S-94128A175 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability: Crafted from alloy steel with Rockwell C32 hardness for superior wear resistance and long-term reliability in demanding environments.
• Precise Alignment & Rotation: Features a precise shoulder fit with a 1/2" diameter and 3/8" length, ensuring accurate component location and smooth bearing surfaces.
• Superior Thread Engagement: Class 3A thread fit provides tighter tolerances for secure fastening and reduced risk of loosening under vibration.
• Robust Fastening Performance: 3/8"-16 UNC coarse thread offers excellent grip and quicker installation in a variety of materials.
• Space-Saving & Secure Drive: The headless slotted drive design allows for a low-profile installation while enabling firm tool engagement.
• Strict Compliance & Safety: Meets RoHS 3 and REACH compliance standards, ensuring environmental safety and suitability for regulated industries.
• Right-Hand Thread Convenience: Standard right-hand thread direction ensures ease of use and compatibility with common assembly practices.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address critical alignment and rotational stability challenges in industrial machinery. The alloy steel construction, combined with a Rockwell C32 hardness, provides exceptional strength to withstand high-stress applications such as pivots, guides, and stops in assemblies. The precise shoulder diameter and length with minimal tolerances ensure components like gears and pulleys are accurately positioned, reducing wear and misalignment. The headless slotted drive offers a compact solution for tight spaces while maintaining secure tool engagement. Ideal for industrial applications requiring reliable, repeatable performance, this screw's Class 3A thread fit and UNC coarse thread deliver consistent fastening in demanding environments like automotive, aerospace, and heavy equipment manufacturing.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for high precision. Dimensions include a thread diameter of 0.375", thread length of 5/8", shoulder diameter of 1/2" (tolerance: -0.001" to 0"), and shoulder length of 3/8" (tolerance: 0" to 0.005"), ensuring exacting dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental and safety standards are met for industrial use.