S-92552A434 M4 x 20 mm DIN 653 Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation and removal with knurled round head design for superior grip without additional tools
• Enhanced corrosion resistance through black-oxide steel construction for extended service life in demanding environments
• Reliable load-bearing capability with 70,000 psi tensile strength and Rockwell B84 hardness for high-stress applications
• Precision thread engagement with Class 6g metric threads ensuring consistent fastening performance
• Space-efficient low-profile design with 3.5 mm head height for applications with limited clearance
• Full-length threading providing maximum grip length and adjustment flexibility
• Industry-standard compliance meeting DIN 653 specifications for guaranteed interchangeability

Professional Applications & Engineering Value

This M4 thumb screw delivers exceptional engineering value through its black-oxide steel construction and precision metric threading. The combination of 70,000 psi tensile strength and Rockwell B84 hardness ensures reliable performance in frequent adjustment scenarios where durability is critical. The fully threaded design with Class 6g thread fit provides consistent clamping force across the entire 20 mm length, while the knurled round head eliminates slippage during manual operation. Ideal for industrial equipment, electronic enclosures, and machinery requiring tool-free fastening solutions, this component addresses common challenges of repeated access panels and service points where quick maintenance is essential.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M4 x 0.7 mm coarse pitch threads and Class 6g tolerance for optimal fit. The screw conforms to DIN 653 manufacturing standards and demonstrates regulatory compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. The right-hand thread direction and low-profile round head design ensure compatibility with standard industrial applications while maintaining dimensional accuracy throughout the 20 mm fully threaded length.