S-92944A123 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, ideal for harsh industrial environments
- Precise component alignment ensured by the 5/8" shoulder with tight diameter and length tolerances
- High-strength performance delivering 70,000 psi tensile and 35,000 psi shear strength for demanding applications
- Secure fastening and easy installation with Class 3A thread fit and hex drive for reliable torque transfer
- Excellent durability provided by Rockwell B55 hardness, resisting wear in repetitive assembly operations
- Broad compatibility with 1/4"-20 UNC coarse threads and standard 82° countersink angle for versatile use
- Environmental compliance meeting RoHS 3 and REACH regulations for safe, sustainable industrial applications
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and strength challenges in industrial machinery and precision assemblies. The 5/8" shoulder length with controlled tolerances provides a stable pivot or bearing surface, preventing component misalignment and reducing wear. Its Class 3A thread fit and coarse UNC threads ensure secure fastening even in high-vibration environments, while the flat head with hex drive allows for flush mounting and easy installation in confined spaces. Made from corrosion-resistant stainless steel, it maintains integrity in moist or chemical-exposed settings, offering long-term reliability for alignment screws in automotive, aerospace, and manufacturing equipment.
Specification Summary & Compliance
This shoulder screw adheres to inch system dimensions with a 1/4"-20 UNC coarse thread and Class 3A thread fit for precise engagement. The shoulder features a diameter of 5/16" with tolerance of -0.004" to -0.002" and length of 5/8" with tolerance of -0.005" to 0.005", ensuring consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for regulated industrial applications.
