S-91054A495 1/4"-20 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 and TiCN coating, ideal for harsh industrial environments
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting fastening
- Precise alignment and positioning thanks to the 5/8" shoulder with tight diameter and length tolerances for stable component mounting
- Easy installation and removal using a standard 5/32" hex drive, reducing assembly time and tooling requirements
- Consistent thread engagement with Class 2A fit and 1/4"-20 UNC coarse thread, minimizing cross-threading risks
- Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
- Durable surface protection from TiCN coating that enhances wear resistance and extends service life
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and durability challenges in industrial applications such as machinery assemblies, pivoting mechanisms, and precision instruments. The 18-8 stainless steel base material provides excellent resistance to oxidation and chemical exposure, while the TiCN coating significantly reduces friction and wear during dynamic operations. The 5/8" shoulder length and precise diameter tolerances ensure components are securely spaced and aligned, preventing misalignment and reducing stress concentrations. With a coarse UNC thread and Class 2A fit, it offers quick assembly and reliable holding power, making it a top choice for B2B procurement in automotive, aerospace, and manufacturing sectors where repeatability and compliance are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder features a diameter of 5/16" (tolerance: -0.002" to 0") and length of 5/8" (tolerance: 0" to 0.003") to ensure precise fitment. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and suitability for global industrial markets.
