S-90205A353 M4 Hex Nuts

Hex Nuts

0971FA00020 Hex Nuts
0971FA00020 Hex Nuts

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

Part No.
Part No. 0971FA00020
Equivalent to mcmaster :
90205A353

Basic Information

System of Measurement Metric
Nut Type Hex

Dimension Parameters

Width 7 mm
Height 2.9 mm

Thread Parameters

Thread Type Metric
Thread Size M4
Thread Direction Right Hand
Thread Pitch 0.7 mm
Thread Spacing Coarse
Thread Fit Class 6H

Head Parameters

Drive Style External Hex
Hex Nut Profile Narrow

Material & Strength Parameters

Material Black-Oxide 316 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with Black-Oxide 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
  • Precise thread engagement with Class 6H thread fit ensuring reliable, vibration-resistant connections in metric assemblies
  • Optimized for space-constrained applications thanks to the narrow hex profile design
  • Quick and easy installation with standard external hex drive compatible with common wrenches
  • Enhanced durability in demanding conditions from the coarse 0.7mm pitch providing robust thread strength
  • Full regulatory compliance meeting RoHS 3 and REACH standards for safe use in industrial and export markets
  • Reliable right-hand threading for standard assembly procedures and maintenance operations

Professional Applications & Engineering Value

This M4 hex nut delivers exceptional performance in demanding industrial settings where corrosion resistance and mechanical reliability are critical. The Black-Oxide 316 Stainless Steel provides superior protection against oxidation, chemicals, and marine environments, significantly extending service life in applications from chemical processing equipment to marine hardware. The Class 6H thread fit ensures precise mating with corresponding bolts, minimizing loosening under vibration while the coarse 0.7mm pitch offers excellent engagement strength. The narrow hex profile makes it particularly valuable in compact assemblies and tight spaces where standard nuts cannot fit, while maintaining full compatibility with metric external hex drive tools for efficient installation and maintenance.

Specification Summary & Compliance

This metric hex nut features M4 x 0.7mm coarse thread with Class 6H thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. The narrow profile measures 7mm width and 2.9mm height. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and restricted substance compliance for global industrial applications.

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