S-92820A225 M5 x 20 mm High-Strength Metric Steel Serrated-Flange Hex Head Screws

High-Strength Metric Steel Serrated-Flange Hex Head Screws

0277FA00004 High-Strength Metric Steel Serrated-Flange Hex Head Screws
0277FA00004 High-Strength Metric Steel Serrated-Flange Hex Head Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0277FA00004
Equivalent to mcmaster :
92820A225

Basic Information

Screw Features Flanged
System of Measurement Metric

Head Parameters

Head Type Hex
Head Width 8 mm
Head Height 4.3 mm

Dimensions

Length 20 mm
Flange Diameter 11.2 mm

Thread Parameters

Thread Type Metric
Thread Size M5
Thread Pitch 0.8 mm
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 6g
Threading Fully Threaded
Locking Type Serrations

Tip & Drive Parameters

Drive Style External Hex

Material & Strength

Material Black-Oxide Steel
Hardness Rockwell C27
Tensile Strength 130000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Enhanced corrosion resistance through black-oxide steel coating, extending service life in demanding industrial environments
  • Superior holding power with 130,000 psi tensile strength and Rockwell C27 hardness for reliable performance under high stress
  • Secure vibration-resistant fastening thanks to integrated serrated locking flange that prevents loosening
  • Precise thread engagement with Class 6g tolerance ensuring consistent fit and reduced assembly issues
  • Quick installation and removal using standard external hex drive tools for efficient maintenance
  • Full thread coverage along the 20mm length provides maximum grip strength across the entire fastener
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M5 hex head screws deliver exceptional performance where vibration resistance and corrosion protection are critical. The black-oxide steel construction provides superior corrosion resistance compared to standard finishes, while the serrated locking flange eliminates the need for additional washers and prevents loosening in high-vibration environments. The Class 6g thread fit ensures precise engagement with mating components, reducing the risk of cross-threading and assembly errors. With 130,000 psi tensile strength and fully threaded design, these metric coarse thread screws offer reliable fastening solutions for machinery, equipment manufacturing, and automotive applications where durability and consistent performance are paramount.

Specification Summary & Compliance

This M5x0.8x20mm hex head screw features Class 6g thread tolerance with coarse thread spacing (0.8mm pitch) and fully threaded design. The fastener meets international metric standards and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Manufacturing specifications include external hex drive (8mm head width), 11.2mm flange diameter, and 4.3mm head height for standardized tool compatibility across industrial applications.

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