ASTM, SAE AND ISO BOLTING MATERIAL

1 ASTM, SAE AND ISO BOLTING MATERIALI dentifi cationGrade MarkSpecifi cationFastenerDescriptionMaterialNominal SizeRange (in.) mechanical PropertiesProof Load (psi)Yield Strength Min (psi)Tensile Strength Min (psi)No Grade MarkSAE J429 Grade 1 Bolts, Screws, StudsLow orMedium Carbon Steel1/4 thru1-1/233,00060,000 ASTM A307 Grades A&BLow CarbonSteel1/4 thru 4 SAE J429 Grade 2 Low orMedium Carbon Steel1/4 thru3/4 Over 3/4 to 1-1/255,00033,00057,00036,00074,00060,00 0No Grade MarkSAE J429 Grade 4 StudsMediumCarbon Cold Drawn Steel1/4 thru1-1/2 100,000115,000B5 ASTM A193 Grade B5 AISI 5011/4 thru 4 80,000100,000B6 ASTM A193 Grade B6 AISI 410 85,000110,000B7 ASTM A193 Grade B7 AISI 4140, 4142, OR 41051/4 thru 2-1/2 Over 2-1/2 thru 4 Over 4 thru 7 105,00095,00075,000125,000115,000100,000 B16 ASTM A193 Grade B16 CrMoVaAlloy Steel 105,00095,00085,000125,000115,000100,000 B8 ASTM A193 Grade B8 AISI 3041/4 and larger 30,00075,000B8 CASTM A193 Grade B8 CAISI 347 B8 MASTM A193 Grade B8 MAISI 316 B8 TASTM A193 Grade B8 TBolts, Screws.

2 Studs for High-Temperature ServiceAISI 3211/4 and larger 30,00075,000 Page 2 Identifi cationGrade MarkSpecifi cationFastenerDescriptionMaterialNominal SizeRange (in.) mechanical PropertiesProof Load (psi)Yield Strength Min (psi)Tensile Strength Min (psi)B8 ASTM A193 Grade B8 Bolts, Screws,Studs for High-Temperature ServiceAISI 304 Strain Hardened1/4 thru 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-1/4 thru 1-1/2 100,00080,00065,00050,000125,000115,0001 05,000100,000B8 CASTM A193 Grade B8 CAISI 347 Strain Hardened B8 MASTM A193 Grade B8 MAISI 316 Strain Hardened 95,00080,00065,00050,000110,000100,00095 ,00090,000B8 TASTM A193 Grade B8 TAISI 321 Strain Hardened 100,00080,00065,00050,000125,000115,0001 05,000100,000L7 ASTM A320 Grade L7 Bolts,Screws,Studs for Low-Temperature ServiceAISI 4140,4142 or 41451/4 thru 2-1/2 105,000125,000L7 AASTM A320 Grade L7 AAISI 4037 L7 BASTM A320 Grade L7 BAISI 4137 L7 CASTM A320 Grade LC7 AISI 8740 L43 ASTM A320 Grade L43 AISI 43401/4 thru 4 B8 ASTM A320 Grade B8 AISI 3041/4 and larger 30,00075.

3 000B8 CASTM A320 Grade B8 CAISI 347 B8 TASTM A320 Grade B8 TAISI 321 ASTM, SAE AND ISO BOLTING MATERIALPage 3 Identifi cationGrade MarkSpecifi cationFastenerDescriptionMaterialNominal SizeRange (in.) mechanical PropertiesProof Load (psi)Yield Strength Min (psi)Tensile Strength Min (psi)B8 TASTM A320 Grade B8 TBolts,Screws,Studs for Low-Temperature Service1/4 thru 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-1/4 thru 1-1/21/4 and larger 30,00075,000B8 FASTM A320 Grade B8F B8 MASTM A320 Grade B8M B8 ASTM A320 Grade B8 AISI 3041/4 thru 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-1/4 thru 1-1/2 100,00080,00065,0050,00100,00080,00065,0 050,00B8 CASTM A320 Grade B8 CAISI 347 B8 FASTM A320 Grade B8 FAISI 303or 303Se B8 MASTM A320 Grade B8 MAISI 316 B8 TASTM A320 Grade B8 TAISI 321 SAE J429 Grade 5 Bolts, Screws, StudsMedium Carbon Steel, Quenched and Tempered1/4 thru 1 Over 1 to 1-1/285,00074,00092,00081,000120,000105, 0001/4 thru 1 Over 1 to 1-1/2 Over 1-1/2 thru 385,00074,000 55,00092,00081,000 58,000120,000105,000 90,000 ASTM A449 SAE J429 Grade orMedium Carbon Steel, Quenched and TemperedNo.

4 6 thru 3/885,000 120,000 SAE J429 Grade , Screws, StudsLow CarbonMartensitic Steel, Quenched and Tempered1/4 thru 185,00092,000120,000 ASTM, SAE AND ISO BOLTING MATERIALPage 4 Identifi cationGrade MarkSpecifi cationFastenerDescriptionMaterialNominal SizeRange (in.) mechanical PropertiesProof Load (psi)Yield Strength Min (psi)Tensile Strength Min (psi)A325 ASTM A325 Type 1 High Strength Structural BoltsMediumCarbon Steel, Quenched and Tempered1/2 thru 11-1/8 thru 1-1/285,00074,00092,00081,000120,000105, 000A325 ASTM A325 Type 2 Low CarbonMartensitic Steel, Quenched and Tempered1/2 thru 185,00092,000120,000A325 ASTM A325 Type 3 AtmosphericCorrosion Resisting Steel, Quenched and Tempered1/2 thru 11-1/8 thru 1-1/285,00074,00092,00081,000120,000105, 000 ASTM A354 Grade BBBolts, StudsAlloy Steel, Quenched and Tempered1/4 thru 2-1/22-3/4 thru 480,00075,00083,00078,000105,000100,000 ASTM A354 Grade BC105,00095,000109,00099,000125,000115,0 00 SAE J429 Grade 7 Bolts, ScrewsMediumCarbon Alloy Steel, Quenched and Tempered41/4 thru1-1/2105,000115,000133,000 SAE J429 Grade 8 Bolts, Screws, StudsMediumCarbon Alloy Steel, Quenched and Tempered1/4 thru 1-1/2120,000130,000150,000 ASTM A354 Grade BDAlloySteel.

