S-91273A642 3/8"-16 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, ideal for harsh industrial environments.
- Superior wear resistance and reduced light glare from the black oxide finish, extending service life.
- High tensile and shear strength (70,000 psi and 35,000 psi respectively) for reliable performance in heavy-duty applications.
- Precise component alignment and rotation enabled by the 4" shoulder with tight length tolerance.
- Secure, high-torque installation using the standard hex socket drive and knurled head for improved grip.
- Wide compatibility with coarse UNC threads and Class 2A fit for easy assembly and interchangeability.
- Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards.
Professional Applications & Engineering Value
This 3/8"-16 shoulder screw is engineered to solve critical alignment and pivot point challenges in machinery and assemblies. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, while the black oxide finish adds an extra layer of durability and minimizes friction. The 4" precision shoulder acts as a reliable bearing surface or pivot, maintaining exact positioning in applications like rotating shafts, gears, and linkages. With a Rockwell B55 hardness and high tensile strength, it withstands repetitive motion and heavy loads without failure. The hex socket head and knurled texture ensure secure driving, reducing the risk of stripping during installation in automated or manual assembly lines.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard tolerance and easy assembly. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 4" with a tolerance of -0.005" to 0.005", ensuring precise dimensional accuracy. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, it meets environmental and safety regulations for global use.
