20C3259-1

View detailed technical data, stock status, and sourcing information for: 20C3259-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-435-8991

Item Name Code

01852

Assigment Date

05/20/1974 (52 years ago)

2a thread class, hexagon head style, 0.300 inches minimum and 0.320 inches maximum head height, 0.370 inches minimum and 0.390 inches maximum thread length, 1.010 inches nominal 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 Length: 0.370 inches minimum and 0.390 inches maximum
Fastener Length: 1.010 inches nominal
Head Style: hexagon
Head Height: 0.300 inches minimum and 0.320 inches maximum
Width Between Flats: 0.370 inches minimum and 0.390 inches maximum
First Diameter From Head: 0.190 inches minimum and 0.200 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.620 inches minimum and 0.640 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Surface Treatment: passivate overall
Surface Treatment Document And Classification: mil-f-14072,finish e300 mil spec single treatment response overall
Thread Series Designator: unf

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
20C3259-1	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-00-435-8991?

The FSCG of the NSN 5305-00-435-8991 is 5305

Does NSN 5305-00-435-8991 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 5305-00-435-8991 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-435-8991 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 5305-00-435-8991 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, May 20, 1974