S-96345A765 7/16"-20 MS17830-7F, MS21044C7, NASM17830, NASM21044 Locknuts

Locknuts

1148FA00012 Locknuts
1148FA00012 Locknuts

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

Part No.
Part No. 1148FA00012
Equivalent to mcmaster :
96345A765

Basic Information

System of Measurement Inch
Nut Type Locknut, Hex
Specifications Met MS17830-7F, MS21044C7, NASM17830, NASM21044

Dimension Parameters

Width 11/16"
Height 15/32"

Thread Parameters

Thread Type UNF
Thread Size 7/16"-20
Thread Direction Right Hand
Thread Spacing Fine
Thread Fit Class 3B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Temperature & Environment Parameters

Insert Maximum Temperature 250°F

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 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 nylon insert locking mechanism that maintains secure fastening in high-stress environments
  • Excellent corrosion resistance provided by 18-8 stainless steel construction for extended service life in harsh conditions
  • Precision thread engagement with Class 3B fit ensuring reliable performance and reduced risk of cross-threading
  • High-temperature capability with nylon insert rated to 250°F for thermal stability in demanding applications
  • Industry-standard compliance meeting MS17830-7F, MS21044C7, NASM17830, and NASM21044 specifications for quality assurance
  • Easy installation and removal with external hex drive design allowing standard tool compatibility and efficient maintenance
  • Environmental compliance with REACH and RoHS 3 regulations for safe use across global industrial markets

Professional Applications & Engineering Value

This 7/16"-20 UNF nylon insert locknut delivers exceptional engineering value through its 18-8 stainless steel construction and precision Class 3B thread fit. The nylon insert locking mechanism effectively counters vibration-induced loosening, making it ideal for aerospace applications, heavy machinery, and industrial equipment where reliability is paramount. The fine thread configuration provides superior clamping force distribution, while the external hex drive ensures straightforward installation with standard tools. Engineered to withstand temperatures up to 250°F, this locknut maintains performance in thermal cycling environments, and its corrosion-resistant properties ensure longevity in challenging operating conditions, reducing maintenance frequency and total cost of ownership.

Specification Summary & Compliance

This locknut features precision 7/16"-20 UNF fine threads with Class 3B thread fit for exceptional dimensional accuracy. Manufactured in compliance with MS17830-7F, MS21044C7, NASM17830, and NASM21044 standards, ensuring consistent quality and performance. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Dimensions include 11/16" width and 15/32" height with right-hand thread direction, providing standardized compatibility across industrial applications.

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