66743

View detailed technical data, stock status, and sourcing information for: 66743
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-929-9219

Item Name Code

06672

Assigment Date

09/14/1966 (59 years ago)

0.250 inches maximum thread length, right-hand thread direction, headless (setscrew) head style, 3a thread class, 0.250 inches nominal fastener length

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: 0.250 inches maximum
Fastener Length: 0.250 inches nominal
Head Style: headless (setscrew)
Locking Feature: patch or pellet or strip threads
Point Style: cup
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.138 inches
Width Across Flats: 0.062 inches minimum and 0.063 inches maximum
Thread Quantity Per Inch: 32
Hardness Rating: 33.0 rockwell c minimum and 40.0 rockwell c maximum overall
Material: steel comp 4037 or steel comp 4137 or steel comp 4140 or steel comp 8630 or steel comp 8740 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 type 2 class 3 fed spec all treatment responses 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-150-3203	No Name Available	12/01/1983
5305-00-829-9967	No Name Available	06/18/2014
5305-00-920-4106	No Name Available	09/01/2023

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
1611204-22	Setscrew
208A357G06	Setscrew
208A537G06	Setscrew
409788-1	Setscrew
66743	Setscrew
MS18063-11	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-00-929-9219?

The FSCG of the NSN 5305-00-929-9219 is 5305

Does the NSN 5305-00-929-9219 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-929-9219 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 5305-00-929-9219 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-929-9219 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 5305-00-929-9219 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Sep 14, 1966