5310-01-266-0581

Find complete technical information, availability, and procurement data for: 5310-01-266-0581
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-266-0581

Item Name Code

01857

Assigment Date

10/20/1987 (38 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.)

2b thread class, 1.031 inches minimum and 1.062 inches maximum width across flats, hexagon nut style, unc thread series, 0.587 inches minimum and 0.631 inches maximum 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
Nut Style: hexagon
Nut Height: 0.587 inches minimum and 0.631 inches maximum
Width Across Flats: 1.031 inches minimum and 1.062 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 11
Nominal Thread Size: 0.625 inches
Hole Configuration Style: configuration b
Material: copper alloy 651 or copper alloy 655 overall
Material Document And Classification: qq-c-591,alloy 651 fed spec 1st material response or qq-c-591,alloy 655 fed spec 2nd material 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
2 122 2 00 904-07	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-266-0581?

The FSCG of the NSN 5310-01-266-0581 is 5310

Does the NSN 5310-01-266-0581 have a Schedule B code assigned?

Yes, the Schedule B code is 7415290000

Does NSN 5310-01-266-0581 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 5310-01-266-0581 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-266-0581 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 5310-01-266-0581 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Tue, Oct 20, 1987