5305-00-958-9623

Find complete technical information, availability, and procurement data for: 5305-00-958-9623
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-958-9623

Item Name Code

06657

Assigment Date

05/23/1966 (60 years ago)

0.251 inches minimum and 0.301 inches maximum thread length, flat countersunk head style, right-hand thread direction, 2a thread class, 0.636 inches minimum and 0.666 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: 2a
Thread Direction: right-hand
Thread Length: 0.251 inches minimum and 0.301 inches maximum
Fastener Length: 0.636 inches minimum and 0.666 inches maximum
Head Style: flat countersunk
Head Diameter: 0.231 inches minimum and 0.279 inches maximum
Internal Drive Style: torque set
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
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 e4340 or steel comp 8740 or steel comp 8735 or steel comp 6150 or steel comp 4140 or steel comp 4037
Screw Surface Treatment: cadmium and chromate
Screw Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec all treatment responses
Thread Series Designator: unc

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
NAS1621-6	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-958-9623?

The FSCG of the NSN 5305-00-958-9623 is 5305

Does the NSN 5305-00-958-9623 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-958-9623 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 5305-00-958-9623 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-958-9623 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 5305-00-958-9623 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Mon, May 23, 1966