S-91054A505 3/8"-16 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Enhanced wear and galling resistance from TiCN coating, extending service life in high-friction applications
- Precise component alignment ensured by a shoulder diameter with tight tolerance of -0.002" to 0"
- High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding loads
- Reliable fastening and easy installation via 1/4" hex drive socket head, preventing cam-out
- Secure thread engagement with Class 2A UNC coarse threads for quick assembly and vibration resistance
- Compliance with global safety standards including RoHS 3 and REACH for environmentally responsible sourcing
Professional Applications & Engineering Value
This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery. The 18-8 stainless steel base material provides excellent corrosion resistance, while the TiCN coating significantly reduces wear in high-cycle applications like rotating assemblies and pivoting joints. The precisely machined 1/2" shoulder diameter with minimal tolerance ensures accurate positioning of components such as gears, pulleys, and linkages, eliminating misalignment and reducing maintenance downtime. Its coarse thread design and Class 2A fit facilitate quick installation and reliable performance in vibrating environments, making it ideal for automotive, packaging, and automation systems where precision and longevity are paramount.
Specification Summary & Compliance
This shoulder screw features a 3/8"-16 UNC thread with Class 2A fit for standard industrial compatibility. The shoulder diameter tolerance is tightly controlled at -0.002" to 0", and shoulder length tolerance is 0" to 0.003" for precise assembly. Manufactured from 18-8 stainless steel with a TiCN coating, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring adherence to environmental and safety regulations without compromising on mechanical properties like 70,000 psi tensile strength.
