade B8 TlargerB8 TASTM A320 AISI 303 Grade B8 For 303 SeB8 FBolts, Screws,Studs for Low-ASTM A320 TemperatureAISI 316 Grade B8 MServiceB8 MASTM A320 AISI 304 Grade B8B8 ASTM A320 AISI 347 Grade B8C1/4 thruB8C3/4 Over 3/4--100,000100,000 ASTM A320 AISI 303thru 1--80,00080,000 Grade B8 For 303 SeOver 1--65,00065,000B8 Fthru 1-1/4--50,00050,000 Over 1-1/4 ASTM A320thru 1-1/2 Grade B8 MAISI 316B8 MASTM A320 AISI 321 Grade B8TB8 TSAE J4291/4 thru 185.

4 00092,000120,000 Grade 5 Over 1 to74,00081,000105,000 Bolts,Medium Carbon1-1/2 Screws,Steel, Quenched1/4 thru 1 Studsand TemperedOver 1 to85,00092,000120,000 ASTM A4491-1/274,00081,000105,000 Over 1-1/255,00058,00090,000thru 3 NominalIdentificationSpecificationFasten erMaterialSizeProofYieldTensileGrade MarkDescriptionRangeLoadStrengthStrength (in.)(psi)Min (psi)Min (psi)Low or MediumSAE J429 SemsCarbon Steel,No. 685,000--120,000 Grade andthru 3/8 TemperedBolts,Low CarbonSAE J429 Screws,Martensitic Steel,1/4 thru 185,00092,000120,000 Grade and TemperedMedium CarbonASTM A325 Steel, Quenched1/2 thru 185,00092,000120,000 Type 1and Tempered1-1/8 thru74,00081,000105,000A3251-1/2 Low CarbonASTM A325 High Strength Martensitic Steel,1/2 thru 185,00092,000120,000 Type 2 StructuralQuenched and A325 BoltsTemperedAtmosphericASTM A325 Corrosion1/2 thru 185,00092,000120,000 Type 3 Resisting Steel,1-1/8 thru74,00081,000105,000A325 Quenched and1-1/2 TemperedASTM A35480,00083,000105,000 Grade BBAlloy Steel,1/4 thru 2-75.

5 00078,000100,000 BBBolts,Quenched and1/2 StudsTempered2-3/4 thru 4 105,000109,000125,000 ASTM A35495,00099,000115,000 BCGrade BC SAE J429 Bolts,1/4 thru 1-Grade 7 ScrewsMedium Carbon1/2105,000115,000133,000 Alloy Steel,Quenched andSAE J429 TemperedGrade 8 Bolts,1/4 thru 1-120,000130,000150,000 Screws,1/2 StudsAlloy Steel,ASTM A354 Quenched andGrade BDTemperedMedium CarbonSAE J429 Alloy or SAE 10411/4 thru 1-No GradeGrade Elevated1/2120,000130,000150,000 MarkTemperatureDrawn SteelNominalIdentificationSpecificationF astenerMaterialSizeProofYieldTensileGrad e MarkDescriptionRangeLoadStrengthStrength (in.)

6 (psi)Min (psi)Min (psi)150,000 High StrengthAlloy Steel,minASTM A490 StructuralQuenched and1/2 thru 1-120,000130,000170,000 BoltsTempered1/2maxA490 ISO R898 Class ,00036,00060,000No GradeMarkBolts,Medium CarbonAll SizesScrews,Steel, Quenchedthru 1-1/2 Studsand TemperedISO R89855,00057,00074,000 Class No R898orClass ,00092,000120,000 Alloy Steel,88 Quenched R898120,000130,000150,000orClass