S-91273A117 5-40 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable performance in demanding mechanical assemblies.
- Precise Class 2A thread fit guarantees smooth installation and secure fastening in UNC coarse thread applications.
- Knurled head with 5/64" hex drive provides excellent grip and torque transmission, reducing tool slippage.
- Durable Rockwell B55 hardness maintains structural integrity under repeated use and high stress.
- RoHS 3 and REACH compliance assures environmental safety and meets global regulatory standards.
- Optimized shoulder design with precise diameter and length tolerances for accurate alignment in pivot and axle applications.
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 5-40 UNC coarse threads and Class 2A fit ensure quick, secure fastening with minimal cross-threading risk, while the knurled socket head enhances torque application in confined spaces. Its high tensile and shear strength makes it ideal for mechanical linkages, rotating shafts, and pivot points in machinery, where consistent performance and resistance to corrosion are paramount. By integrating a standardized shoulder diameter and length, it provides reliable positioning in bushings and bearings, reducing wear and maintenance costs in industrial equipment.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy. The shoulder features a diameter of 1/8" (tolerance: -0.004" to -0.002") and length of 5/8" (tolerance: -0.005" to 0.005"), ensuring consistent assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and high-quality industrial applications.
