5305-01-078-1189

Find complete technical information, availability, and procurement data for: 5305-01-078-1189
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-078-1189

Item Name Code

18257

Assigment Date

06/09/1979 (47 years ago)

A rigid metal item usually fabricated from steel castings and/or welded steel pieces and designed with one or more hole(s) in line to accompany and hold, align, or support a nonrotating mechanical shaft. It has mounting holes for fastening to a supporting member or main body. It may have provision to accommodate a pin or threaded fastener to hold the shaft in a fixed position.

3a thread class, hexagon head style, 2.500 inches nominal thread length, 2.690 inches nominal fastener length, left-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: 3a
Thread Direction: left-hand
Thread Length: 2.500 inches nominal
Fastener Length: 2.690 inches nominal
Head Style: hexagon
Head Height: 0.310 inches nominal
Width Between Flats: 0.562 inches nominal
End Item Identification: m1
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 32
Special Features: right hand thread5/16-32unef-3a
Material: steel comp 4130 overall
Thread Series Designator: unef

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
12282046	Hexagon Head Cap Screw
5305010781189	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-078-1189?

The FSCG of the NSN 5305-01-078-1189 is 5305

Does the NSN 5305-01-078-1189 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-078-1189 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 5305-01-078-1189 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-078-1189 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 5305-01-078-1189 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Sat, Jun 9, 1979