5305-00-273-4956

Find complete technical information, availability, and procurement data for: 5305-00-273-4956
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-273-4956

Item Name Code

16282

Assigment Date

01/01/1963 (63 years ago)

0.734 inches minimum and 0.875 inches maximum thread length, 0.845 inches minimum and 0.875 inches maximum fastener length, flat chamfer head style, right-hand thread direction, 3a 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: 3a
Thread Direction: right-hand
Thread Length: 0.734 inches minimum and 0.875 inches maximum
Fastener Length: 0.845 inches minimum and 0.875 inches maximum
Head Style: flat chamfer
Head Diameter: 0.457 inches minimum and 0.469 inches maximum
Head Height: 0.306 inches minimum and 0.312 inches maximum
Hole Diameter: 0.044 inches minimum and 0.050 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.2500 inches minimum and 0.2530 inches maximum
Hole Quantity: 6
Hole Type: drilled
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 170000 pounds per square inch
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum overall
Minimum Yield Strength: 150000 pounds per square inch
Hole Configuration Style: round internal hexagon
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 6 type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-646-7773	No Name Available	09/01/1982

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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:

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FAQs

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

What is the FSCG of the NSN 5305-00-273-4956?

The FSCG of the NSN 5305-00-273-4956 is 5305

Does the NSN 5305-00-273-4956 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-273-4956 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 5305-00-273-4956 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-273-4956 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 5305-00-273-4956 was assigned to the Federal Catalog?

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