5305-01-020-5243

Find complete technical information, availability, and procurement data for: 5305-01-020-5243
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-020-5243

Item Name Code

18257

Assigment Date

04/30/1976 (50 years ago)

2a thread class, 11.376 inches minimum and 11.402 inches maximum fastener length, right-hand thread direction, hexagon extended washer head style, 1.420 inches minimum and 1.480 inches maximum thread 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
Thread Length: 1.420 inches minimum and 1.480 inches maximum
Fastener Length: 11.376 inches minimum and 11.402 inches maximum
Head Style: hexagon extended washer
Head Height: 0.560 inches nominal
Width Between Flats: 0.554 inches minimum and 0.562 inches maximum
Extended Washer Diameter: 0.990 inches minimum and 1.010 inches maximum
Extended Washer Thickness: 0.180 inches nominal
Nominal Thread Diameter: 0.625 inches
Thread Quantity Per Inch: 18
Surface Finish: 63.0 microinches bearing surface of head
Material: steel 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
3275432	Hexagon Head Cap Screw
551690	Hexagon Head Cap Screw
556507	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-020-5243?

The FSCG of the NSN 5305-01-020-5243 is 5305

Does the NSN 5305-01-020-5243 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-020-5243 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 5305-01-020-5243 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-020-5243 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 5305-01-020-5243 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Fri, Apr 30, 1976