S-97345A254 4-40 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 316 stainless steel construction, ideal for harsh environments and extended service life.
- High-strength performance offering 70,000 psi tensile and 35,000 psi shear strength for reliable use in demanding applications.
- Precise Class 3A thread fit ensures secure, vibration-resistant assemblies with minimal play.
- Knurled socket head provides enhanced grip for easy installation and removal with a 5/64" hex drive.
- Long 1-3/4" shoulder length accommodates precise component spacing and alignment in assemblies.
- Compliance with RoHS 3 and REACH standards guarantees environmental safety and regulatory acceptance.
- Coarse UNC threads enable quick assembly and disassembly, reducing installation time.
Professional Applications & Engineering Value
This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in industrial settings, such as corrosion from chemicals or moisture and mechanical stress in high-load assemblies. The Class 3A thread fit and precise shoulder diameter ensure minimal tolerance deviations, reducing wear and preventing misalignment in machinery like pivots, gears, and linkages. Its coarse UNC threads and knurled socket head facilitate efficient maintenance, while the 1-3/4" shoulder length provides stable support for rotating parts. Ideal for applications in aerospace, automotive, and manufacturing, this screw delivers reliable performance where corrosion resistance and high tensile strength are paramount.
Specification Summary & Compliance
This shoulder screw adheres to UNC thread standards with a Class 3A fit for tight tolerances, ensuring dimensional accuracy in thread diameter and spacing. The shoulder features a diameter of 1/8" with a tolerance of -0.004" to -0.002" and a length of 1-3/4" with a tolerance of -0.005" to 0.005". It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industries.
