S-94407A109 3-48 Locknuts

Locknuts

1146FA00046 Locknuts
1146FA00046 Locknuts

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

Part No.
Part No. 1146FA00046
Equivalent to mcmaster :
94407A109

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex

Dimension Parameters

Width 1/4"
Height 9/64"

Thread Parameters

Thread Type UNC
Thread Size 3-48
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material Black-Oxide 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

  • Superior vibration resistance through precision-engineered nylon insert that maintains locking force in dynamic applications
  • Enhanced corrosion protection with black-oxide coating on 18-8 stainless steel for extended service life in harsh environments
  • Reliable high-temperature performance with nylon insert rated for continuous operation up to 220°F (104°C)
  • Precise thread engagement with Class 2B thread fit ensuring consistent torque values and secure fastening
  • Industry-standard compatibility with UNC coarse threads matching common industrial equipment and components
  • Easy installation and removal using standard wrench tools with external hex drive design
  • Environmental compliance assurance meeting RoHS 3 and REACH standards for global manufacturing requirements

Professional Applications & Engineering Value

These nylon insert locknuts deliver critical vibration resistance in demanding industrial environments where loosening under dynamic loads poses significant safety and performance risks. The black-oxide 18-8 stainless steel construction provides dual protection against corrosion while maintaining structural integrity. The UNC coarse thread design ensures rapid assembly in production settings while the nylon insert creates consistent friction locking that doesn't compromise the parent material. Ideal for automotive assemblies, machinery frames, electrical enclosures, and transportation equipment, these locknuts maintain their clamping force through thermal cycling and mechanical stress, reducing maintenance frequency and preventing costly downtime from fastener failure.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNC standards with 3-48 thread size and coarse thread spacing. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. Physical dimensions include 1/4" width across flats and 9/64" height. The right-hand thread direction and external hex drive style conform to industry standards for compatibility with common installation tools and procedures.

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