S-90292A142 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
- Exceptional corrosion resistance and durability thanks to 17-4 PH Stainless Steel construction, ideal for harsh industrial environments.
- Superior strength for demanding applications with a high 130,000 psi tensile strength and 65,000 psi minimum shear strength.
- Precise and secure fit ensured by Class 3A thread fit and controlled shoulder diameter/length tolerances for reliable assembly.
- Easy installation and removal with a standard hex socket drive and knurled head for improved grip during tool use.
- Guaranteed interchangeability and reliability as it meets the stringent dimensional requirements of ASME B18.3.
- Safe for various industries with compliance to RoHS 3 and REACH environmental regulations.
- Optimized for robust performance featuring a Rockwell C28 hardness and a coarse UNC thread for strong holding power.
Professional Applications & Engineering Value
This 17-4 PH Stainless Steel shoulder screw is engineered to solve critical alignment and pivot point challenges in machinery and assemblies. Its 1" shoulder length and 3/8" shoulder diameter provide a precise bearing surface, eliminating misalignment and reducing wear on mating parts. The 5/16"-18 UNC coarse thread and Class 3A fit ensure a tight, secure fastening in metals and other rigid materials, vital for high-vibration environments. The hex socket drive and knurled head facilitate easy installation in confined spaces, making it an ideal industrial fastener for applications in automotive jigs, conveyor systems, and precision robotic arms where strength, corrosion resistance, and dimensional accuracy are non-negotiable.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC thread with a Class 3A fit and a coarse thread spacing. The shoulder diameter is 3/8" with a tolerance of -0.004" to -0.002", and the shoulder length is 1" with a tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant.
