5305-01-691-6444

Find complete technical information, availability, and procurement data for: 5305-01-691-6444
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-691-6444

Item Name Code

06657

Assigment Date

10/21/2020 (5 years ago)

A straight tube fitting capable of being taken apart and reassembled. It permits disconnection and connection of tubing or tube fittings without disturbing the end connections or the rest of the line.

2a thread class, 0.775 inches minimum and 0.875 inches maximum thread length, flat countersunk head style, right-hand thread direction, 0.875 inches nominal 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: 0.775 inches minimum and 0.875 inches maximum
Fastener Length: 0.875 inches nominal
Head Style: flat countersunk
Head Diameter: 0.452 inches minimum and 0.507 inches maximum
Internal Drive Style: cross recess type 1
End Item Identification: adapter assy
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 80000 pounds per square inch
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Part Name Assigned By Controlling Agency: screw, machine, flat countersunk head
Screw Material: steel comp 316
Screw Surface Treatment: passivate
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
MS51959-82S316	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-691-6444?

The FSCG of the NSN 5305-01-691-6444 is 5305

Does the NSN 5305-01-691-6444 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-691-6444 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 5305-01-691-6444 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-691-6444 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 5305-01-691-6444 was assigned to the Federal Catalog?

It was assigned 5 years ago, on Wed, Oct 21, 2020