AN507C420R12

View detailed technical data, stock status, and sourcing information for: AN507C420R12
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-274-0324

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

right-hand thread direction, 0.547 inches nominal thread length, 0.750 inches nominal fastener length, 2a thread class, flat countersunk head style

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: 0.547 inches nominal
Fastener Length: 0.750 inches nominal
Head Style: flat countersunk
Head Diameter: 0.462 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
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material Document And Classification: qq-s-763 cl iv fed spec 1st material response or mil-s-7720 comp fm or g mil spec 2nd material response
Screw Surface Treatment: passivate
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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-637-7039	No Name Available	01/01/1960

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
AN507C420R12	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-274-0324?

The FSCG of the NSN 5305-00-274-0324 is 5305

Does NSN 5305-00-274-0324 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 5305-00-274-0324 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-274-0324 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 5305-00-274-0324 was assigned to the Federal Catalog?

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