5305-01-344-4479

Find complete technical information, availability, and procurement data for: 5305-01-344-4479
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-344-4479

Item Name Code

06657

Assigment Date

08/29/1991 (34 years ago)

An item usually metallic, threaded or unthreaded, used for securing to or positioning into a mating part. It is designed to be used in a globe, relief, regulator valve and the like as a means of controlling the flow of liquids or gases in a given system. One end may have an integral disk or be designed to accommodate a metallic or nonmetallic disk. The other end is designed for a handwheel, lever, spring, diaphragm and the like for nonpowered operation or to accommodate a gear, solenoid, air motor and the like for powered operation. The handwheel and/or disk may be furnished with the item. Excludes:stem, faucet; and stem, needle valve.

2.360 inches minimum and 2.390 inches maximum fastener length, pan head style, 3a thread class, right-hand thread direction, 0.375 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: 3a
Thread Direction: right-hand
Thread Length: 0.375 inches nominal
Fastener Length: 2.360 inches minimum and 2.390 inches maximum
Head Style: pan
Head Diameter: 0.594 inches minimum and 0.615 inches maximum
Head Height: 0.203 inches minimum and 0.218 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 160000 pounds per square inch
Screw Material: steel comp 4140 or steel comp e4340 or steel comp 8740
Screw Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-6049 mil spec 3rd material response
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416,ty 2 cl 2 fed spec single treatment response
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas623 professional/industrial association standard

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
NAS623-5-32	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-344-4479?

The FSCG of the NSN 5305-01-344-4479 is 5305

Does the NSN 5305-01-344-4479 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-344-4479 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 5305-01-344-4479 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-344-4479 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 5305-01-344-4479 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Thu, Aug 29, 1991