421-4-25184-000

View detailed technical data, stock status, and sourcing information for: 421-4-25184-000
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-258-6042

Item Name Code

01857

Assigment Date

07/05/1987 (39 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes:thrust type washer.

2b thread class, right-hand thread direction, hexagon nut style, 4.0 millimeters nominal width across flats, 1.6 millimeters nominal 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
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 1.6 millimeters nominal
Width Across Flats: 4.0 millimeters nominal
Thread Series: m
Nominal Thread Size: 2.0 millimeters
Thread Pitch In Millimeters: 0.40
Bearing Surface Type: chamfered
Thread Tolerance Class: 6h internal
Material: steel overall
Surface Treatment: zinc and chromate 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
34000652-2002	Hexagon Plain Nut
421-4-25184-000	Hexagon Plain Nut
L200P7B91	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-258-6042?

The FSCG of the NSN 5310-01-258-6042 is 5310

Does the NSN 5310-01-258-6042 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-258-6042 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 5310-01-258-6042 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-258-6042 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 5310-01-258-6042 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sun, Jul 5, 1987