5 Quenched and Tempered4No GradeMarkSAE J429 Grade Alloy or SAE 1041 Modifi ed Elevated TemperatureDrawn Steel1/4 thru1-1/2120,000130,000150,000A490 ASTM A490 HighStrength Structural BoltsAlloySteel, Quenched and Tempered1/2 thru1-1/2120,000130,000150,000 min 170,000 maxNo GradeMarkISO R898 Class , Screws, StudsMedium Carbon Steel, Quenched and TemperedAll Sizes thru 1-1/233,00036,00060,000 ASTM, SAE AND ISO BOLTING MATERIALPage 5 Identifi cationGrade MarkSpecifi cationFastenerDescriptionMaterialNominal SizeRange (in.) mechanical PropertiesProof Load (psi)Yield Strength Min (psi)Tensile Strength Min (psi)No GradeMarkISO R898 Class , Screws, StudsMedium Carbon Steel, Quenched and TemperedAll Sizes thru 1-1/255,00057,00074, R898 Class Steel, Quenched and Tempered85,00092,000120, R898 Class ,000130,000150,000 NOTES:1. ASTM Specifi cations:A193 Alloy-Steel Bolding Materials for High-Temperature ServiceA307 Low-Carbon Steel externally and Internally threaded Standard FastenersA320 Alloy-Steel Bolding Materials for Low-Temperature ServiceA325 High-Strength Bolds for Structural Steel Joints, Including Suitable Nuts and Plain Hardened WashersA354 Quenched and Tempered Alloy Steel Bolts and Studs with Suitable NutsA449 Quenched and Tempered Steel Bolts and StudsA490 Quenched and Tempered Alloy Bolts for Structural Steel Joints2.

6 SAE Specifi cation:J429 mechanical and Quality Requirements for externally threaded Fasteners3. ISO Recommendations:No. R898 mechanical properties of FastenersPart 1 Bolts, Screws and Studs4. Grade 7 bolds and screws are roll threaded after heat , SAE AND ISO BOLTING MATERIALPage 6 Grade Identifi cation MarkingSpecifi cationMaterialNominal SizeRange (in.)Proof LoadStress (ksi)Hardness RockwellSee NoteMinMaxNo MarkASTM A563 Grade 0 Carbon Steel1/4 thru1-1/269B55C323, 4 ASTM A563 Grade A90B68 ASTM A563 - Grade B1/4 thru 1120B69 Over 1thru 1-1/2105 ASTM A563 Grade CCarbon Steel May Be Quenched and Tampered1/4 thru 4144B78C385 ASTM A563 Grade C3 Atmospheric Corrosion Resistant Steel May be Quenched and Tampered1/4 thru 4144B78C385, 9 ASTM A563 Grade DCarbon Steel Maybe Quenched and Tampered1/4 thru 4150B84C386 ASTM A563 Grade DHCarbon Steel Quenched and Tampered1/4 thru 4175C24C386 ASTM A563 Grade DH3 Atmospheric Corrosion Resistant Steel May be Quenched and Tampered1/4 thru 4175C24C385, 9 ASTM A194 Grade 1 Carbon Steel1/4 thru 4130B70--7 ASTM A194 Grade 2 Medium Carbon Steel1/4 thru 41501593527, 8 ASTM A194 Grade 2 HMedium Carbon Steel Quenched and Tampered1/4 thru 4175C24C387 ASTM.

7 SAE AND ISO BOLTING MATERIALPage 7 Grade Identifi cation MarkingSpecifi cationMaterialNominal SizeRange (in.)Proof LoadStress (ksi)Hardness RockwellSee NoteMinMaxASTM A194 Grade 2 HMMedium Carbon Steel Quenched and Tampered1/4 thru 41501592377, 8 ASTM A194 Grade 4 Medium Carbon Alloy Steel Quenched and Tampered1/4 thru 4175C24C387 ASTM A194 Grade 7 Medium Carbon Alloy Steel Quenched and Tampered1/4 thru 4175C24C387 ASTM A194 Grade 7 MMedium Carbon Alloy Steel Quenched and Tampered1/4 thru 41501592377 NOTES:1. In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked formanufacturer The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts aremachined from bar stock the nut must be additionally marked with the letter B. 3. Nuts are not required to be marked unless specified by the purchaser.

8 When marked, the identification markingshall be the grade letter O, A or properties shown are those of nonplated or noncoated coarse thread hex properties shown are those of coarse thread heavy hex properties shown are those of coarse thread heavy hex properties shown are those of coarse 8-pitch thread heavy hex Hardnesses are Brinell Hardness The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosionresistant Specifications:ASTM A563 Carbon and Alloy Steel A194/A194M Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature , SAE AND ISO BOLTING MATERIAL