S-91327A167 5/16"-18 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: Nylon patch thread locker prevents loosening under dynamic loads, ensuring reliable performance in temperatures from -50° to 250°F.
- Exceptional corrosion resistance: 18-8 stainless steel with passivated finish provides long-lasting durability in harsh industrial environments.
- Precision alignment and bearing surface: 2" shoulder length with tight tolerances maintains accurate component positioning and reduces wear.
- High-strength construction: 70,000 psi tensile strength and Rockwell B55 hardness withstand heavy-duty mechanical stresses.
- Secure installation and removal: Hex socket drive with knurled head offers superior torque transmission and grip during assembly.
- Reliable thread engagement: Class 3A thread fit with 5/16"-18 UNC coarse thread ensures consistent fastening in demanding applications.
- Industry compliance assurance: Meets ASME B18.3 specifications and environmental standards including RoHS 3 and REACH.
Professional Applications & Engineering Value
This stainless steel shoulder screw is engineered to address critical alignment and vibration challenges in precision assemblies. The 2" shoulder length provides a stable bearing surface for rotating components in machinery, while the nylon patch locking technology secures the 5/16"-18 UNC coarse thread against loosening from operational vibrations. Made from 18-8 stainless steel with a passivated finish, it resists corrosion in manufacturing, automotive, and electronic equipment applications. The hex socket drive and knurled head facilitate easy installation in confined spaces, making it ideal for high-performance shoulder screw requirements where reliability and precision are paramount.
Specification Summary & Compliance
This shoulder screw features a Class 3A thread fit with UNC coarse threads, ensuring precise tolerance adherence. Manufacturing complies with ASME B18.3 standards, and the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
