124D91

View detailed technical data, stock status, and sourcing information for: 124D91
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-514-8821

Item Name Code

29730

Assigment Date

01/01/1961 (65 years ago)

prevailing torque all metal design locking feature, 0.740 inches minimum and 0.760 inches maximum washer outside diameter, right-hand thread direction, 3b thread class, 0.390 inches minimum and 0.410 inches maximum overall height

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: 0.740 inches minimum and 0.760 inches maximum
Overall Height: 0.390 inches minimum and 0.410 inches maximum
Nut Style: hexagon
Washer Thickness: 0.050 inches minimum and 0.070 inches maximum
Width Across Flats: 0.493 inches minimum and 0.500 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 24
Hardness Rating: 19.0 rockwell c minimum and 26.0 rockwell c maximum
Nominal Thread Size: 0.312 inches
Material: steel comp 8740 or steel comp 4140 overall
Material Document And Classification: ams 6322 assn std 1st material response or ams 6382 assn std 2nd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams 2400 assn std single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-350-4063	No Name Available	01/01/1963

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
124D91	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-514-8821?

The FSCG of the NSN 5310-00-514-8821 is 5310

Does the NSN 5310-00-514-8821 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-514-8821 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 5310-00-514-8821 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-514-8821 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 5310-00-514-8821 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961