S-93897A440 1/4"-20 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
- Corrosion-resistant Nylon 6/6 construction eliminates rust and galvanic corrosion in harsh environments
- Precision-machined shoulder with tight tolerances ensures accurate component alignment and smooth rotational movement
- Wide temperature range (-40° to 185° F) maintains structural integrity in both freezing and elevated temperature applications
- Class 2A UNC coarse threads provide faster assembly and reduced risk of cross-threading in industrial settings
- Socket head with 5/32" hex drive allows for high-torque installation in confined spaces
- RoHS 3 compliance meets international environmental standards for restricted substances
- Non-conductive and non-magnetic properties prevent electrical interference in sensitive equipment
Professional Applications & Engineering Value
This Nylon 6/6 plastic shoulder screw delivers exceptional engineering value where metal fasteners fail. The 3/4" shoulder length with precise diameter control serves as an integral bearing surface, eliminating the need for additional spacers in assemblies requiring rotational or sliding motion. The 1/4"-20 UNC coarse thread configuration ensures rapid installation while maintaining secure fastening in plastics, composites, and soft materials. Ideal for electrical enclosures, food processing equipment, and medical devices, this corrosion-resistant fastener prevents contamination and electrical conductivity issues. The smooth socket head with hex drive accommodates high installation torque without compromising the polymer material integrity.
Specification Summary & Compliance
Manufactured to inch system standards with Class 2A thread fit for consistent engagement. Shoulder diameter maintains -0.012" to -0.002" tolerance while shoulder length holds ±0.015" precision. Complies with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances. The UNC coarse thread pattern follows standardized industrial specifications for reliable performance across applications.
