S-94128A167 5/16"-18 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 alignment precision with exact 3/8" shoulder diameter and 1/4" shoulder length for stable component positioning
- Exceptional thread reliability through Class 3A fit UNC coarse threads that resist loosening under vibration
- Enhanced durability from Rockwell C32 hardened alloy steel construction for long service life
- Space-saving installation with headless slotted drive design ideal for compact assemblies
- Environmental compliance assurance meeting RoHS 3 and REACH standards for regulated industries
- Optimized assembly efficiency with right-hand coarse threads enabling quick installation
- Consistent performance through precise shoulder diameter and length tolerances for repeatable results
Professional Applications & Engineering Value
This alloy steel shoulder screw delivers critical precision in applications requiring exact component alignment and rotational stability. The UNC coarse thread with Class 3A fit ensures secure fastening in high-vibration environments common in industrial machinery, while the precisely machined shoulder provides accurate bearing surfaces for gears, pulleys, and rotating assemblies. The headless slotted drive design allows for flush mounting in space-constrained applications, making it ideal for precision instruments, automation equipment, and mechanical linkages where Rockwell C32 hardness maintains dimensional stability under load. This combination of features solves alignment challenges while providing reliable, long-term performance in demanding industrial settings.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit for superior engagement, featuring UNC 5/16"-18 coarse threads with right-hand orientation. Shoulder specifications include 3/8" diameter (-0.001" to 0" tolerance) and 1/4" length (0" to 0.005" tolerance) for exact alignment applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for regulated industries and international markets.
