S-94361A135 5/16"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Alloy steel construction with Rockwell C32 hardness and 140,000 psi tensile strength ensures long-lasting performance in demanding industrial environments
• Superior Corrosion Protection - Black oxide finish provides excellent resistance against rust and oxidation, extending service life in harsh conditions
• Precision Alignment - Class 3A thread fit guarantees tight tolerances and perfect mating with components, reducing assembly errors
• Secure Installation - Knurled socket head with 3/16" hex drive prevents tool slippage and ensures reliable torque transmission
• Versatile Shoulder Design - 3/8" diameter shoulder with precise tolerances provides accurate spacing and bearing surfaces for rotating components
• Fine Thread Advantage - 5/16"-24 UNF right-hand threads offer superior holding power and vibration resistance compared to coarse threads
• Regulatory Compliance - Meets RoHS 3 and REACH environmental standards for safe use across global markets

Professional Applications & Engineering Value

This alloy steel shoulder screw with black oxide finish delivers exceptional engineering value in precision assembly applications where component alignment and durability are critical. The Class 3A thread fit ensures minimal play and precise positioning in machinery, automation systems, and precision instruments. The knurled socket head with hex drive provides secure tool engagement, preventing damage during high-torque installations. The 5/16"-24 UNF fine threads maintain clamping force under vibration, making these shoulder screws ideal for rotating assemblies, bearing mounts, and linkage systems. The combination of 140,000 psi tensile strength and corrosion-resistant black oxide finish ensures reliable performance in manufacturing equipment, automotive applications, and industrial machinery where failure is not an option.

Specification Summary & Compliance

This precision shoulder screw features Class 3A thread fit with UNF thread standards, ensuring tight tolerances for critical applications. The shoulder diameter maintains -0.004" to -0.002" tolerance with shoulder length held to -0.005" to 0.005" precision. Manufactured from high-strength alloy steel with Rockwell C32 hardness, this component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets.