S-91829A401 5/16"-18 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Precise component alignment enabled by the smooth, accurately machined shoulder with tight diameter and length tolerances
- High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Secure, reliable fastening with Class 2A thread fit and coarse UNC threads for vibration resistance and easy assembly
- Streamlined installation using the socket head design for high-torque applications and clean aesthetic finish
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Dimensional consistency in inch system measurements ensuring interchangeability and reduced assembly errors
Professional Applications & Engineering Value
This precision shoulder screw is engineered to solve critical alignment and durability challenges in industrial machinery. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion and wear, extending service life in demanding environments. The precise shoulder fit (3/8" diameter, 5/16" length) ensures accurate component positioning in assemblies like rotating shafts, pivots, and guides, eliminating misalignment issues. With 70,000 psi tensile strength and Rockwell B55 hardness, it maintains structural integrity under high stress. The socket head design and coarse UNC threads facilitate quick installation in tight spaces while the Class 2A thread fit guarantees consistent engagement. Ideal for automation equipment, conveyor systems, and precision instruments where reliability and dimensional accuracy are paramount.
Specification Summary & Compliance
This shoulder screw maintains Class 2A thread fit per UNC standards with precise shoulder diameter tolerance (-0.001" to 0") and shoulder length tolerance (0" to 0.002"). Manufactured to inch system specifications with 5/16"-18 UNC coarse threads and right-hand thread direction. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions.
