S-94135A821 10-32 x 1/2" Tamper-Resistant Drilled Spanner Stainless Steel Truss Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration, reducing failure risks in critical assemblies.
• Precision Class 2A thread fit with 10-32 UNF fine threading for secure, smooth engagement and minimized cross-threading in tight-tolerance applications.
• Wide truss head design provides enhanced load distribution and surface contact, preventing surface damage and improving clamping force.
• Drilled spanner drive allows for secure tool engagement and high-torque installation, suitable for confined spaces and tamper-resistant needs.
• Full threading along the 1/2" length offers versatile fastening depth and consistent grip across the entire shank for uniform stress distribution.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and material transparency for global industrial supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 10-32 UNF stainless steel rounded truss head screws address common challenges like corrosion-induced degradation and assembly instability. The 18-8 stainless steel material combined with a passivated finish significantly enhances resistance to moisture, chemicals, and oxidation, making them ideal for outdoor equipment, marine hardware, and food processing machinery. The fine UNF threading and Class 2A fit ensure precise alignment and vibration resistance in electronics enclosures, automotive components, and precision instruments. The wide truss head distributes clamping force effectively, reducing the risk of material fatigue on softer substrates. With a drilled spanner drive, these screws facilitate secure installation in high-torque applications while supporting tamper-resistant requirements, delivering reliability in aerospace, manufacturing, and maintenance operations.

Specification Summary & Compliance

This screw features a 10-32 UNF thread size with Class 2A thread fit for consistent dimensional accuracy and interchangeability. Manufacturing adheres to standard inch system measurements, including a 1/2" length and fully threaded design. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to hazardous substance restrictions and environmental safety protocols for industrial use.