S-95289A058 3/8"-16 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Maximum torque transmission with 3/16" hex drive for secure installation and removal in high-stress applications
• Superior corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise thread engagement with Class 3A thread fit ensuring reliable, vibration-resistant fastening
• Enhanced locking performance through extended tip design (0.198") that digs into shafts for permanent component positioning
• Exceptional durability with Rockwell B80 hardness maintaining structural integrity under repeated use
• Industry-standard compatibility with UNC coarse threads (3/8"-16) for easy replacement and broad application use
• Regulatory peace of mind with compliance to ASME B18.3, RoHS 3, and REACH environmental standards

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this hex headless set screw solves critical positioning challenges in machinery assembly and power transmission systems. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining strength in environments exposed to moisture, chemicals, or temperature variations. The extended tip design creates positive mechanical locking by embedding into shaft materials, preventing component slippage even under extreme vibration or rotational forces. With Class 3A thread fit and UNC coarse threads, this fastener delivers precise engagement in pulleys, gears, and collars while accommodating minor misalignments common in manufacturing. The headless configuration allows for flush mounting in confined spaces where protruding fasteners would interfere with adjacent components or rotating assemblies.

Specification Summary & Compliance

This 3/8"-16 UNC set screw features precision Class 3A thread fit with right-hand thread direction and coarse thread spacing. Manufacturing specifications conform to ASME B18.3 standards for dimensional accuracy and performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Extended tip dimensions maintain tight tolerances with tip diameter of 0.25" (-0.009" to 0") and tip length of 0.198" (-0.005" to 0") for consistent locking performance across production batches.