7X3

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-022-0066

Item Name Code

01857

Assigment Date

01/01/1963 (63 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. 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.)

hexagon nut style, 0.312 inches nominal nut height, right-hand thread direction, 2b thread class, 0.625 inches nominal width across flats

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: hexagon
Nut Height: 0.312 inches nominal
Width Across Flats: 0.625 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.375 inches
Bearing Surface Type: washer faced
Material: steel overall
Material Document And Classification: qq-s-633-canc fed spec single material response overall
Nondefinitive Spec/Std Data: a 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
220066	Hexagon Plain Nut
3-22	Hexagon Plain Nut
3-8V	Hexagon Plain Nut
5225910	Hexagon Plain Nut
5310-022-0066	Hexagon Plain Nut
79323H	Hexagon Plain Nut
7X3	Hexagon Plain Nut
7XH3	Hexagon Plain Nut
99-110-03	Hexagon Plain Nut
A225910	Hexagon Plain Nut
BBAX1C	Hexagon Plain Nut
S871	Hexagon Plain Nut
X4-28	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-022-0066?

The FSCG of the NSN 5310-00-022-0066 is 5310

Does the NSN 5310-00-022-0066 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-022-0066 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 5310-00-022-0066 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-022-0066 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 5310-00-022-0066 was assigned to the Federal Catalog?

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