5305-01-504-1556

Find complete technical information, availability, and procurement data for: 5305-01-504-1556
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-504-1556

Item Name Code

18257

Assigment Date

01/21/2003 (23 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

0.688 inches nominal fastener length, hexagon head style, 3a thread class, 0.656 inches minimum and 0.688 inches maximum thread 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: 3a
Thread Direction: right-hand
Thread Length: 0.656 inches minimum and 0.688 inches maximum
Fastener Length: 0.688 inches nominal
Head Style: hexagon
Head Height: 0.105 inches minimum and 0.120 inches maximum
Width Between Flats: 0.305 inches minimum and 0.314 inches maximum
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Special Features: has offset cruciform-ribbed recess internal drive style
Material: steel corrosion resisting overall
Material Document And Classification: ams5731 or ams5732 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unjf

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
NAS9103-11	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-504-1556?

The FSCG of the NSN 5305-01-504-1556 is 5305

Does the NSN 5305-01-504-1556 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-504-1556 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 5305-01-504-1556 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-504-1556 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 5305-01-504-1556 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Tue, Jan 21, 2003