5305-01-256-0871

Find complete technical information, availability, and procurement data for: 5305-01-256-0871
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-256-0871

Item Name Code

18257

Assigment Date

05/31/1987 (39 years ago)

A terminal designed to be affixed, usually at one end, to a post, stud, chassis, or the like for mounting. It has provisions for attachment of wire(s) or similar electrical conductor(s) in order to establish an electrical connection and could require the use of tool(s) for attachment of wire. For post like terminals, see terminal stud. Excludes:clip, electrical; terminal, quick disconnect and terminal feedthru.

right-hand thread direction, 2a thread class, 1.000 inches nominal fastener length, 0.900 inches minimum and 1.000 inches maximum 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: 0.900 inches minimum and 1.000 inches maximum
Fastener Length: 1.000 inches nominal
Head Style: hexagon
Head Height: 0.281 inches nominal
Width Between Flats: 0.625 inches nominal
Nominal Thread Diameter: 0.438 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 120000 pounds per square inch
Hardness Rating: 23.0 rockwell c minimum and 32.0 rockwell c maximum overall
Special Features: blue coated
Material: steel comp 1040 overall
Material Document And Classification: sae gr 5 assn std single material response overall
Surface Treatment: dichromate zinc 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-01-186-7080	No Name Available	03/01/1992

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
807-310	Hexagon Head Cap Screw
907-310	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-256-0871?

The FSCG of the NSN 5305-01-256-0871 is 5305

Does the NSN 5305-01-256-0871 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-256-0871 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 5305-01-256-0871 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-256-0871 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 5305-01-256-0871 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sun, May 31, 1987