5305-01-138-3279

Find complete technical information, availability, and procurement data for: 5305-01-138-3279
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-138-3279

Item Name Code

06672

Assigment Date

09/10/1982 (43 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, splined or smoothed, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

3a thread class, 0.365 inches minimum and 0.385 inches maximum thread length, 0.365 inches minimum and 0.385 inches maximum fastener length, headless (setscrew) head style, 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: 0.365 inches minimum and 0.385 inches maximum
Fastener Length: 0.365 inches minimum and 0.385 inches maximum
Head Style: headless (setscrew)
Point Style: cone
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.125 inches minimum and 0.127 inches maximum
Thread Quantity Per Inch: 28
Hardness Rating: 45.0 rockwell c minimum and 53.0 rockwell c maximum overall
Material: steel comp 4037 or steel comp 4137 or steel comp 8630 or steel comp 8740 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2 class 2 fed spec single treatment response overall
Thread Series Designator: unf
Nondefinitive Spec/Std Data: 1 type and 2 style

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
AN565B428H6	Setscrew

FAQs

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

What is the FSCG of the NSN 5305-01-138-3279?

The FSCG of the NSN 5305-01-138-3279 is 5305

Does the NSN 5305-01-138-3279 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-138-3279 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 5305-01-138-3279 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-138-3279 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 5305-01-138-3279 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Fri, Sep 10, 1982