S-91273A656 3/8"-24 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 alignment and smooth rotation ensured by the 2" shoulder length with tight tolerances for reliable assembly.
- Enhanced durability and wear resistance from the black oxide finish, which also reduces light reflection.
- Secure, non-slip fastening thanks to the knurled head and hex socket drive for easy installation with standard tools.
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
- Accurate thread engagement with Class 2A fit and 3/8"-24 UNF fine threads, reducing the risk of cross-threading.
- Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for applications in humid or chemically aggressive settings like automotive assemblies and industrial equipment. The 2" shoulder length provides a stable pivot or bearing surface, reducing friction and extending the life of moving parts. Combined with the black oxide finish for added protection and the UNF fine threads for secure fastening, this screw ensures reliable performance in high-stress environments, from conveyor systems to precision instruments, minimizing maintenance downtime and enhancing operational efficiency.
Specification Summary & Compliance
This shoulder screw adheres to Class 2A thread fit for precise dimensional accuracy, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It meets UNF thread standards (3/8"-24) and is manufactured from 18-8 stainless steel with a hardness of Rockwell B55. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial applications.
