S-91273A615 5/16"-24 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and black oxide finish, ideal for harsh industrial environments
- High tensile and shear strength (70,000 PSI tensile, 35,000 PSI shear) ensures reliable performance under heavy loads and vibration
- Precise shoulder alignment with tight diameter and length tolerances for accurate component positioning in assemblies
- Secure hex socket drive with 5/32" hex size and knurled head for non-slip installation and high-torque applications
- Fine UNF threading (5/16"-24) with Class 2A fit provides superior vibration resistance and secure fastening in precision equipment
- Consistent material hardness (Rockwell B55) maintains thread integrity and prevents stripping during repeated use
- Full regulatory compliance with RoHS 3 and REACH standards for safe use in global industrial and electronic applications
Professional Applications & Engineering Value
Engineered for precision industrial applications, these 18-8 stainless steel shoulder screws deliver critical alignment stability in rotating assemblies, machinery guides, and pivoting mechanisms. The black oxide finish enhances surface durability while providing additional corrosion protection in humid or chemical-exposed environments. With UNF fine threading maintaining secure engagement under vibration, and the 1/2" shoulder length manufactured to exacting tolerances, these components eliminate play in precision equipment while supporting radial loads. Ideal for automation systems, conveyor components, and medical device manufacturing where Class 2A thread fit ensures consistent performance and easy assembly.
Specification Summary & Compliance
This shoulder screw features 5/16"-24 UNF fine threading with Class 2A thread fit for precision engagement. Shoulder dimensions maintain tight tolerances (diameter: -0.004" to -0.002", length: -0.005" to 0.005") ensuring consistent alignment. Manufactured from 18-8 stainless steel with Rockwell B55 hardness and black oxide finish. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for restricted substance control.
