5305-01-187-8551

Find complete technical information, availability, and procurement data for: 5305-01-187-8551
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-187-8551

Item Name Code

18257

Assigment Date

08/27/1984 (41 years ago)

hexagon extended washer head style, 2.000 inches nominal fastener length, right-hand thread direction, 1.250 inches nominal thread length, 2a 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: 2a
Thread Direction: right-hand
Thread Length: 1.250 inches nominal
Fastener Length: 2.000 inches nominal
Head Style: hexagon extended washer
Head Height: 0.498 inches nominal
Width Between Flats: 0.750 inches nominal
Extended Washer Diameter: 1.061 inches nominal
Extended Washer Thickness: 0.080 inches nominal
End Item Identification: mrap
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 20
Part Name Assigned By Controlling Agency: bolt, flanged hx heade
Material: steel overall
Thread Series Designator: unrf

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
414054C1	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-187-8551?

The FSCG of the NSN 5305-01-187-8551 is 5305

Does the NSN 5305-01-187-8551 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5305-01-187-8551 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 5305-01-187-8551 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-187-8551 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 5305-01-187-8551 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Mon, Aug 27, 1984