S-92944A125 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
- Exceptional corrosion resistance with 18-8 stainless steel construction for reliable performance in harsh industrial environments.
- High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures secure, long-lasting fastening under heavy loads.
- Precision Class 3A thread fit provides smooth assembly and vibration resistance in critical applications.
- Standard 82° countersink angle allows for flush mounting and improved aesthetic finish in assemblies.
- Hex drive design enables easy installation and removal with standard tools, reducing assembly time.
- Durable Rockwell B55 hardness maintains thread integrity and resists wear over repeated use.
- Full regulatory compliance with RoHS 3 and REACH ensures safe, environmentally responsible sourcing.
Professional Applications & Engineering Value
This 1/4"-20 UNC shoulder screw is engineered to address common industrial challenges like misalignment and component wear. Made from 18-8 stainless steel, it offers excellent corrosion resistance, making it ideal for machinery, automotive, and electronics assemblies exposed to moisture or chemicals. The Class 3A thread fit and coarse UNC threads ensure quick, secure fastening with high vibration resistance, while the smooth flat head and standard countersink angle provide a clean, flush finish. The 1-inch shoulder length and precise diameter tolerances allow for accurate pivoting and spacing in rotating parts, reducing maintenance needs and extending equipment life in demanding industrial applications.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC coarse thread with Class 3A fit for tight tolerances and reliable engagement. Key dimensions include a shoulder diameter of 5/16" (tolerance: -0.004" to -0.002") and shoulder length of 1" (tolerance: -0.005" to 0.005"), ensuring precision in assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting industry standards for safety and environmental responsibility.
