5305-01-558-7943

Find complete technical information, availability, and procurement data for: 5305-01-558-7943
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-558-7943

Item Name Code

18257

Assigment Date

11/21/2007 (18 years ago)

The upper, horizontal part of a step upon which the foot is placed, or a section placed upon or set into a deck, walkway, coaming and the like, made of metal, and corrugated or otherwise specially constructed to resist skidding. May have added material or inserts such as wood strip or abrasive particles to prevent sparking. Excludes:door saddle, floor plates, gratings and elevator sills.

2a thread class, 0.750 inches minimum and 1.000 inches maximum thread length, 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: 0.750 inches minimum and 1.000 inches maximum
Fastener Length: 2.500 inches nominal
Head Style: hexagon
Head Height: 0.156 inches nominal
Width Between Flats: 0.438 inches nominal
End Item Identification: apache attack helicopter; mrap buffalo mk2a2
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 33.0 rockwell c minimum and 39.0 rockwell c maximum overall
Part Name Assigned By Controlling Agency: hexhead cap screw
Special Features: sae j429 grade 8 zinc-plated alloy steel hex head cap screw
Color: yellow overall
Material: steel comp 429 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-01-557-2745	No Name Available	10/01/2014

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
91257A552	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-558-7943?

The FSCG of the NSN 5305-01-558-7943 is 5305

Does the NSN 5305-01-558-7943 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-558-7943 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 5305-01-558-7943 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-558-7943 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 5305-01-558-7943 was assigned to the Federal Catalog?

It was assigned 18 years ago, on Wed, Nov 21, 2007