Guide 02 · Fastener Reference Guide
Tensile Strengths
Approximate tensile strength comparison of steel grades and classes.
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INCH Fasteners
| Pound per Inch² | (psi) |
|---|---|
| 58015 | |
| SAE Grade 2 (over 3/4") | 60000 |
| 60916 | |
| BSW Mild Steel (AS / NZS 2451) | 62000 |
| SAE Grade 2 (up to 3/4") | 74000 |
| 75420 | |
| 89923 | |
| 101526 | |
| SAE Grade 5 (over 1") | 105000 |
| 116030 | |
| 116030 | |
| SAE Grade 5 (up to 1") | 120000 |
| 120381 | |
| SAE Grade 8 | 150000 |
| 150839 | |
| 176946 | |
| Grade 9 · ASTM A574 (L9 & Plow Bolts) · A574 socket head cap screws up to 1/2″ (170 000 psi over 1/2″) | 180000 |
METRIC Fasteners
| (MPa) | Megapascals |
|---|---|
| 400 | Class 4.6 |
| 414 | |
| 420 | Class 4.8 |
| 427 | |
| 510 | |
| 520 | Class 5.8 |
| 620 | Stainless Duplex 2205 |
| 700 | Stainless Steel Class 70 |
| 724 | |
| 800 | Stainless Steel Class 80 |
| 800 | Class 8.8 (up to and including 16mm) |
| 827 | |
| 830 | Class 8.8 (over 16mm) |
| 1034 | |
| 1040 | Class 10.9 |
| 1220 | Class 12.9 |
| 1240 |