5305-00-263-8403

Find complete technical information, availability, and procurement data for: 5305-00-263-8403
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-263-8403

Item Name Code

29294

Assigment Date

07/15/1973 (53 years ago)

flat countersunk head style, 0.320 inches minimum and 0.370 inches maximum thread length, 3a thread class, right-hand thread direction, 0.455 inches minimum and 0.485 inches maximum fastener 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: 0.320 inches minimum and 0.370 inches maximum
Fastener Length: 0.455 inches minimum and 0.485 inches maximum
Head Style: flat countersunk
Head Diameter: 0.337 inches minimum and 0.383 inches maximum
Grip Diameter: 0.1885 inches minimum and 0.1895 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.190 inches
Grip Length: 0.115 inches minimum and 0.135 inches maximum
Thread Quantity Per Inch: 32
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: steel comp e4340 or steel comp 8740 overall
Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-6049rjgcams 6322 mil spec 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response overall
Thread Series Designator: unjf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-655-7672	No Name Available	11/01/1984

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
BACB30LU3-2	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-263-8403?

The FSCG of the NSN 5305-00-263-8403 is 5305

Does the NSN 5305-00-263-8403 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-263-8403 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 5305-00-263-8403 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-263-8403 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 5305-00-263-8403 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Sun, Jul 15, 1973