R20518

View detailed technical data, stock status, and sourcing information for: R20518
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-012-0611

Item Name Code

01858

Assigment Date

01/01/1963 (63 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.)

square nut style, 2b thread class, 0.375 inches nominal width across flats, right-hand thread direction, 0.125 inches nominal nut 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: 2b
Thread Direction: right-hand
Nut Style: square
Nut Height: 0.125 inches nominal
Width Across Flats: 0.375 inches nominal
Thread Series: unf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Material: steel overall
Surface Treatment: cadmium or zinc overall
Nondefinitive Spec/Std Data: b type

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
105A28	Square Plain Nut
34141S7	Square Plain Nut
34141S7S8	Square Plain Nut
34141S8	Square Plain Nut
7324090	Square Plain Nut
76822	Square Plain Nut
8X794	Square Plain Nut
95027	Square Plain Nut
P18299	Square Plain Nut
R20518	Square Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-012-0611?

The FSCG of the NSN 5310-00-012-0611 is 5310

Does the NSN 5310-00-012-0611 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-012-0611 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 5310-00-012-0611 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-012-0611 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 5310-00-012-0611 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963