5310-00-781-1221

Find complete technical information, availability, and procurement data for: 5310-00-781-1221
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-781-1221

Item Name Code

01857

Assigment Date

01/01/1961 (65 years ago)

0.039 inches nominal drilled hole diameter, right-hand thread direction, 3b thread class, 0.240 inches minimum and 0.260 inches maximum nut height, 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: 3b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.240 inches minimum and 0.260 inches maximum
Drilled Hole Diameter: 0.039 inches nominal
Hole Type And Quantity: 1 drilled
Width Across Flats: 0.338 inches nominal
Thread Series: unf
Thread Quantity Per Inch: 20
Nominal Thread Size: 0.500 inches
Hole Configuration Style: configuration b
Bearing Surface Type: chamfered
Material: aluminum alloy overall
Surface Treatment: oxide film overall
Surface Treatment Document And Classification: mil-c-5541 mil 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
5004-4	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-781-1221?

The FSCG of the NSN 5310-00-781-1221 is 5310

Does the NSN 5310-00-781-1221 have a Schedule B code assigned?

Yes, the Schedule B code is 7616995195

Does NSN 5310-00-781-1221 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 5310-00-781-1221 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-781-1221 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 5310-00-781-1221 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961