5305-01-221-3502

Find complete technical information, availability, and procurement data for: 5305-01-221-3502
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-221-3502

Item Name Code

18257

Assigment Date

11/28/1985 (40 years ago)

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

1.438 inches nominal fastener length, hexagon head style, right-hand thread direction, 1.000 inches minimum and 1.438 inches maximum thread length, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 1.000 inches minimum and 1.438 inches maximum
Fastener Length: 1.438 inches nominal
Head Style: hexagon
Head Height: 0.188 inches nominal
Width Between Flats: 0.500 inches nominal
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 18
Material: copper alloy 462 or copper alloy 464 or copper alloy 482 or copper alloy 485 overall
Material Document And Classification: astm b21 assn std all material responses 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
1305 ITEM 10	Hexagon Head Cap Screw
2665-P	Hexagon Head Cap Screw
42116-G	Hexagon Head Cap Screw
42116-H	Hexagon Head Cap Screw
42116-K	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-221-3502?

The FSCG of the NSN 5305-01-221-3502 is 5305

Does the NSN 5305-01-221-3502 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-01-221-3502 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 5305-01-221-3502 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-221-3502 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 5305-01-221-3502 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Nov 28, 1985