S-91259A171 10-32 ASTM A574 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 Capability with 140,000 psi tensile strength and 84,000 psi shear strength for reliable performance in high-stress applications.
- Superior Thread Precision with Class 3A fit ensures tight, secure fastening and reduces the risk of loosening under vibration.
- Enhanced Corrosion Resistance from the black oxide finish prolongs service life in demanding industrial environments.
- Accurate Shoulder Alignment with tight diameter and length tolerances provides precise component location and smooth rotational movement.
- High-Strength Material made from alloy steel with Rockwell C32 hardness offers excellent durability and wear resistance.
- Secure and Easy Installation with hex socket drive and knurled head for improved grip and torque application.
- Compliance with Industry Standards including ASTM A574, RoHS 3, and REACH ensures quality and environmental responsibility.
Professional Applications & Engineering Value
This 10-32 UNF shoulder screw is engineered to address critical alignment and strength requirements in precision assemblies. The alloy steel construction, combined with Class 3A thread fit, provides reliable fastening in applications where vibration resistance and exact positioning are essential, such as in machinery, automotive, and aerospace components. The black oxide finish enhances corrosion resistance, extending the screw's lifespan in harsh conditions. The precisely machined 1/4" shoulder length with tight tolerances ensures accurate bearing surfaces and reduces assembly errors, making it ideal for use in pivots, guides, and rotating mechanisms. Its hex drive and knurled head facilitate easy installation and maintenance, supporting efficient B2B operations.
Specification Summary & Compliance
This shoulder screw features a 10-32 UNF fine thread with Class 3A fit for high precision, and a shoulder diameter of 1/4" with tolerances from -0.004" to -0.002" and length tolerance of ±0.005". It is manufactured in accordance with ASTM A574 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to global standards.
