53251-404

View detailed technical data, stock status, and sourcing information for: 53251-404
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-145-2127

Item Name Code

01857

Assigment Date

01/07/1983 (43 years ago)

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

2b thread class, right-hand thread direction, 0.188 inches nominal width across flats, 0.375 inches nominal 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: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.375 inches nominal
Width Across Flats: 0.188 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 40
Nominal Thread Size: 0.112 inches
Bearing Surface Type: flat
Material: aluminum alloy 2011 overall
Material Document And Classification: qq-a-225/3,t3 fed spec single material response overall
Surface Treatment: anodize overall
Surface Treatment Document And Classification: mil-a-8625,type 2 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
53251-404	Hexagon Plain Nut
8104-A-0440-1B	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-145-2127?

The FSCG of the NSN 5310-01-145-2127 is 5310

Does the NSN 5310-01-145-2127 have a Schedule B code assigned?

Yes, the Schedule B code is 7616995195

Does NSN 5310-01-145-2127 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 5310-01-145-2127 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-145-2127 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 5310-01-145-2127 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Fri, Jan 7, 1983