S-97345A657 1/4"-20 ASME B18.3 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
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for heavy-duty applications
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring reliable, vibration-resistant fastening
- Enhanced grip and tool engagement from the knurled head and standard hex socket drive for secure installation
- Accurate component alignment with precisely machined shoulder featuring tight diameter and length tolerances
- Long-term reliability backed by Rockwell B79 hardness and compliance with ASME B18.3 manufacturing standards
- Environmental and regulatory compliance meeting RoHS 3 and REACH requirements for global industrial use
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical engineering value in applications requiring precise alignment and corrosion resistance. The 1/4"-20 UNC coarse thread with Class 3A fit provides superior vibration resistance in machinery, automation systems, and precision instruments. The knurled socket head with hex drive ensures secure tool engagement during installation, while the precisely machined shoulder maintains component alignment in assemblies subject to rotational forces. With excellent corrosion resistance and high tensile strength, this fastener solves critical challenges in chemical processing, marine equipment, and food machinery where durability and precision are paramount.
Specification Summary & Compliance
This shoulder screw features precision Class 3A thread fit with 1/4"-20 UNC coarse threads and maintains tight shoulder diameter tolerance (-0.004" to -0.002") and shoulder length tolerance (-0.005" to 0.005"). Manufactured to ASME B18.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring quality and safety standards for industrial applications worldwide.
