5310-01-266-3275

Find complete technical information, availability, and procurement data for: 5310-01-266-3275
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-266-3275

Item Name Code

01857

Assigment Date

10/23/1987 (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.)

right-hand thread direction, 0.433 inches minimum and 0.441 inches maximum width across flats, 0.472 inches minimum and 0.474 inches maximum nut height, 2b thread class, hexagon 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: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.472 inches minimum and 0.474 inches maximum
Width Across Flats: 0.433 inches minimum and 0.441 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Countersink Angle: 110.0 degrees minimum and 130.0 degrees maximum both ends
Bearing Surface Type: chamfered
Bearing Surface Finish: 32.0 microinches
Material: steel comp 303 or steel comp 304 or steel comp 321 overall
Material Document And Classification: aisi assn std all material responses overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec 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
251043-28	Hexagon Plain Nut
2510430-28	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-266-3275?

The FSCG of the NSN 5310-01-266-3275 is 5310

Does the NSN 5310-01-266-3275 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-266-3275 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 5310-01-266-3275 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-266-3275 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 5310-01-266-3275 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Oct 23, 1987