Steel Bolts - SAE Grades
SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength.
SAE Grade | Head Marking | Size Range (in) | Minimum Proof Strength (103 psi) | Minimum Tensile Strength (103 psi) | Material |
---|---|---|---|---|---|
1 | 1/4 - 1 1/2 | Low - medium carbon steel | |||
2 | 1/4 - 3/4 7/8 - 1 1/2 |
55 33 |
74 60 |
Low - medium carbon steel | |
5 | 1/4 - 1 1 1/8 - 1 1/2 |
85 74 |
120 105 |
Medium carbon steel, Q & T | |
5.2 | 1/4 - 1 | 85 | 120 | Low carbon martensite steel, Q & T | |
7 | 1/4 - 1 1/2 | 105 | 133 | Medium carbon alloy steel, Q & T | |
8 | 1/4 - 1 1/2 | 120 | 150 | Medium carbon alloy steel, Q & T | |
8.2 | 1/4 - 1 | 120 | 150 | Low carbon martensite steel, Q & T |
- 1 psi (lb/in2) = 6,894.8 Pa (N/m2)
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