PROTO, Industrial Tools

Phone: 800-800-TOOL

Conversion Charts

STANDARD TORQUE VALUE CHART
Fastener Type:
SAE 0-1-2
Min. Tensile Strength:
74,000 PSI
Material:
Low Carbon Steel
Fastener Type:
SAE 3
Min. Tensile Strength:
100,000 PSI
Material:
Medium Carbon Steel
Fastener Type:
SAE 5
Min. Tensile Strength:
120,000 PSI
Material:
Medium Carbon Heat
Treated Steel
Fastener Type:
SAE 6
Min. Tensile Strength:
133,000 PSI
Material:
Medium Carbon Steel Quenched Tempered
Fastener Type:
SAE 7
Min. Tensile Strength:
133,000 PSI
Material:
Medium Carbon Alloy Steel
Fastener Type:
SAE 8
Min. Tensile Strength:
160,000 PSI
Material:
Medium Carbon Alloy Steel
Fastener Type:
Socket Head Cap Screw
Min. Tensile Strength:
160,000 PSI
Material:
High Carbon
Case Hardened Steel
Fastener Type:
Socket Set Screw
Min. Tensile Strength:
212,000 PSI
Material:
High Carbon
Case Hardened Steel
Fastener Type:
Machine Screw Yellow Brass
Min. Tensile Strength:
60,000 PSI
Material:
Copper (CU) 63%
Zinc (ZN) 37%
Fastener Type:
Silicone Bronze
Fastener Type "B"
Min. Tensile Strength:
100,000 PSI
Material:
Copper (CU) 96%
Zinc (ZN) 2%
Silicon (SI) 2%
Use SAE 2,5 or 8 values when grade is known, with a nut of sufficient strength.