5305-01-179-2439

Find complete technical information, availability, and procurement data for: 5305-01-179-2439
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-179-2439

Item Name Code

29294

Assigment Date

05/16/1984 (42 years ago)

flat countersunk head style, 3a thread class, 0.444 inches minimum and 0.494 inches maximum thread length, 1.016 inches minimum and 1.046 inches maximum fastener length, 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: 0.444 inches minimum and 0.494 inches maximum
Fastener Length: 1.016 inches minimum and 1.046 inches maximum
Head Style: flat countersunk
Head Diameter: 0.497 inches minimum and 0.507 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Shank Unthreaded Hole Diameter: 0.076 inches minimum and 0.081 inches maximum first hole
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.552 inches minimum and 0.572 inches maximum
Thread Quantity Per Inch: 28
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Distance From Head Largest Bearing Surface To Shank Hole Center: 0.895 inches minimum and 0.935 inches maximum first hole
Material: steel comp xm-13 overall
Material Document And Classification: ams 5629 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unjf

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
11905-4DL9	Close Tolerance Screw
HT4025L4D9	Close Tolerance Screw
ST3M454-4DL9	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-179-2439?

The FSCG of the NSN 5305-01-179-2439 is 5305

Does the NSN 5305-01-179-2439 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-179-2439 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 5305-01-179-2439 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-179-2439 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 5305-01-179-2439 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, May 16, 1984