Steel Bolts - SAE Grades

SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength.

• Steel Bolts - ASTM Grades
• Steel Bolts - Metric Grades
  

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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