S-95536A357 M4 x 22 mm ASTM A581, ASTM A582 Captive Panel Screws
Captive Panel Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Enhanced manual operation with knurled thumb head for secure grip without tools in tight spaces
- Superior corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
- Quick installation with coarse M4 x 0.7 mm metric threads that resist cross-threading
- Secure panel retention through partial threading design that prevents complete disassembly
- Consistent performance meeting ASTM A581 specifications for material quality and manufacturing standards
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
- Optimized dimensions with 8mm knurled head and 22mm length for standard panel thickness applications
Professional Applications & Engineering Value
This M4 thumb screw delivers exceptional value in panel fastening applications where frequent access is required. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for electronics enclosures, industrial control panels, and medical equipment that face moisture or chemical exposure. The knurled round head offers superior tactile grip for hand-tightening operations, eliminating the need for tools during maintenance cycles. With its coarse metric threading and partial threading design, this captive panel screw ensures secure attachment while preventing accidental disassembly. The right-hand thread direction follows standard installation practices, streamlining assembly processes in manufacturing and repair scenarios across various industrial sectors.
Specification Summary & Compliance
This metric thumb screw features M4 x 0.7 mm coarse threads with standard metric tolerances and partial threading over 5.5 mm of the 22 mm total length. The component meets ASTM A581 specifications for material quality and manufacturing standards. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and suitability for use in regulated industries including electronics, automotive, and industrial equipment manufacturing.
