HW51131-3

View detailed technical data, stock status, and sourcing information for: HW51131-3
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-260-9379

Item Name Code

29730

Assigment Date

08/07/1987 (39 years ago)

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

3b thread class, 0.363 inches nominal washer outside diameter, 0.216 inches nominal overall height, prevailing torque all metal design locking feature, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Washer Outside Diameter: 0.363 inches nominal
Overall Height: 0.216 inches nominal
Nut Style: hexagon
Width Across Flats: 0.213 inches minimum and 0.221 inches maximum
Temp Rating: 900.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Special Features: non-magnetic
Material: iron alloy 660 overall
Precious Material: silver
Surface Treatment: passivate washer
Surface Treatment: silver nut

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
HW51131-3	Extended Washer Self-Locking Nut

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-01-260-9379?

The FSCG of the NSN 5310-01-260-9379 is 5310

Does the NSN 5310-01-260-9379 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-260-9379 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-01-260-9379 contain precious materials?

Item contains silver.

Does NSN 5310-01-260-9379 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-01-260-9379 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Aug 7, 1987