Core Fastener Dimensions
- Thread Size: 1/4"-20 (UNC Coarse Thread)
- Fastener Length: 1-3/4 inches (1.75")
- Drive Type / Size: Hex Socket (Hex Key size required is 3/16 inch)
- Head Type: Standard Cylindrical
- Head Diameter: Approximately 0.375 inches
- Head Height: Approximately 0.250 inches (matches the 1/4" shank diameter) [1, 2, 3, 4]
Material & Mechanical Properties
- Material: High-strength Alloy Steel
- Finish: Black Oxide (thermal chemical treatment providing basic corrosion protection and oil retention)
- Strength Grade: Grade 8 equivalent / ASTM A574 compliance standards
- Minimum Tensile Strength: 170,000 psi
- Hardness Rating: Rockwell C38 to C43
- Thread Direction: Right Hand
- Thread Class: 3A fit [1, 2, 3]