S-91273A339 M3 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise alignment and reduced assembly time thanks to the 22mm shoulder with tight ±0.25mm length tolerance
- High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure, non-slip fastening enabled by the knurled head and 2mm hex socket drive for reliable torque transmission
- Consistent thread engagement with Class 5g6g thread fit and M3 x 0.5mm coarse pitch for quick installation
- Excellent durability from Rockwell B55 hardness, resisting wear and deformation under load
- Compliance with global regulations, including RoHS 3 and REACH, ensuring safe and sustainable use
Professional Applications & Engineering Value
This M3 shoulder screw is engineered to solve critical alignment and pivot-point challenges in precision assemblies. The 22mm shoulder length with minimal tolerance ensures exact component positioning, eliminating the need for additional bushings or spacers in machinery, automation systems, and electronic enclosures. Made from 18-8 stainless steel, it offers reliable corrosion resistance, while the hex socket drive and knurled head provide secure, tool-friendly installation. The Class 5g6g thread fit and coarse pitch threading facilitate rapid assembly, reducing labor time in high-volume production environments. Ideal for applications requiring repeated disassembly, this screw maintains integrity thanks to its high tensile and shear strength.
Specification Summary & Compliance
This shoulder screw features an M3 x 0.5mm coarse pitch thread with Class 5g6g thread fit, ensuring dimensional accuracy per metric standards. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm for precise engineering fits. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for regulated industrial and electronic applications.
