F559-5ITEM20

View detailed technical data, stock status, and sourcing information for: F559-5ITEM20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-797-9640

Item Name Code

22846

Assigment Date

01/01/1962 (64 years ago)

3a thread class, flat chamfer head style, 0.312 inches nominal fastener length, right-hand thread direction, 0.172 inches minimum 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: 3a
Thread Direction: right-hand
Thread Length: 0.172 inches minimum
Fastener Length: 0.312 inches nominal
Head Style: flat chamfer
Head Diameter: 0.375 inches nominal
Head Height: 0.063 inches nominal
Shoulder Diameter: 0.271 inches minimum and 0.281 inches maximum first shoulder
Shoulder Length: 0.109 inches nominal first shoulder
Internal Drive Style: slot
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Shoulder Shape: round first shoulder
Special Features: thd relieved groove 0.031 in. w
Material: steel comp 303 overall
Surface Treatment: passivate overall
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
A559-40	Shoulder Screw
F559-5ITEM20	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-00-797-9640?

The FSCG of the NSN 5305-00-797-9640 is 5305

Does the NSN 5305-00-797-9640 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-797-9640 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 5305-00-797-9640 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-797-9640 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 5305-00-797-9640 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962