S-92957A250 M4 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
- Effortless manual installation and removal with knurled thumb head and 2.5mm hex drive for superior grip in tight spaces
- Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise component alignment ensured by the 20mm shoulder with tight diameter tolerance for reduced assembly vibration
- Reliable thread engagement with Class 6g metric coarse threads providing secure fastening in high-vibration applications
- High mechanical strength with 70,000 psi tensile strength and Rockwell B83 hardness for demanding load conditions
- Quick tool-free adjustments enabled by the raised round thumb head design, perfect for frequently accessed panels
- Global regulatory compliance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
This M4 shoulder screw combines the convenience of manual operation with precision engineering for industrial applications requiring frequent access or adjustment. The 18-8 stainless steel construction provides excellent corrosion resistance in manufacturing environments, while the 20mm shoulder length with precise diameter control ensures perfect alignment in machinery, jigs, and fixtures. The knurled thumb head with hex drive accommodates both manual and tool-assisted installation, making it ideal for access panels, electronic enclosures, and precision equipment where vibration resistance and repeated access are critical. The Class 6g metric thread with coarse pitch delivers reliable performance in high-vibration industrial settings.
Specification Summary & Compliance
This precision shoulder screw features M4 x 0.7mm coarse metric threads with Class 6g tolerance, 20mm shoulder length with ±0.05mm tolerance, and 5mm shoulder diameter with -0.025 to 0mm tolerance. Manufactured from 18-8 stainless steel with Rockwell B83 hardness and 70,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.
