Socket Head Shoulder Screw, 1/2 inch x 3 1/4 inch, Heat Treated Alloy Steel, Black Oxide, 3/8-16 Thread Size (Quantity: 100 pcs), Shoulder Diameter: 1/2 inch, Shoulder Length: 3.25

Shoulder: Shoulder refers to the enlarged portion of the screw, the diameter of which serves as the basis for derivation of nominal size. Length: The length of the shoulder screw shall be measured, parallel to the axis of the screw, from the plane of the bearing surface under the head to the plane of the shoulder at the threaded end.

• Manufactured to: ASME B18.3, ASTM F835, IFI 124 Specifications and Standards
• Shoulder Diameter: 1/2" x Shoulder Length: 3 1/4"
• Thread Size: 3/8-16
• Nominal Hexagon Socket (allen wrench) size: 1/4 (Inch)
• Black Oxide is not a protective finish and will rust if exposed to moisture. Stainless Steel material is recommended for environments with moisture