91257A758

View detailed technical data, stock status, and sourcing information for: 91257A758
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-516-6271

Item Name Code

18257

Assigment Date

01/13/2004 (22 years ago)

An adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. The other end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. It is designed to join a pipe or pipe fitting to a tube or tube fitting in a straight line.

hexagon head style, right-hand thread direction, 5.000 inches nominal fastener length, fine thread class, 1.250 inches nominal 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: fine
Thread Direction: right-hand
Thread Length: 1.250 inches nominal
Fastener Length: 5.000 inches nominal
Head Style: hexagon
Head Height: 0.313 inches nominal
Width Between Flats: 0.750 inches nominal
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 20
Part Name Assigned By Controlling Agency: cap screw
Special Features: grade 8, 0.500 in fastener diameter, rockwell hardness c33-39, 150000psi minimum tensile strength
Material: steel 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
91257A758	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-516-6271?

The FSCG of the NSN 5305-01-516-6271 is 5305

Does the NSN 5305-01-516-6271 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-516-6271 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 5305-01-516-6271 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-516-6271 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 5305-01-516-6271 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Tue, Jan 13, 2004