5305-00-959-2680

Find complete technical information, availability, and procurement data for: 5305-00-959-2680
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-959-2680

Item Name Code

06657

Assigment Date

01/01/1960 (66 years ago)

right-hand thread direction, 1.750 inches nominal fastener length, 2a thread class, flat countersunk head style, 1.667 inches minimum and 1.750 inches maximum thread 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: 1.667 inches minimum and 1.750 inches maximum
Fastener Length: 1.750 inches nominal
Head Style: flat countersunk
Head Diameter: 0.340 inches minimum and 0.385 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 24
Minimum Tensile Strength: 55000 pounds per square inch
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Screw Material: steel comp 1010 or steel comp 1011 or steel comp 1013
Screw Material Document And Classification: 66 fed std all material responses
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

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-063-1225	No Name Available	09/01/2023
5305-00-844-1846	No Name Available	07/01/1986

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
MS35190-278	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-959-2680?

The FSCG of the NSN 5305-00-959-2680 is 5305

Does the NSN 5305-00-959-2680 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-959-2680 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 5305-00-959-2680 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-959-2680 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 5305-00-959-2680 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960