S-94140A164 7/8"-14 Locknuts

Locknuts

1187FA00015 Locknuts
1187FA00015 Locknuts

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

Part No.
Part No. 1187FA00015
Equivalent to mcmaster :
94140A164

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex

Dimension Parameters

Width 1 1/4"
Height 31/64"

Thread Parameters

Thread Type UNF
Thread Size 7/8"-14
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 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/10/2022, 224 SVHC) Compliant
Locking Type Flex-Top
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
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Key Features & Benefits at a Glance

  • Superior vibration resistance through Flex-Top locking design that maintains secure fastening under dynamic loads
  • Excellent corrosion protection with 18-8 stainless steel construction for long service life in harsh environments
  • Space-saving thin profile (31/64" height) ideal for applications with limited clearance
  • Precise thread engagement with Class 2B fit ensuring reliable performance in UNF fine thread applications
  • Easy installation and removal using standard wrench tools with external hex drive design
  • Regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
  • Optimized for fine thread applications with 7/8"-14 UNF threading providing superior holding power

Professional Applications & Engineering Value

This 7/8"-14 UNF thin locknut delivers exceptional engineering value through its specialized Flex-Top locking mechanism and 18-8 stainless steel construction. The innovative flex-top design creates consistent radial pressure along the thread engagement, effectively resisting loosening from vibration and thermal cycling - a critical solution for machinery, automotive, and heavy equipment applications. The thin profile accommodates space-constrained assemblies while maintaining full locking performance. Manufactured from corrosion-resistant 18-8 stainless steel, this external hex locknut withstands demanding environmental conditions, making it ideal for marine, chemical processing, and outdoor industrial applications where reliability and durability are paramount.

Specification Summary & Compliance

This locknut features precision 7/8"-14 UNF fine threads with Class 2B thread fit for consistent engagement and reliable performance. The external hex drive measures 1 1/4" across flats with a 31/64" height thin profile. Manufactured to applicable industry standards, this fastener is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for industrial components.

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