S-91273A662 1/2"-13 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
- Corrosion-resistant performance with 18-8 Stainless Steel construction and Black Oxide finish, ideal for harsh industrial environments.
- Precise alignment and load distribution thanks to the 5/8" shoulder length and standard shoulder fit, minimizing component wear.
- High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures reliable fastening under heavy-duty mechanical stress.
- Easy installation and removal with a knurled socket head and 1/4" hex drive, providing secure grip and torque application.
- Consistent thread engagement from 1/2"-13 UNC coarse threads with Class 2A fit, reducing cross-threading risks in assembly.
- Durable material hardness (Rockwell B55) maintains structural integrity and resists deformation during repeated use.
- Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.
Professional Applications & Engineering Value
This shoulder screw is engineered to address common challenges in machinery and equipment assembly, where precision alignment and load-bearing capacity are critical. The 18-8 Stainless Steel material, combined with a Black Oxide finish, offers excellent corrosion resistance, extending service life in humid or chemically exposed settings. The 5/8" shoulder length and standard shoulder fit provide a stable pivot or spacer, reducing misalignment and wear in rotating parts like bearings, pulleys, or linkages. With 1/2"-13 UNC coarse threads and a knurled socket head, it ensures quick, secure fastening in high-vibration applications, from industrial automation to heavy machinery, enhancing operational reliability and reducing maintenance downtime.
Specification Summary & Compliance
The screw features precise dimensional tolerances, including a Class 2A thread fit for consistent engagement and shoulder diameter tolerance of -0.004" to -0.002". It adheres to UNC thread standards and is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.
