5305-01-257-3804

Find complete technical information, availability, and procurement data for: 5305-01-257-3804
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-257-3804

Item Name Code

06672

Assigment Date

06/17/1987 (39 years ago)

A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes:felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes:cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.

2a thread class, right-hand thread direction, 0.280 inches minimum and 0.300 inches maximum point length, headless (setscrew) head style, 0.660 inches nominal fastener length

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
Fastener Length: 0.660 inches nominal
Head Style: headless (setscrew)
Point Length: 0.280 inches minimum and 0.300 inches maximum
Point Diameter: 0.117 inches minimum and 0.122 inches maximum
Point Style: dog
Internal Drive Style: slot
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 24
Material: steel comp 304 overall
Material Document And Classification: qq-s-763 fed spec single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unf

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
750397	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-01-257-3804?

The FSCG of the NSN 5305-01-257-3804 is 5305

Does the NSN 5305-01-257-3804 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-257-3804 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 5305-01-257-3804 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-257-3804 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 5305-01-257-3804 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Wed, Jun 17, 1987