SM-B-978773

View detailed technical data, stock status, and sourcing information for: SM-B-978773
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-407-4750

Item Name Code

06672

Assigment Date

01/30/1995 (31 years ago)

A locking device with two keys spaced approximately 180 degrees center to center and protruding from the seating surface of the ring. When installed the keys mate with companion keyways in the external threads of screw thread inserts, locked-in studs, or similar type items, and cut through sufficient threads of the parent material tapped hole to provide a positive lock between the threaded bodies.

headless (setscrew) head style, cup point style, right-hand thread direction, 0.052 inches minimum and 0.062 inches maximum fastener length, 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
Fastener Length: 0.052 inches minimum and 0.062 inches maximum
Head Style: headless (setscrew)
Point Style: cup
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.086 inches
Width Across Flats: 0.035 inches nominal
Thread Quantity Per Inch: 56
Material: steel comp 303 overall
Material Document And Classification: astm a 582, cond a, cold finish assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: astm a380 assn std single treatment response overall
Thread Series Designator: unc

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
SM-B-978773	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-01-407-4750?

The FSCG of the NSN 5305-01-407-4750 is 5305

Does the NSN 5305-01-407-4750 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-407-4750 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 5305-01-407-4750 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-407-4750 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 5305-01-407-4750 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Mon, Jan 30, 1995