5310-00-956-4721

Find complete technical information, availability, and procurement data for: 5310-00-956-4721
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-956-4721

Item Name Code

15887

Assigment Date

05/16/1966 (60 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.)

right-hand thread direction, 0.093 inches nominal drive point depth, round nut style, 3b thread class, 2.110 inches minimum and 2.130 inches maximum nut diameter

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
Drive Point Depth: 0.093 inches nominal
Nut Style: round
Nut Diameter: 2.110 inches minimum and 2.130 inches maximum
Nut Thickness: 0.271 inches minimum and 0.291 inches maximum
Drive Point Width: 0.178 inches minimum and 0.198 inches maximum
Drive Point Quantity: 8
Thread Series: unef
Features Provided: casehardened
Thread Quantity Per Inch: 18
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum
Nominal Thread Size: 1.375 inches
Material: steel comp 4140 overall
Material Document And Classification: ams 6381 assn std single material response or ams 6382 assn std single material response overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: ams 2481 assn std single treatment response overall

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
MS172335	Round Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-956-4721?

The FSCG of the NSN 5310-00-956-4721 is 5310

Does the NSN 5310-00-956-4721 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-956-4721 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 5310-00-956-4721 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-956-4721 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 5310-00-956-4721 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Mon, May 16, 1966