M1643

View detailed technical data, stock status, and sourcing information for: M1643
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-019-5863

Item Name Code

06672

Assigment Date

01/01/1963 (63 years ago)

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

0.500 inches minimum thread length, right-hand thread direction, 0.750 inches nominal fastener length, hexagon head style, 3a thread class

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: 0.500 inches minimum
Fastener Length: 0.750 inches nominal
Head Style: hexagon
Head Height: 0.062 inches nominal
Width Between Flats: 0.125 inches nominal
Point Length: 0.250 inches nominal
Point Style: ball
Internal Drive Style: w/o internal drive
Nominal Thread Diameter: 0.099 inches
Thread Quantity Per Inch: 56
Material: copper alloy overall
Material Document And Classification: qq-b-626 fed spec single material response overall
Thread Series Designator: unf

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
M1643	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-00-019-5863?

The FSCG of the NSN 5305-00-019-5863 is 5305

Does the NSN 5305-00-019-5863 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-00-019-5863 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 5305-00-019-5863 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-019-5863 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 5305-00-019-5863 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963