S-93897A417 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
- Superior chemical resistance from Nylon 6/6 material protects against industrial solvents and corrosive environments
- Excellent electrical insulation properties prevent current leakage and short circuits in sensitive applications
- Wide temperature tolerance (-40° to 185°F) ensures reliable performance across diverse operating conditions
- Precision Class 2A thread fit provides consistent, reliable fastening with reduced assembly variability
- Hex socket drive design enables secure installation in confined spaces with standard tools
- RoHS 3 compliance meets stringent environmental regulations for global market acceptance
- Smooth shoulder surface facilitates smooth rotation and precise alignment in pivot and bearing applications
Professional Applications & Engineering Value
This Nylon 6/6 plastic shoulder screw delivers critical engineering advantages where metal fasteners would compromise performance. The 1/4-20 UNC coarse thread with Class 2A fit ensures vibration-resistant fastening while the precisely machined 7/16" shoulder length provides accurate spacing and alignment in assemblies. The hex socket head allows for high-torque installation without stripping, making it ideal for electrical insulation applications and chemical-resistant fastening in industrial equipment. The material's natural lubricity reduces friction in rotating mechanisms, while its non-conductive properties eliminate galvanic corrosion risks in multi-material assemblies.
Specification Summary & Compliance
Manufactured to UNC thread standards with Class 2A thread fit for consistent engagement. Shoulder diameter tolerance maintained at -0.012" to -0.002" with shoulder length tolerance of -0.015" to 0.015" for precision alignment. RoHS 3 (2015/863/EU) compliant for environmental safety. Right-hand thread direction with coarse thread spacing ensures quick assembly and disassembly. Temperature performance rated from -40° to 185°F for diverse industrial environments.
