No Grade Mark |
SAE J429 Grade 1 |
Bolts,
Screws,
Studs
|
Low or Medium Carbon Steel |
--- |
ASTM A307 Grade A & B |
Low Carbon Steel |
--- |
SAE J429 Grade 2 |
Low or Medium Carbon Steel |
--- |
No Grade Mark |
SAE J429 Grade 4 |
Studs |
Medium Carbon
Cold Drawn Steel
|
--- |
B5 |
ASTM A193 Grade B5 |
Bolts, Screws, Studs
for High Temperature Service
Class 1:
Carbide solution treated
|
AISI 501 |
~1.7362 |
B6 |
ASTM A193 Grade B6 |
AISI 410 |
~1.4006 |
B7 |
ASTM A193 Grade B7 |
AISI 4140, 4142, 4105 |
~1.7225 |
B16 |
ASTM A193 Grade B16 |
CrMoVa Alloy Steel |
~1.7711 |
B8 |
ASTM A193 Grade B8 Class 1 |
AISI 304 |
~1.4301 |
B8C |
ASTM A193 Grade B8C Class 1 |
AISI 347 |
~1.4550 |
B8M |
ASTM A193 Grade B8M Class 1 |
AISI 316 |
~1.4401 |
B8T |
ASTM A193 Grade B8T Class 1 |
AISI 321 |
~1.4541 |
B8 |
ASTM A193 Grade B8 Class 2 |
Bolts, Screws, Studs
for High Temperature Service
Class 2:
Carbide solution
treated and strain hardend
|
AISI 304 Strain Hardend |
~1.4301 |
B8C |
ASTM A193 Grade B8C Class 2 |
AISI 347 Strain Hardend |
~1.4550 |
B8M |
ASTM A193 Grade B8M Class 2 |
AISI 316 Strain Hardend |
~1.4401 |
B8T |
ASTM A193 Grade B8T Class 2 |
AISI 321 Strain Hardend |
~1.4541 |
L7 |
ASTM A320 Grade L7 |
Bolts, Screws, Studs
for Low Temperature Service
Quenched and Tempered
|
AISI 4140, 4142, 4145 |
~1.7225 |
L7A |
ASTM A320 Grade L7A |
AISI 4037 |
--- |
L7B |
ASTM A320 Grade L7B |
AISI 4137 |
~1.7220 |
L7C |
ASTM A320 Grade L7C |
AISI 8740 |
~1.6546 |
L43 |
ASTM A320 Grade L43 |
AISI 4340 |
~1.6580 |
B8 |
ASTM A320 Grade B8 Class 1 |
Bolts, Screws, Studs
for Low Temperature Service
Class 1:
Carbide solution treated
|
AISI 304 |
~1.4301 |
B8C |
ASTM A320 Grade B8 Class 1 |
AISI 347 |
~1.4550 |
B8T |
ASTM A320 Grade B8 Class 1 |
AISI 321 |
~1.4541 |
B8F |
ASTM A320 Grade B8 Class 1 |
AISI 303 (Se) |
~1.4305 |
B8M |
ASTM A320 Grade B8 Class 1 |
AISI 316 |
~1.4401 |
B8 |
ASTM A320 Grade B8 Class 1 |
Bolts, Screws, Studs
for Low Temperature Service
Class 2:
Carbide solution
treated and strain hardend
|
AISI 304 |
~1.4301 |
B8C |
ASTM A320 Grade B8C Class 2 |
AISI 347 |
~1.4550 |
B8T |
ASTM A320 Grade B8T Class 2 |
AISI 321 |
~1.4541 |
B8F |
ASTM A320 Grade B8F Class 2 |
AISI 303 (Se) |
~1.4305 |
B8M |
ASTM A320 Grade B8M Class 2 |
AISI 316 |
~1.4401 |
3 Radial Lines 120° |
SAE J429 Grade 5 |
Bolts, Screws, Studs |
Medium Carbon Steel
Quenched and Tempered
|
--- |
ASTM A449 |
--- |
3 Radial Lines 90° |
SAE J429 Grade 5.1 |
Bolts, Screws, Studs |
Low or Medium Carbon Steel
Quenched and Tempered
|
--- |
3 Radial Lines 60° |
SAE J429 Grade 5.2 |
Bolts, Screws, Studs |
Low Carbon Martensitic Steel
Quenched and Tempered
|
--- |
A325 |
ASTM A325 Type 1 |
High Strength Structural Bolts |
Medium Carbon Steel
Quenched and Tempered
|
--- |
-- |
ASTM A325 Type 2
(Withdrawn)
|
Low Carbon Martensitic Steel
Quenched and Tempered
|
--- |
A325 |
ASTM A325 Type 3 |
Atmospheric Corrosion Resisting Steel
Quenched and Tempered
|
--- |
BD |
ASTM A354 Grade BD |
Bolts, Studs |
Alloy Steel
Quenched and Tempered
|
--- |
BC |
ASTM A354 Grade BC |
--- |
5 Radial Lines |
SAE J429 Grade 7 |
Bolts, Screws |
Medium Carbon Alloy Steel
Quenched and Tempered
|
--- |
6 Radial Lines 60° |
SAE J429 Grade 8 |
Bolts, Screws, Studs |
Medium Carbon Alloy Steel
Quenched and Tempered
|
--- |
No Grade Mark |
SAE J429 Grade 8.1 |
Studs |
Medium Carbon Alloy or SAE 1041 Modified Elevated Temperature Drawn Steel |
--- |
A490 |
ASTM A490 |
High Strength Structural Bolts |
Alloy Steel Quenched and Tempered |
~1.0050 |
A453/A453M |
ASTM A453/A453M Grade 660 |
Class A / Class B / Class C / Class D |
--- |
--- |
ASTM A453/A453M Grade 651 |
Class A / Class B |
--- |
--- |
ASTM A453/A453M Grade 662 |
Class A / Class B |
--- |
--- |
ASTM A453/A453M Grade 665 |
Class A / Class B |
--- |
--- |
ASTM A453/A453M Grade 668 |
Class A / Class B |
--- |
--- |