S-93625A550 M20 DIN 985 Locknuts

Locknuts

1147FA00028 Locknuts
1147FA00028 Locknuts

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

Part No.
Part No. 1147FA00028
Equivalent to mcmaster :
93625A550

Basic Information

System of Measurement Metric
Nut Type Locknut, Hex
Specifications Met DIN 985

Dimension Parameters

Width 30 mm
Height 20 mm

Thread Parameters

Thread Type Metric
Thread Size M20
Thread Direction Right Hand
Thread Pitch 2.5 mm
Thread Spacing Coarse
Thread Fit Class 6H

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Temperature & Environment Parameters

Insert Maximum Temperature 220°F

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant
Locking Type Nylon Insert
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Vibration-resistant locking with nylon insert that maintains secure fastening under dynamic loads
  • Corrosion-resistant performance thanks to 18-8 stainless steel construction for long service life
  • Precise thread engagement with Class 6H fit ensuring reliable mating with mating components
  • High-temperature capability with nylon insert rated for continuous service up to 220°F (104°C)
  • Standardized dimensions per DIN 985 specification for guaranteed interchangeability
  • Easy installation and removal with external hex drive design for standard wrench access
  • Environmental compliance meeting RoHS 3 and REACH regulations for global manufacturing

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M20 nylon insert lock nuts provide critical vibration resistance in machinery, automotive, and construction equipment where loosening under dynamic loads poses safety risks. The 18-8 stainless steel construction delivers excellent corrosion resistance in harsh environments, while the coarse metric thread with 2.5 mm pitch ensures rapid assembly and disassembly. The nylon insert locking mechanism creates consistent friction against the bolt thread, maintaining clamp force without damaging fastener surfaces. With DIN 985 compliance and Class 6H thread fit, these locknuts guarantee dimensional accuracy and reliable performance in critical metric fastener systems.

Specification Summary & Compliance

This M20 x 2.5 mm nylon insert lock nut features Class 6H thread tolerance with coarse thread spacing and right-hand thread direction. Manufactured to DIN 985 standards with dimensions of 30mm width and 20mm height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial applications.

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