S-94328A938 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
- Exceptional durability with 140,000 psi tensile strength and Rockwell C30 hardness for reliable performance in demanding applications
- Precise alignment capability through Class 3A thread fit and controlled shoulder tolerances for consistent assembly accuracy
- Enhanced corrosion resistance with black oxide finish providing protection in industrial environments
- Superior grip and torque transmission from knurled head and 5/32" hex drive design
- Optimized for high-load applications with coarse UNC threading (1/4-20) and 7/16" shoulder length
- Low-profile socket head design for space-constrained installations while maintaining accessibility
- Compliance with environmental regulations including RoHS 3 and REACH for global manufacturing compatibility
Professional Applications & Engineering Value
This alloy steel shoulder screw with black oxide finish delivers critical engineering solutions for precision machinery and industrial equipment. The Class 3A thread fit ensures vibration-resistant fastening in high-stress applications, while the precisely controlled shoulder diameter tolerance (-0.004" to -0.002") guarantees accurate component alignment in assemblies. The coarse UNC threading (1/4-20) provides superior holding power in demanding environments, and the knurled socket head with 5/32" hex drive enables secure tool engagement during installation. These shoulder screws are engineered to solve alignment challenges in robotics, automation systems, and precision manufacturing equipment where dimensional stability and repeatable performance are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and controlled shoulder tolerances (diameter: -0.004" to -0.002", length: -0.005" to 0.005"). Features UNC coarse threading (1/4-20) with 7/16" thread length and 3/8" shoulder length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications and manufacturing requirements.
