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Gallery of Grade Markings for Steel Bolts and Screws
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Physical Properties |
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Specifications |
Material |
Bolt and Screw Size (in.) |
Proof Load |
Tensile Strength Min. (psi) |
| SAE - Grade 0 | Steel | Up to 1-1/2" |
- | - |
| SAE - Grade 1 | Low Carbon Steel | Up to 1-1/2" |
- | 55,000 |
| ASTM - A 307 | Low Carbon Steel | All Sizes | - | 55,000 |
| SAE - Grade 2 | Low Carbon Steel | Up to 1-1/2" |
55,000 | 69,000 |
| Over 1/2" to 3/4" | 52,000 | 64,000 | ||
| Over 3/4" to 1-1/2" |
28,000 | 55,000 | ||
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Load (psi) |
Tensile Strength Min. (psi) |
| SAE - Grade 3 | Medium Carbon Steel, Cold Worked | Up to 1/2" | 85,000 | 110,000 |
| Over 3/4" to 5/8" | ||||
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Load (psi) |
Tensile Strength Min. (psi) |
| SAE - Grade 5 | Medium Carbon Steel, Quenched & Tempered | Up to 3/4" | 85,000 | 110,000 |
| Over 3/4" to 1" | 78,000 | 115,000 | ||
| Over 1" to 1-1/2" |
74,000 | 105,000 | ||
| Up to 3/4" | 85,000 | 120,000 | ||
| Over 1" to 1-1/2" |
74,000 | 105,000 | ||
| Over 1" to 3" | 55,000 | 90,000 | ||
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Load (psi) |
Tensile Strength Min. (psi) |
| ASTM - A 325 | Medium Carbon Steel, Quenched & Tempered | 1/2",5/8",3/4" | 85,000 | 120,000 |
| 7/8",1" | 78,000 | 115,000 | ||
| 1-1/8" to 1-1/2" |
74,000 | 105,000 | ||
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Load (psi) |
Tensile Strength Min. (psi) |
| SAE - Grade 5.1 | Low or Medium Carbon Steel, Quenched & Tempered Screw with Assembled Lock Washer | Up to 3/8" incl. | 85,000 | 120,000 |
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Physical Properties |
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| Specifications | Material | Bolt and Screw Size (in.) | Proof Lead (psi) |
Tensile Strength Min. (psi) |
| ASTM - A 354 Grade BB | Low Alloy Steel, Steel, Quenched and Tempered | Up to 2-1/2" | 80,000 | 105,000 |
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Over 2-1/2" |
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Lead (psi) |
Tensile Strength Min. (psi) |
| ASTM - A 354 Grade BC | Low Alloy Steel, Steel, Quenched and Tempered | Up to 2-1/2" | 105,000 | 125,000 |
| Over 2-1/2" to 4" |
95,000 | 115,000 | ||
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Lead (psi) |
Tensile Strength Min. (psi) |
| SAE-Grade 7 | Medium Carbon Alloy Steel , Quenched & Tempered, Roll Threaded after heat treatment | Up to 1/2" | 105,000 | 133,000 |
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Lead (psi) |
Tensile Strength Min. (psi) |
| SAE - Grade 8 | Medium Carbon Alloy Steel, Quenched & Tempered | Up to 1/2" | 120,000 | 150,000 |
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Physical Properties | |||
| Specifications | Material | Bolt and Screw Size (in.) | Proof Lead (psi) |
Tensile Strength Min. (psi) |
| ASTM A 490 | High Strength Structural Bolts, Alloy Steel | 1/2" to 2-1/2" | 120,000 | 150,000 |
| Over 2-1/2" to 4" |
105,000 | 140,000 | ||
From: Hudson Fasteners, Inc.
Detailed information and images of products, please visit the site http://www.hudsonfasteners.com
Edit by Jason
Article Summary
Brief introduction and gallery of grade markings for steel bolts and screws.
Keywords
Grade Markings Steel Bolts Screws
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Brief introduction and gallery of grade markings for steel bolts and screws.
Keywords
Grade Markings Steel Bolts Screws
Sponsored Links
Relative Company
Relative Product