5305-00-638-0812

Find complete technical information, availability, and procurement data for: 5305-00-638-0812
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-638-0812

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

0.595 inches minimum and 0.670 inches maximum thread length, right-hand thread direction, 3a thread class, flat countersunk head style, 1.860 inches minimum and 1.905 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: 0.595 inches minimum and 0.670 inches maximum
Fastener Length: 1.860 inches minimum and 1.905 inches maximum
Head Style: flat countersunk
Head Diameter: 0.692 inches minimum and 0.766 inches maximum
Internal Drive Style: cross recess type ii
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp 4037 or steel comp 8630
Screw Material Document And Classification: ams 6300 assn std 1st material response or mil-s-6050 mil spec 2nd material response or sae assn std single material response
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response
Thread Series Designator: unf
Specification/Standard Data: 80205-nas517 professional/industrial association standard
Departure From Cited Designator: asmodified by metallic hardness rating

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-827-4426	No Name Available	05/20/1966

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
NAS517-6-20	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-638-0812?

The FSCG of the NSN 5305-00-638-0812 is 5305

Does the NSN 5305-00-638-0812 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-638-0812 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 5305-00-638-0812 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-638-0812 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 5305-00-638-0812 was assigned to the Federal Catalog?

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