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SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength
|SAE Grade||Head Marking||Size Range|
|Minimum Proof Strength|
|Minimum Tensile Strength|
|1 || ||1/4 - 1 1/2 || || ||Low - medium carbon steel |
|2 || ||1/4 - 3/4 |
7/8 - 1 1/2
|Low - medium carbon steel |
|5 || ||1/4 - 1 |
1 1/8 - 1 1/2
|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)
- en: sae grades steel bolts
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- Engineering ToolBox, (2008). Steel Bolts - SAE Grades . [online] Available at: https://www.engineeringtoolbox.com/steel-bolts-sae-grades-d_1426.html [Accessed Day Mo. Year].
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