S-91264A160 3/8"-16 ASME B18.3, ASTM A574 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 140,000 psi tensile strength and 84,000 psi shear strength for reliable performance in demanding applications.
- Secure vibration-resistant fastening thanks to the integrated nylon pellet thread locker, maintaining integrity from -50° to 250°F.
- Precise alignment and smooth rotation ensured by the 1/2" shoulder diameter with tight tolerance and standard shoulder fit.
- Corrosion-resistant and durable finish with black oxide coating, enhancing longevity in harsh industrial environments.
- Easy installation and removal using the hex drive socket head and knurled texture for improved grip and torque application.
- High thread accuracy and reliability with Class 3A UNC coarse threads, reducing cross-threading risks and ensuring consistent engagement.
- Compliance with major industry standards including ASME B18.3, ASTM A574, RoHS 3, and REACH for assured quality and safety.
Professional Applications & Engineering Value
This alloy steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The 3/8"-16 UNC thread with Class 3A fit provides superior thread engagement, minimizing loosening under dynamic loads. The 1/2" shoulder diameter and 3 1/4" shoulder length offer exact positioning for components like gears, pulleys, and linkages, reducing wear and misalignment. The black oxide finish resists corrosion, while the nylon pellet thread locker ensures vibration resistance in temperatures from -50° to 250°F, making it ideal for automotive, aerospace, and industrial assembly applications where reliability and precision are paramount.
Specification Summary & Compliance
This shoulder screw features precise dimensions, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005", ensuring consistent performance. Threads adhere to UNC coarse standards with Class 3A fit for high accuracy. Manufactured in compliance with ASME B18.3 and ASTM A574 specifications, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safety and sustainability in industrial use.
