SEELSKREWR4-40-5

View detailed technical data, stock status, and sourcing information for: SEELSKREWR4-40-5
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-839-3221

Item Name Code

06657

Assigment Date

01/01/1962 (64 years ago)

0.500 inches maximum thread length, right-hand thread direction, 2a thread class, undercut pan no. 2 head style, 0.500 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 Direction: right-hand
Thread Length: 0.500 inches maximum
Fastener Length: 0.500 inches nominal
Head Style: undercut pan no. 2
Head Diameter: 0.238 inches maximum
Head Height: 0.080 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Screw Material: steel
Screw Surface Treatment: passivate
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-435-5721	No Name Available	03/01/1984
5305-00-798-0865	No Name Available	12/16/1970
5305-00-855-2995	No Name Available	11/07/1969

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
10051717	Machine Screw
2639714-5	Machine Screw
8991678-5	Machine Screw
ES2028-07R08	Machine Screw
R4-40-500	Machine Screw
R4-40X1-2	Machine Screw
SEELSKREWR4-40-5	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-839-3221?

The FSCG of the NSN 5305-00-839-3221 is 5305

Does the NSN 5305-00-839-3221 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-839-3221 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 5305-00-839-3221 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-839-3221 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 5305-00-839-3221 was assigned to the Federal Catalog?

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