G18421L6-4

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-011-3087

Item Name Code

01863

Assigment Date

10/20/1975 (50 years ago)

A nut having ears or lugs designed to hold it in position after its installation in a specially designed channel. An integral feature is incorporated for locking on the threads of a mating member.

dry film lubricant lubrication, prevailing torque all metal design locking feature, 3b thread class, right-hand thread direction, 0.254 inches minimum and 0.267 inches maximum nut counterbore diameter

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
Locking Feature: prevailing torque all metal design
Counterbore Diameter: 0.254 inches minimum and 0.267 inches maximum nut
Lubrication: dry film lubricant
Nut Style: gang channel, self locking
Base Width: 0.395 inches minimum and 0.405 inches maximum
Nut Length: 0.557 inches minimum and 0.567 inches maximum
Base Thickness: 0.040 inches minimum and 0.052 inches maximum
Nut Height: 0.559 inches maximum
Nut Counterbore Depth: 0.350 inches minimum nut
Thread Series: unjf
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
Special Features: dyed blue fed std 595 no. 15526
Material: iron alloy 660 overall
Material Document And Classification: ams 5525 assn std single material response or ams 5732 assn std single material response overall
Specification/Standard Data: 76301-st3-445 manufacturers standard

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
10121951	Gang Channel Self-Locking Nut
BCN445C4-6	Gang Channel Self-Locking Nut
F49249E4-6XN	Gang Channel Self-Locking Nut
G18421L6-4	Gang Channel Self-Locking Nut
NS103966S-048-6	Gang Channel Self-Locking Nut
ST3M445C4M6	Gang Channel Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-011-3087?

The FSCG of the NSN 5310-01-011-3087 is 5310

Does the NSN 5310-01-011-3087 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-011-3087 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 5310-01-011-3087 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-011-3087 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 5310-01-011-3087 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, Oct 20, 1975