5305-00-257-3125

Find complete technical information, availability, and procurement data for: 5305-00-257-3125
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-257-3125

Item Name Code

18257

Assigment Date

03/26/1971 (55 years ago)

right-hand thread direction, 3.062 inches minimum and 3.250 inches maximum fastener length, 2a thread class, 2.458 inches minimum thread length, hexagon head style

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: 2.458 inches minimum
Fastener Length: 3.062 inches minimum and 3.250 inches maximum
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: 12
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Surface Finish: 63.0 microinches threads
Material: steel overall
Material Document And Classification: sae gr 8 assn std single material response overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single treatment response overall
Thread Series Designator: unf
Nondefinitive Spec/Std Data: 2 type and 10p style and 8 grade

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-958-8475	No Name Available	02/01/1998

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
5305PL0718098	Hexagon Head Cap Screw
AES01FA00C25AW9A91	Hexagon Head Cap Screw
B1821BH100F325N	Hexagon Head Cap Screw
MS90726-235	Hexagon Head Cap Screw
MS90727-235	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-257-3125?

The FSCG of the NSN 5305-00-257-3125 is 5305

Does the NSN 5305-00-257-3125 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-257-3125 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 5305-00-257-3125 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-257-3125 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 5305-00-257-3125 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Mar 26, 1971