5305-01-139-4798

Find complete technical information, availability, and procurement data for: 5305-01-139-4798
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-139-4798

Item Name Code

06672

Assigment Date

10/03/1982 (43 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.

right-hand thread direction, 0.250 inches nominal fastener length, headless (setscrew) head style, 2a thread class, 0.250 inches nominal thread 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: 2a
Thread Direction: right-hand
Thread Length: 0.250 inches nominal
Fastener Length: 0.250 inches nominal
Head Style: headless (setscrew)
Spline Minor Diameter: 0.078 inches minimum and 0.079 inches maximum
Spline Major Diameter: 0.097 inches minimum and 0.098 inches maximum
Spline Width: 0.021 inches minimum and 0.022 inches maximum
Point Style: oval
Internal Drive Style: six spline
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 36
Material: steel corrosion resisting 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
SM-B-283170	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-01-139-4798?

The FSCG of the NSN 5305-01-139-4798 is 5305

Does the NSN 5305-01-139-4798 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-139-4798 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 5305-01-139-4798 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-139-4798 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 5305-01-139-4798 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Sun, Oct 3, 1982