5305-00-637-7797

Find complete technical information, availability, and procurement data for: 5305-00-637-7797
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-637-7797

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

flat countersunk head style, 0.414 inches minimum and 0.577 inches maximum thread length, right-hand thread direction, 1.016 inches minimum and 1.062 inches maximum fastener length, 3a thread class

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: 0.414 inches minimum and 0.577 inches maximum
Fastener Length: 1.016 inches minimum and 1.062 inches maximum
Head Style: flat countersunk
Head Diameter: 0.393 inches minimum and 0.407 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum
Countersink Angle: 100.0 degrees nominal
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 an-s-9 mil std 2nd material response
Screw Surface Treatment: passivate
Screw Surface Treatment Document And Classification: 171,finish no. 5.4.1 mil std single treatment response
Thread Series Designator: unf

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
CVC128-416R16	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-637-7797?

The FSCG of the NSN 5305-00-637-7797 is 5305

Does the NSN 5305-00-637-7797 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-637-7797 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 5305-00-637-7797 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-637-7797 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 5305-00-637-7797 was assigned to the Federal Catalog?

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