S-97345A625 5/16"-18 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
- Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
- Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening with minimal risk of loosening in dynamic applications.
- Knurled socket head design provides enhanced grip and easy installation with standard hex tools, reducing assembly time.
- Long 4 3/4" shoulder length with tight tolerances for accurate component alignment and spacing in mechanical assemblies.
- Compliance with ASME B18.3 standards guarantees dimensional accuracy and interchangeability for consistent quality.
- RoHS 3 and REACH compliant for safe use in regulated industries, ensuring environmental and health safety standards are met.
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and heavy-duty equipment. The coarse UNC thread and Class 3A fit provide robust, vibration-resistant connections, reducing maintenance needs in high-cycle applications. The knurled socket head enhances tool engagement, preventing slippage during torque application. With a 4 3/4" shoulder maintaining tight diameter and length tolerances, it ensures precise alignment of gears, bearings, and linkages, minimizing wear and operational downtime. Ideal for industrial automation, conveyor systems, and assembly jigs, this screw delivers long-term reliability in corrosive or high-load environments.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC coarse thread with Class 3A fit for high precision. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and shoulder length is 4 3/4" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and quality for industrial use.
