S-92012A404 5/16"-18 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Enhanced Durability & Corrosion Resistance - Black oxide finish provides reliable protection against rust and wear in demanding industrial environments.
- Superior Tensile Strength - Alloy steel construction with 140,000 psi tensile strength ensures secure, long-lasting fastening under high-stress conditions.
- Precision Shoulder Alignment - Tight shoulder diameter tolerance (-0.001" to 0") and precise fit enable accurate component positioning and reduced assembly vibration.
- Easy Installation & Removal - Hex socket drive (3/16") allows for quick, tool-accessible tightening in confined spaces without stripping.
- Reliable Thread Engagement - Coarse UNC threads with Class 2A fit offer consistent, vibration-resistant connections for dynamic applications.
- Broad Industrial Compliance - Meets RoHS 3 and REACH regulations, ensuring safe use in global manufacturing and engineering projects.
- Optimized Load Distribution - 5/8" shoulder length with controlled tolerance (0" to 0.002") supports bearing surfaces and minimizes component shift.
Professional Applications & Engineering Value
This shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The alloy steel core, hardened to Rockwell C32, withstands repetitive stress in machinery, while the black oxide finish resists corrosion in humid or abrasive settings. The 5/8" shoulder with tight diameter and length tolerances acts as a precise pivot or spacer in rotating parts, reducing wear on connected components. With 5/16"-18 UNC coarse threads and Class 2A fit, it ensures rapid assembly and stable performance in automation equipment, conveyor systems, and motor mounts, where vibration resistance and dimensional accuracy are paramount.
Specification Summary & Compliance
The screw adheres to UNC thread standards with Class 2A thread fit for consistent engagement. Shoulder dimensions include a diameter of 3/8" (tolerance: -0.001" to 0") and length of 5/8" (tolerance: 0" to 0.002") for precise assembly. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental and safety compliance in industrial applications.
