5305-01-256-5801

Find complete technical information, availability, and procurement data for: 5305-01-256-5801
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-256-5801

Item Name Code

33044

Assigment Date

06/06/1987 (39 years ago)

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

knurled no. 1 head style, 0.290 inches nominal head height, 0.420 inches nominal head diameter, 0.350 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 Direction: right-hand
Fastener Length: 0.350 inches nominal
Head Style: knurled no. 1
Head Diameter: 0.420 inches nominal
Head Height: 0.290 inches nominal
Internal Drive Style: slot
Material Accommodated Thickness: 0.087 inches minimum and 0.158 inches maximum
Nominal Thread Diameter: 4.0 millimeters
Thread Pitch In Millimeters: 0.7
External Thread Tolerance Class: 4h
Material: aluminum alloy 6061 stand-off
Material: steel comp 302 secondary washer
Material: steel comp 302 spring
Material: steel comp 301 primary washer
Material: steel corrosion resisting fastener
Surface Treatment: anodize stand-off
Surface Treatment: passivate fastener
Surface Treatment: passivate primary washer
Surface Treatment: passivate secondary washer
Surface Treatment: passivate spring
Thread Series Designator: m

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
91753488	Panel Screw Assembly
F7500-M4-B-2	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-256-5801?

The FSCG of the NSN 5305-01-256-5801 is 5305

Does the NSN 5305-01-256-5801 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-256-5801 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 5305-01-256-5801 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-256-5801 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 5305-01-256-5801 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, Jun 6, 1987