5305-00-273-4731

Find complete technical information, availability, and procurement data for: 5305-00-273-4731
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-273-4731

Item Name Code

16282

Assigment Date

01/01/1963 (63 years ago)

1.250 inches nominal fastener length, 3a thread class, 1.000 inches nominal thread length, right-hand thread direction, flat chamfer 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: 3a
Thread Direction: right-hand
Thread Length: 1.000 inches nominal
Fastener Length: 1.250 inches nominal
Head Style: flat chamfer
Head Diameter: 0.367 inches minimum and 0.375 inches maximum
Head Height: 0.244 inches minimum and 0.250 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.187 inches minimum and 0.189 inches maximum
Thread Quantity Per Inch: 20
Hardness Rating: 80.0 rockwell b minimum overall
Minimum Yield Strength: 30000 pounds per square inch
Material: steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 410 or steel comp 416 or steel comp 420 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: passivate overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 1 type and 1936 series

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-816-6788	No Name Available	01/01/1963

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
43S4380PC596	Socket Head Cap Screw
MS35461-27	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-273-4731?

The FSCG of the NSN 5305-00-273-4731 is 5305

Does the NSN 5305-00-273-4731 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-273-4731 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 5305-00-273-4731 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-273-4731 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 5305-00-273-4731 was assigned to the Federal Catalog?

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