S-94830A122 1 1/4"-12 Locknuts

Locknuts

1186FA00003 Locknuts
1186FA00003 Locknuts

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

Part No.
Part No. 1186FA00003
Equivalent to mcmaster :
94830A122

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex

Dimension Parameters

Width 1 13/16"
Height 49/64"

Thread Parameters

Thread Type UNF
Thread Size 1 1/4"-12
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Thin

Material & Strength Parameters

Material Cadmium-Plated Steel

Finish & Compliance Parameters

Locking Type Flex-Top
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 innovative Flex-Top locking technology that maintains clamp load in high-stress environments
  • Enhanced corrosion protection with cadmium-plated steel construction for extended service life in harsh industrial conditions
  • Space-saving thin profile design (49/64" height) enables installation in confined spaces where standard nuts won't fit
  • Precise thread engagement with Class 2B thread fit ensures reliable performance and reduces cross-threading risks
  • Easy installation and removal using standard wrenches with the external hex drive (1 13/16" width)
  • Optimized for fine thread applications with 1 1/4"-12 UNF right-hand threading for superior load distribution
  • Consistent locking performance across temperature variations and repeated installation cycles

Professional Applications & Engineering Value

This thin profile locknut addresses critical challenges in industrial assembly where space constraints and vibration compromise joint integrity. The cadmium-plated steel construction provides exceptional corrosion resistance for outdoor equipment, machinery, and automotive applications exposed to moisture and chemicals. The Flex-Top locking mechanism creates consistent friction along the thread engagement, preventing loosening under dynamic loads without requiring additional locking components. With UNF fine threading and Class 2B thread fit, this locknut delivers precise torque transmission and reliable performance in precision equipment, heavy machinery, and structural applications where vibration resistance and dimensional accuracy are paramount.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2B thread fit precision and compliant with UNF (Unified National Fine) thread specifications. The external hex drive features standard 1 13/16" width compatibility with industrial tools. Dimensions include 1 1/4"-12 thread size with right-hand orientation and 49/64" height thin profile. Meets industry standards for quality and performance, with cadmium plating providing environmental protection in accordance with industrial coating requirements.

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