S-90324A072 8-32 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 corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior thread engagement with Class 3A fit and UNC coarse threading for reliable fastening in high-vibration applications
- High mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding loads
- Secure anti-rotation design with left-hand threading for specialized machinery and reverse-torque applications
- Easy installation and removal featuring a knurled socket head with 3/32" hex drive for improved grip
- Precision shoulder alignment with 1" length and tight diameter tolerance for accurate component positioning
- Compliant with global regulations including RoHS 3 and REACH for safe use in international markets
Professional Applications & Engineering Value
This 8-32 UNC left-hand thread shoulder screw delivers critical performance in precision assembly systems where reverse threading prevents unintended loosening from rotational forces. The 18-8 stainless steel material provides excellent corrosion resistance in manufacturing, automation, and outdoor equipment, while the 1" shoulder length ensures precise spacing and alignment of moving components like gears, bearings, and linkages. With a Class 3A thread fit and coarse UNC threading, it maintains secure fastening under high vibration, reducing maintenance needs. The knurled socket head with hex drive allows for quick tool engagement in confined spaces, improving assembly efficiency in industrial machinery, robotics, and conveyor systems.
Specification Summary & Compliance
This shoulder screw maintains Class 3A thread fit per UNC standards with a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of ±0.005". Manufactured from 18-8 stainless steel with Rockwell B55 hardness, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety. The product conforms to industrial specifications for left-hand thread shoulder screws with precise dimensional control.
