5305-00-273-4020

Find complete technical information, availability, and procurement data for: 5305-00-273-4020
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-273-4020

Item Name Code

06657

Assigment Date

07/30/1973 (52 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

1.088 inches minimum and 1.250 inches maximum thread length, right-hand thread direction, pan head style, 2a thread class, 1.188 inches minimum and 1.250 inches maximum fastener length

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: 1.088 inches minimum and 1.250 inches maximum
Fastener Length: 1.188 inches minimum and 1.250 inches maximum
Head Style: pan
Head Diameter: 0.473 inches minimum and 0.492 inches maximum
Head Height: 0.162 inches minimum and 0.175 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 55000 pounds per square inch
Screw Material: copper alloy
Screw Material Document And Classification: qq-b-613 fed spec single material response or qq-b-626 fed spec single material response or qq-w-321 fed spec single material response
Screw Surface Treatment Document And Classification: qq-n-290 cl 1 gr g fed spec single treatment response
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
343-0372-000	Machine Screw
P343-0372-000	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-273-4020?

The FSCG of the NSN 5305-00-273-4020 is 5305

Does the NSN 5305-00-273-4020 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-00-273-4020 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 5305-00-273-4020 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-273-4020 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 5305-00-273-4020 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, Jul 30, 1973