5305-00-950-8521

Find complete technical information, availability, and procurement data for: 5305-00-950-8521
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-950-8521

Item Name Code

18257

Assigment Date

01/01/1962 (64 years ago)

1.125 inches minimum and 1.312 inches maximum thread length, 2a thread class, hexagon head style, 2.500 inches nominal fastener length, right-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: 2a
Thread Direction: right-hand
Thread Length: 1.125 inches minimum and 1.312 inches maximum
Fastener Length: 2.500 inches nominal
Head Style: hexagon
Head Height: 0.272 inches minimum and 0.291 inches maximum
Width Between Flats: 0.612 inches minimum and 0.625 inches maximum
Nominal Thread Diameter: 0.438 inches
Thread Quantity Per Inch: 14
Minimum Tensile Strength: 80000 pounds per square inch
Material: steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-660-2707	No Name Available	10/01/1982
5306-00-771-7235	No Name Available	01/15/1971

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
400132-513	Hexagon Head Cap Screw
470466PC125	Hexagon Head Cap Screw
470467PCLN107	Hexagon Head Cap Screw
MS35307-393	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-950-8521?

The FSCG of the NSN 5305-00-950-8521 is 5305

Does the NSN 5305-00-950-8521 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-950-8521 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 5305-00-950-8521 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-950-8521 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 5305-00-950-8521 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962