5305-00-958-9946

Find complete technical information, availability, and procurement data for: 5305-00-958-9946
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-958-9946

Item Name Code

18257

Assigment Date

05/20/1966 (60 years ago)

2.250 inches minimum and 2.562 inches maximum thread length, right-hand thread direction, hexagon head style, 2a thread class, 4.500 inches nominal fastener 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: 2.250 inches minimum and 2.562 inches maximum
Fastener Length: 4.500 inches nominal
Head Style: hexagon
Head Height: 0.591 inches minimum and 0.627 inches maximum
Width Between Flats: 1.469 inches minimum and 1.500 inches maximum
Nominal Thread Diameter: 1.000 inches
Thread Quantity Per Inch: 8
Minimum Tensile Strength: 110000 pounds per square inch
Hardness Rating: 22.0 rockwell c minimum and 32.0 rockwell c maximum overall
Minimum Yield Strength: 78000 pounds per square inch
Material: steel overall
Material Document And Classification: sae gr 5 assn std single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2 cl 2 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-577-5594	No Name Available	01/16/1967
5305-00-589-6156	No Name Available	02/13/1967

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
145-4510917M1	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-958-9946?

The FSCG of the NSN 5305-00-958-9946 is 5305

Does the NSN 5305-00-958-9946 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-958-9946 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 5305-00-958-9946 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-958-9946 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 5305-00-958-9946 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, May 20, 1966