S-90807A127 5/16"-18 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 load-bearing capacity with 140,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through black oxide finish, extending service life in harsh industrial environments
- Precision thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Enhanced grip and handling with knurled socket head design for easier installation and removal
- Robust material construction using alloy steel with Rockwell C32 hardness for lasting durability
- Versatile shoulder design with 1-1/4" length providing precise component alignment and spacing
- Industry compliance assurance meeting RoHS 3 and REACH regulations for global manufacturing applications
Professional Applications & Engineering Value
This alloy steel shoulder screw with black oxide finish delivers critical performance in precision machinery and industrial equipment. The 5/16"-18 UNC coarse threads with Class 3A fit provide superior clamping force and vibration resistance in high-stress applications. The precisely machined shoulder maintains accurate component alignment in rotating assemblies, pivot points, and guide mechanisms. The knurled socket head with hex drive ensures secure tool engagement during installation, reducing slippage in confined spaces. Ideal for manufacturing equipment, automation systems, and heavy machinery where 140,000 psi tensile strength and dimensional stability are paramount for operational reliability.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC thread specifications. The shoulder diameter maintains tight tolerance of -0.004" to -0.002" for precise component fitting. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The coarse thread spacing and right-hand thread direction follow industry-standard UNC specifications for reliable performance across various engineering applications.
