5/16″-18 X 1-1/4″ Machine Screws Truss Head Phillips Drive Steel Black Zinc (1000/Pkg.) Secure Checkout
Original price was: $304.50.$127.89Current price is: $127.89.
Engineered for strength and reliability, our Machine Screws Phil Truss Steel Black Zinc 5/16-18 x 1-1/4 delivers secure fastening in metal-to-metal assemblies. The combination of steel construction, black zinc finish, and a Phillips drive ensures durability and ease of installation across a range of projects.
Drive Type: Phillips
Head Style: Truss
Material: Steel
Finish: Black Zinc
Thread Size: 5/16-18 UNC
Length: 1-1/4″
Key benefits include a wide bearing surface for better load distribution, corrosion resistance provided by the black zinc finish, and compatibility with standard 5/16-18 UNC tapped holes. Ideal for equipment enclosures, chassis assemblies, furniture frames, and other metal-to-metal applications where a secure, long-lasting fastening is required.




