5305-00-781-3921

Find complete technical information, availability, and procurement data for: 5305-00-781-3921
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 5305-00-781-3921 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-781-3921

Item Name Code

06657

Assigment Date

01/01/1960 (66 years ago)

0.275 inches minimum and 0.375 inches maximum thread length, 0.375 inches nominal fastener length, right-hand thread direction, flat countersunk head style, 2a 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: 2a
Thread Direction: right-hand
Thread Length: 0.275 inches minimum and 0.375 inches maximum
Fastener Length: 0.375 inches nominal
Head Style: flat countersunk
Head Diameter: 0.442 inches minimum and 0.507 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 60000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material: steel comp 1010
Screw Material Document And Classification: qq-s-630 fed spec single material response or qq-s-631 fed spec single material response or qq-s-634 fed spec single material response
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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-754-1725	No Name Available	10/01/1982

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
MS24693S92	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-781-3921?

The FSCG of the NSN 5305-00-781-3921 is 5305

Does the NSN 5305-00-781-3921 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-781-3921 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 5305-00-781-3921 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-781-3921 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 5305-00-781-3921 was assigned to the Federal Catalog?

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