, SAE AND ISO BOLTING MATERIAL Grade Yield SAE J429Grade 1 A307Grades A&B SAE J429Grade 2 Low or Low Carbon Low or 33,000 4 3/4 Over 3/4 to 55,000 33,000 57,000 36,000 60,000 60,000 SAE J429Grade 4 Carbon Cold Drawn B5 AISI 501 B5 4 B6 B6 AISI 410 110,000 B7 B7 AISI 4140, 4142, OR 4105 2-1/2 Over 2-1/2 thru 4 75,000 B16 B16 CrMoVa Alloy Over 4 thru 7 AISI 304 AISI 347 1/4 and larger 30,000 75,000 AISI 316 for High- AISI 321 1/4 and larger 30,000 75,000
, SAE AND ISO BOLTING MATERIAL Grade Yield for High- AISI 304Strain AISI 347Strain AISI 316Strain 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-65,000 50,000 65,000 50,000 110,000 90,000 AISI 321Strain 65,000 50,000 L7 L7 AISI 4140,4142 or 4145 L7A L7A AISI 4037 2-1/2 L7B L7B AISI 4137 L7C L43 LC7 L43 Bolts,Screws, for Low- AISI 8740 AISI 4340 4 AISI 304 AISI 347 1/4 and larger 30,000 75,000 AISI 321 Page 2
, SAE AND ISO BOLTING MATERIAL Grade Yield A320 Grade F A320 Grade F 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-1/4 and larger 30,000 75,000 A320 Grade F A320 Grade A320 Grade A320 Grade F Bolts,Screws, for Low- AISI 304 AISI 347 AISI 303or 303Se 3/4 Over 3/4 thru 1 Over 1 thru 1-1/4 Over 1-65,00 50,00 65,00 50,00 A320 Grade AISI 316 A320 Grade AISI 321 Grade 5 A449, 1Over 1 to 1Over 1 to Over thru 3 55,000 58,000 90,000 Grade 5.1 Sems Low or, No. 6 thru 3/8 Grade 5.2 Low Carbon Martensitic 1 Page 3
, SAE AND ISO BOLTING MATERIAL Grade Yield A325 A325 Type 1, 1/2 thru 11-1/8 thru A325 A325 Type 2 High Structural Bolts Low Carbon Martensitic 1/2 thru 1 A325 A325 Type 3 Atmospheric Corrosion Resisting 1/2 thru 11-1/8 thru A354 Grade BB A354 Grade BC Bolts, Alloy 2-1/22-3/4 thru 4 75,000 83,000 78,000 109,000 99,000 Grade 7 Bolts, Screws Carbon Alloy 4 133,000 Grade 8 A354 Grade BD Carbon Alloy 130,000 150,000 Alloy 4 Grade 8.1 or SAE 1041 Modifi ed Elevated Drawn 130,000 150,000 A490 A490 High Structural Bolts Alloy 1/2 thru 130,000 150,000 min 170,000 max Class 4.6, All Sizes thru 33,000 36,000 60,000 Page 4
, SAE AND ISO BOLTING MATERIAL Grade Yield Class 5.8, 55,000 57,000 8.8 or Class 8.8 All Sizes thru 88 Alloy 10.9 or Class 10.9 130,000 150,000 109 NOTES: 1. Specifi cations: A193 Alloy- Bolding s for High- A307 Low- Externally and Internally Threaded Standard s A320 Alloy- Bolding s for Low- A325 High- Bolds for Structural Joints, Including Suitable Nuts and Plain Washers A354 Alloy Bolts and with Suitable Nuts A449 Bolts and A490 Alloy Bolts for Structural Joints 2. SAE Specifi cation: J429 Mechanical and Quality Requirements for Externally Threaded s 3. ISO Recommendations: No. R898 of s Part 1 Bolts, Screws and 4. Grade 7 bolds and screws are roll threaded after heat treatment. Page 5
, SAE AND ISO BOLTING MATERIAL Grade ing Stress (ksi) Hardness Rockwell Min Max See Note No A563 Grade 0 A563 Grade A A563 - Grade B 1 120 Over 1 thru 69 B55 90 B68 105 B69 C32 3, 4 A563 Grade C May Be 4 144 B78 C38 5 A563 Grade C3 Atmospheric Corrosion Resistant May be 4 144 B78 C38 5, 9 A563 Grade D Maybe 4 150 4 C38 6 A563 Grade DH 4 175 C24 C38 6 A563 Grade DH3 Atmospheric Corrosion Resistant May be 4 175 C24 C38 5, 9 A194 Grade 1 4 130 B70 -- 7 A194 Grade 2 4 150 159 352 7, 8 A194 Grade 2H 4 175 C24 C38 7 Page 6
, SAE AND ISO BOLTING MATERIAL Grade ing Stress (ksi) Hardness Rockwell Min Max See Note A194 Grade 2HM 4 150 159 237 7, 8 A194 Grade 4 4 175 C24 C38 7 A194 Grade 7 4 175 C24 C38 7 A194 Grade 7M 4 150 159 237 7 NOTES: 1. In addition to the indicated grade marking, all grades, except A563 grades O, A and B, must be marked for manufacturer identification. 2. The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts are machined 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. When marked, the identification marking shall be the grade letter O, A or B. 4. Properties shown are those of nonplated or noncoated coarse thread hex nuts. 5. Properties shown are those of coarse thread heavy hex nuts. 6. Properties shown are those of coarse thread heavy hex nuts. 7. Properties shown are those of coarse 8-pitch thread heavy hex nuts. 8. Hardnesses are Brinell Hardness Numbers. 9. The nut manufacturer, at his option, may add other markings to indicate the use of atmospheric corrosion resistant steel. 10. s: A563 Carbon and Alloy Nuts. A194/A194M Carbon and Alloy Nuts for Bolts for High Pressure and High. Page 7