S-94792A335 4-40 x 1/2" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction and passivated finish
• Enhanced load distribution and vibration resistance from the wide, rounded truss head design
• High tensile strength of 100,000 psi ensures reliable, long-term fastening integrity under stress
• Easy installation and removal with the Phillips No. 1 drive, reducing tool slippage and assembly time
• Precise thread engagement with Class 2A fit and coarse UNC threads for quick, secure fastening
• Full threading along the 1/2" length provides maximum grip and adjustment flexibility
• Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH for safe, regulated use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 316 stainless steel rounded truss head screws excel in environments where corrosion and mechanical stress are concerns. The passivated finish enhances durability against chemicals and moisture, making them ideal for marine, chemical processing, and outdoor equipment. The wide truss head distributes clamping force effectively, reducing surface damage and maintaining seal integrity in assembled components. With coarse UNC threads and a Class 2A thread fit, they offer quick installation and reliable performance in high-vibration settings, ensuring reduced maintenance and downtime in machinery and structural fastening.

Specification Summary & Compliance

This screw adheres to ASME B18.6.3 specifications, with precise Class 2A thread fit and UNC coarse threading for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory adherence. Dimensions include a 1/2" length with full threading, 4-40 thread size, and a Rockwell B100 hardness, supporting tensile strength up to 100,000 psi for reliable industrial use.