5305-00-808-3981

Find complete technical information, availability, and procurement data for: 5305-00-808-3981
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-808-3981

Item Name Code

29294

Assigment Date

01/01/1963 (63 years ago)

3a thread class, 1.203 inches minimum and 1.250 inches maximum fastener length, 0.656 inches minimum thread length, right-hand thread direction, flat countersunk head style

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: 0.656 inches minimum
Fastener Length: 1.203 inches minimum and 1.250 inches maximum
Head Style: flat countersunk
Head Diameter: 0.881 inches minimum and 0.888 inches maximum
Grip Diameter: 0.4360 inches minimum and 0.4370 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.437 inches
Grip Length: 0.562 inches nominal
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
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 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 fed spec all treatment responses overall
Thread Series Designator: unf
Specification/Standard Data: 80205-nas587 professional/industrial association standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-638-9694	No Name Available	01/01/1961

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
HT7M9	Close Tolerance Screw
NAS587-9	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-808-3981?

The FSCG of the NSN 5305-00-808-3981 is 5305

Does the NSN 5305-00-808-3981 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-808-3981 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 5305-00-808-3981 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-808-3981 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 5305-00-808-3981 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963