S-8077A537 5/8"-11 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
- Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life.
- Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for high-stress applications.
- Precision alignment and pivot function enabled by the 7 1/2" shoulder with tight diameter and length tolerances.
- Secure, high-torque installation with a 3/8" hex socket drive and a knurled head for improved grip.
- Reliable thread engagement with Class 3A fit 5/8"-11 UNC coarse threads for quick assembly and vibration resistance.
- Enhanced durability and minimal light reflection from the Black Oxide finish, which also provides mild corrosion protection.
- Guaranteed quality and material safety, complying with ASME B18.3 standards and being RoHS 3 & REACH compliant.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical challenges in machinery assembly, automation, and precision tooling. The 316 Stainless Steel material provides excellent resistance to chemicals and saltwater corrosion, making it suitable for food processing, marine, and chemical industry applications. The long, precision-ground shoulder acts as a stable bearing surface or pivot point, eliminating the need for separate spacers and reducing assembly components. The coarse UNC threads and Class 3A fit ensure fast, secure fastening in metal components, resisting loosening under vibration. Combined with the Black Oxide finish and socket head design, this screw delivers reliable performance in high-strength, repetitive-motion industrial systems.
Specification Summary & Compliance
This shoulder screw features a 5/8"-11 UNC thread with a Class 3A fit for precision. The shoulder diameter is 3/4" with a tolerance of -0.004" to -0.002", and the shoulder length is 7 1/2" with a tolerance of -0.005" to 0.005". It is manufactured to meet ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material quality.
