5305-01-278-4009

Find complete technical information, availability, and procurement data for: 5305-01-278-4009
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-278-4009

Item Name Code

06657

Assigment Date

05/05/1988 (38 years ago)

An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.

right-hand thread direction, 3a thread class, flat countersunk head style, 0.259 inches minimum and 0.261 inches maximum thread length, 0.601 inches minimum and 0.621 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: 3a
Thread Direction: right-hand
Thread Length: 0.259 inches minimum and 0.261 inches maximum
Fastener Length: 0.601 inches minimum and 0.621 inches maximum
Head Style: flat countersunk
Head Diameter: 0.246 inches minimum and 0.251 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.125 inches
Thread Quantity Per Inch: 40
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Screw Material Document And Classification: mil-s-18732 mil spec single material 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
BB302-6-5	Machine Screw
GC530A6-5	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-278-4009?

The FSCG of the NSN 5305-01-278-4009 is 5305

Does NSN 5305-01-278-4009 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 5305-01-278-4009 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-278-4009 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 5305-01-278-4009 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, May 5, 1988