S-91327A128 10-24 ASME B18.3 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
- Vibration-resistant locking with nylon patch thread locker maintains secure fastening in temperatures from -50° to 250°F, preventing loosening in dynamic applications.
- Exceptional corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh industrial environments.
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical assemblies.
- Precision shoulder alignment with a 2" shoulder length held to tight ±0.005" tolerance for accurate component positioning.
- Secure grip and easy installation thanks to the knurled head and 1/8" hex drive, allowing for firm handling and torque application.
- Reliable thread engagement with Class 3A UNC coarse threads ensuring consistent, high-quality fits in right-hand threaded applications.
- Broad compliance with ASME B18.3 standards and environmental regulations like RoHS 3 and REACH for global industrial use.
Professional Applications & Engineering Value
This 10-24 UNC shoulder screw is engineered to address critical alignment and vibration challenges in precision machinery. The 2" shoulder with minimal tolerance variation provides a stable pivot or spacer in assemblies like rotating shafts, bearings, and linkages, reducing wear and misalignment. Made from 18-8 stainless steel, it resists rust and corrosion in moist or chemical-exposed settings, while the nylon patch thread locker secures the Class 3A thread fit against shocks and thermal cycles. Ideal for automotive, aerospace, and industrial equipment, this screw ensures durability and compliance with ASME B18.3 specifications, offering a reliable solution for high-stress applications.
Specification Summary & Compliance
This shoulder screw features a 10-24 UNC coarse thread with Class 3A fit for precise engagement, a shoulder diameter of 1/4" with tolerance from -0.004" to -0.002", and shoulder length of 2" within ±0.005". It meets ASME B18.3 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability.
