S-90325A172 8-32 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 and passivated finish, ensuring long-term reliability in harsh environments.
- Precise alignment and reduced assembly wear due to the accurately machined shoulder with controlled diameter and length tolerances.
- High strength for demanding applications, offering 70,000 psi tensile strength and Rockwell B55 hardness.
- Easy installation and removal with a standard hex socket drive, minimizing tool slippage and damage.
- Reliable thread engagement provided by the 8-32 UNC coarse thread with Class 2A fit, reducing cross-threading risks.
- Compliance with strict environmental regulations, meeting RoHS 3 and REACH standards for safe industrial use.
- Versatile right-hand threading compatible with standard components, simplifying inventory and assembly processes.
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The passivated finish enhances corrosion resistance, making it ideal for machinery, automotive, and electronics where exposure to moisture or chemicals is common. Its precise shoulder dimensions (3/16" diameter, 1/4" length) ensure accurate component positioning, reducing wear and misalignment in pivots, guides, and rotating parts. The UNC coarse threads with Class 2A fit provide secure fastening while accommodating minor misalignments, and the hex socket drive allows for high-torque installation in confined spaces. With high tensile strength and hardness, it supports heavy-load applications without failure, delivering long-term performance and reduced maintenance costs.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement. Shoulder dimensions include a diameter of 3/16" (tolerance: -0.001" to 0") and length of 1/4" (tolerance: 0" to 0.002") for precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.
