5310-00-003-3888

Find complete technical information, availability, and procurement data for: 5310-00-003-3888
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-003-3888

Item Name Code

16979

Assigment Date

05/19/1972 (54 years ago)

A nut, flat on top and bottom, having eight flat sides. It may include a retaining dowel pin. 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).

2.375 inches nominal width across flats, 3b thread class, right-hand thread direction, 0.312 inches nominal nut height, plain, octagon nut style

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
Nut Style: plain, octagon
Nut Height: 0.312 inches nominal
Width Across Flats: 2.375 inches nominal
Thread Series: unj
Thread Quantity Per Inch: 12
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum
Nominal Thread Size: 1.938 inches
Countersink Angle: 90.0 degrees nominal nut
Bearing Surface Type: chamfered
Bearing Surface Finish: 125.0 microinches
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp 630 overall
Material Document And Classification: ams 5643 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Test Data Document: "81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

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
A51B20528-11	Octagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-003-3888?

The FSCG of the NSN 5310-00-003-3888 is 5310

Does the NSN 5310-00-003-3888 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-003-3888 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 5310-00-003-3888 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-003-3888 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 5310-00-003-3888 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, May 19, 1972