S-99477A131 M3 x 6 mm DIN 912, UL 94 HB Plastic Socket Head Screws

Plastic Socket Head Screws

0021FA00393 Plastic Socket Head Screws
0021FA00393 Plastic Socket Head Screws

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

Part No.
Part No. 0021FA00393
Equivalent to mcmaster :
99477A131

Basic Information

Color Off-White
System of Measurement Metric

Head Parameters

Head Type Socket
Head Diameter 5.5 mm
Head Height 3 mm
Socket Head Profile Standard

Dimensions

Length 6 mm

Thread Parameters

Thread Type Metric
Thread Size M3
Thread Pitch 0.5 mm
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 6g
Threading Fully Threaded

Tip & Drive Parameters

Drive Style Hex
Drive Size 2.5 mm

Material & Strength

Material Polypropylene Plastic
Hardness Not Rated
Tensile Strength 4500 psi

Temperature & Environment

Temperature Range -20° to 180° F
REACH Compliant
RoHS Compliant
Specifications Met DIN 912, UL 94 HB
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Corrosion-resistant polypropylene construction ensures reliable performance in humid or chemical environments without rust or degradation.
  • Precise Class 6g thread fit guarantees smooth installation and secure fastening in metric assemblies, reducing assembly time and rework.
  • Hex socket drive with 2.5 mm key size allows for high-torque application and flush mounting in confined spaces, improving design flexibility.
  • Wide temperature tolerance from -20° to 180° F maintains integrity in varied operating conditions, from cold storage to moderate heat exposure.
  • 4500 psi tensile strength provides sufficient mechanical holding power for lightweight industrial and electronic applications.
  • Compliance with DIN 912, RoHS 3, and REACH ensures adherence to international standards for safety, material quality, and environmental responsibility.
  • Fully threaded M3 x 0.5 mm coarse pitch design offers consistent grip along the entire length, enhancing load distribution and vibration resistance.

Professional Applications & Engineering Value

Engineered for precision fastening in sectors like electronics, automotive interiors, and medical devices, this M3 socket head cap screw addresses common challenges such as galvanic corrosion and weight reduction. The polypropylene plastic material is inherently non-conductive and lightweight, eliminating the risk of short circuits while reducing overall assembly mass. With a standard hex drive and coarse metric thread, it ensures quick installation and reliable retention in plastic or soft metal housings, minimizing stripping and thread damage. Its off-white color and DIN 912 compliance make it ideal for applications requiring aesthetic consistency and dimensional accuracy, supporting efficient production lines and long-term durability in controlled environments.

Specification Summary & Compliance

This metric screw features M3 x 0.5 mm coarse threads with a Class 6g tolerance for precise fit, fully threaded design, and a socket head diameter of 5.5 mm. It conforms to DIN 912 standards for dimensional consistency and is manufactured to meet UL 94 HB flammability ratings. The product is verified as RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it is free of hazardous substances and suitable for global industrial use.

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