S-92944A121 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 corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing performance
- Precision Class 3A thread fit ensures secure, vibration-resistant fastening in demanding applications
- Optimized shoulder design with 5/16" diameter and 3/8" length provides accurate component alignment and spacing
- Easy installation and removal with hex drive and standard 82° countersink angle for flush mounting
- Coarse UNC threading enables quick assembly and reduced cross-threading risk
- Compliant with environmental regulations including RoHS 3 and REACH for global manufacturing compatibility
Professional Applications & Engineering Value
This 18-8 Stainless Steel shoulder screw delivers critical engineering value in precision assembly applications where alignment accuracy and corrosion resistance are paramount. The Class 3A thread fit and UNC coarse threading provide superior vibration resistance in machinery, automotive, and conveyor systems, while the precisely machined shoulder maintains component positioning under dynamic loads. The flat head with hex drive allows for flush mounting in tight spaces, and the high tensile strength ensures reliable performance in structural applications. Ideal for pivot points, rotating assemblies, and precision fixtures, this shoulder screw solves alignment challenges while offering the durability needed for industrial environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit and UNC thread specifications. Shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005" ensure consistent performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength, meeting industrial fastening requirements for precision applications.
