S-94779A520 8-32 x 1/4" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh environments and reducing maintenance costs.
• Exceptional holding power from 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable fastening under stress.
• Wide, low-profile truss head distributes clamping force over a larger area, minimizing surface damage and providing a secure fit.
• Easy installation and removal with a No. 2 Phillips drive and fully threaded UNC coarse spacing, speeding up assembly processes.
• Precise thread fit with Class 2A tolerance and right-hand threading, offering consistent performance and reducing cross-threading risks.
• Compliance with major standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance in global markets.
• Durable surface finish that resists wear and extends service life in industrial applications.

Professional Applications & Engineering Value

These Black-Oxide 18-8 Stainless Steel Rounded Truss Head Phillips Screws are engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. The Black-Oxide coating on stainless steel enhances corrosion resistance, making them suitable for outdoor, marine, or chemical-exposed environments where durability is critical. The truss head design provides a larger bearing surface, which helps prevent pull-through in softer materials and ensures stable fastening in electrical enclosures, machinery panels, and automotive assemblies. With a UNC coarse thread and Phillips No. 2 drive, these screws allow for quick installation, reducing labor time and improving productivity in high-volume manufacturing settings. Their fully threaded construction and 70,000 psi tensile strength deliver consistent clamping force, minimizing the risk of joint failure and enhancing overall system reliability.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse thread spacing with a size of 8-32 and length of 1/4". It is manufactured in accordance with ASME B18.6.3 standards for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally sensitive and industrial applications worldwide.