S-94035A305 1/4"-20 MS51576-27, NASM51576 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 and passivated finish, ideal for harsh industrial environments.
- Precise component alignment ensured by a 5/16" shoulder diameter with tight tolerances (±0.002") for reliable assembly.
- High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
- Easy installation and removal with a standard hex socket head and 5/32" drive size, reducing assembly time.
- Reliable thread engagement provided by Class 2A UNC coarse threads, ensuring secure fastening.
- Durable construction that withstands wear and tear, extending service life in machinery and equipment.
- Compliance with industry standards including MS51576-27, RoHS 3, and REACH for safe, regulated use.
Professional Applications & Engineering Value
This 1/4"-20 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. Made from 18-8 stainless steel with a passivated finish, it resists corrosion and oxidation, making it suitable for applications in machinery, automotive assemblies, and electronic enclosures where exposure to moisture or chemicals is common. The precise shoulder diameter and tight tolerances facilitate accurate positioning of components, reducing misalignment and wear. Its coarse thread and Class 2A fit ensure quick, secure fastening, while the socket head design allows for efficient tool access in confined spaces. This screw delivers long-term reliability, minimizing maintenance needs and downtime in industrial applications.
Specification Summary & Compliance
This shoulder screw features a 1/4"-20 UNC thread with Class 2A fit for standard tolerances, a shoulder diameter of 5/16" with tight manufacturing tolerances, and a thread length of 7/16". It complies with MS51576-27 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to global standards for industrial components.