1090799

View detailed technical data, stock status, and sourcing information for: 1090799
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-421-9178

Item Name Code

06657

Assigment Date

12/23/1970 (55 years ago)

A homogenous spherical body, a series of which provides the rolling elements in a bearing, ball (as modified). The item is designed primarily to alleviate friction. It may have other usages such as the checking component in a ball-type check valve. Excludes:ball,check; ball,valve,ported.

0.307 inches minimum and 0.312 inches maximum fastener length, fillister head style, 2a thread class, right-hand thread direction, 0.307 inches minimum and 0.312 inches maximum thread 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: 0.307 inches minimum and 0.312 inches maximum
Fastener Length: 0.307 inches minimum and 0.312 inches maximum
Head Style: fillister
Head Diameter: 0.250 inches minimum and 0.270 inches maximum
Head Height: 0.091 inches minimum and 0.106 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.164 inches
Features Provided: casehardened
Thread Quantity Per Inch: 32
Screw Material: steel
Screw Surface Treatment: cadmium
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
1090799	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-421-9178?

The FSCG of the NSN 5305-00-421-9178 is 5305

Does the NSN 5305-00-421-9178 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-421-9178 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 5305-00-421-9178 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-421-9178 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 5305-00-421-9178 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Wed, Dec 23, 1970