S-94115A534 1/4"-20 x 5/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Secure anti-loosening performance with durable nylon 6/6 tip that maintains grip under vibration and thermal cycling from -50° to 250°F
• Precise thread engagement through Class 3A fit UNC coarse threads ensuring reliable fastening in high-vibration industrial applications
• Superior corrosion resistance with black-oxide coating on alloy steel construction for extended service life in demanding environments
• Optimized installation torque via 1/8" hex drive design providing secure tool engagement without head protrusion
• Consistent mechanical performance backed by Rockwell C28 hardness rating for reliable strength and deformation resistance
• Broad industrial compatibility with right-hand thread direction and 1/4"-20 thread size meeting common equipment specifications
• Environmental compliance assurance through RoHS 3 and REACH compliance for global manufacturing applications

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical vibration resistance in mechanical assemblies where space constraints demand headless fastening solutions. The green nylon 6/6 tip creates consistent locking force without damaging shaft surfaces, while the UNC Class 3A thread fit ensures precise engagement in industrial equipment, automation systems, and power transmission components. Engineered for temperature-resistant performance (-50° to 250°F), the hex drive set screw maintains reliability in environments experiencing thermal expansion and contraction cycles. The coarse thread spacing provides rapid installation in production environments, reducing assembly time while meeting ASME B18.3 standards for dimensional consistency across batches.

Specification Summary & Compliance

This 1/4"-20 UNC set screw maintains Class 3A thread tolerances for precision fit in industrial applications. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental regulations for hazardous substance restrictions. The alloy steel construction with Rockwell C28 hardness ensures consistent performance across production runs while the black-oxide surface treatment provides corrosion protection in various operating environments.