15121000 ITEM 20

View detailed technical data, stock status, and sourcing information for: 15121000 ITEM 20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-389-2393

Item Name Code

22846

Assigment Date

04/20/1994 (32 years ago)

A part basically circular in shape, designed to cover or seal the filler-neck or inlet opening of a fuel tank, radiator, oil reservoir, liquid storage tank or the like. It may be either permanently attached to the object for which it is designed or provided with a means of removal and replacement. Excludes:cap, vent, fuel storage tank; and cover (1), (as modified).

2a thread class, 0.813 inches nominal fastener length, flat chamfer head style, 0.500 inches nominal thread length, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.500 inches nominal
Fastener Length: 0.813 inches nominal
Head Style: flat chamfer
Head Diameter: 0.563 inches nominal
Head Height: 0.250 inches nominal
Shoulder Diameter: 0.374 inches minimum and 0.375 inches maximum first shoulder
Shoulder Length: 0.313 inches minimum and 0.315 inches maximum first shoulder
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.188 inches nominal
Thread Quantity Per Inch: 18
Shoulder Shape: round first shoulder
Material: steel comp 416 overall
Thread Series Designator: unc

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
15121000 ITEM 20	Shoulder Screw
PZ-38	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-01-389-2393?

The FSCG of the NSN 5305-01-389-2393 is 5305

Does the NSN 5305-01-389-2393 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-389-2393 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 5305-01-389-2393 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-389-2393 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 5305-01-389-2393 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Wed, Apr 20, 1994