5305-00-721-4761

Find complete technical information, availability, and procurement data for: 5305-00-721-4761
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-721-4761

Item Name Code

16282

Assigment Date

01/01/1963 (63 years ago)

"a fastening device formed from resilient wire stock into a shape resembling the letter "u", of which at least one of the prongs is straight for insertion into a hole; the other prong may have one or more curvatures along its length. It is designed to hold itself in place by its inherent spring action. See also clip, retaining and ring, retaining."

flat chamfer head style, 1.250 inches maximum thread length, 3a thread class, 1.250 inches nominal fastener length, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 1.250 inches maximum
Fastener Length: 1.250 inches nominal
Head Style: flat chamfer
Head Diameter: 0.553 inches minimum and 0.562 inches maximum
Head Height: 0.368 inches minimum and 0.375 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.375 inches
Width Across Flats: 0.312 inches minimum and 0.315 inches maximum
Thread Quantity Per Inch: 16
Hardness Rating: 34.0 rockwell c minimum and 38.0 rockwell c maximum overall
Material: steel comp 4130 overall
Surface Treatment: passivate overall
Test Data Document: "81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
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
9157796-71	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-721-4761?

The FSCG of the NSN 5305-00-721-4761 is 5305

Does the NSN 5305-00-721-4761 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-721-4761 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 5305-00-721-4761 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-721-4761 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 5305-00-721-4761 was assigned to the Federal Catalog?

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