S-90311A148 10-24 ASME B18.3 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
- Vibration-resistant secure fastening with permanent nylon patch thread locker that maintains integrity from -50° to 250°F
- Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction
- Precision alignment and bearing surface with consistent 1/4" shoulder diameter and 1-1/2" shoulder length
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Reliable thread engagement ensured by Class 3A thread fit for reduced backlash and secure assembly
- Easy installation and removal with standard hex socket drive and knurled head for improved grip
- Industry compliance assurance meeting ASME B18.3 specifications and environmental regulations (RoHS 3/REACH)
Professional Applications & Engineering Value
This 10-24 UNC shoulder screw delivers exceptional engineering value in precision assemblies where alignment and vibration resistance are critical. The 316 stainless steel construction provides outstanding corrosion resistance in chemical, marine, and food processing environments, while the permanent nylon patch thread locker prevents loosening under dynamic loads and thermal cycling. The precision-ground shoulder maintains consistent spacing in rotating assemblies, pivot points, and guide mechanisms, eliminating the need for additional spacers or bushings. With its Class 3A thread fit and knurled socket head, this fastener ensures reliable performance in automated equipment, robotics, and precision instrumentation where maintenance downtime must be minimized.
Specification Summary & Compliance
This shoulder screw features 10-24 UNC coarse threads with Class 3A fit for precision engagement, manufactured to ASME B18.3 specifications. Critical dimensions include 1/4" shoulder diameter (-0.004" to -0.002" tolerance) and 1-1/2" shoulder length (±0.005" tolerance). The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility while delivering 70,000 psi tensile strength and Rockwell B79 hardness for industrial durability.
