5310-00-982-4938

Find complete technical information, availability, and procurement data for: 5310-00-982-4938
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-982-4938

Item Name Code

01858

Assigment Date

01/01/1962 (64 years ago)

A nut, flat on top and bottom, having 4 flat sides. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

0.203 inches minimum and 0.235 inches maximum nut height, right-hand thread direction, square nut style, 0.425 inches minimum and 0.4375 inches maximum width across flats, 2b thread class

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Nut Style: square
Nut Height: 0.203 inches minimum and 0.235 inches maximum
Width Across Flats: 0.425 inches minimum and 0.4375 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 20
Hardness Rating: 103.0 brinell standard minimum
Nominal Thread Size: 0.250 inches
Bearing Surface Type: washer faced
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec 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Below is a list of NSNs that have been officially superseded by this NSN: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
5310-00-012-0372	No Name Available	12/01/1978
5310-00-208-1995	Square Plain Nut	07/01/2025
5310-00-275-5474	No Name Available	09/01/2023
5310-00-368-1908	No Name Available	05/28/1970

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
120372	Square Plain Nut
12135-6	Square Plain Nut
12136-8	Square Plain Nut
12137-6	Square Plain Nut
12140-5	Square Plain Nut
MS21304-1	Square Plain Nut
MS27040-10	Square Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-982-4938?

The FSCG of the NSN 5310-00-982-4938 is 5310

Does the NSN 5310-00-982-4938 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-982-4938 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 5310-00-982-4938 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-982-4938 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 5310-00-982-4938 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962