21830-1

View detailed technical data, stock status, and sourcing information for: 21830-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-154-0300

Item Name Code

06657

Assigment Date

05/19/1983 (43 years ago)

An open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, designed to provide resistance to compression forces. Excludes:springs designed for thermal actuation (springs in which the torsion forces are designed to be counteracted by changes in temperature) and spring, reinforcing, hose.

2a thread class, 0.107 inches minimum and 0.188 inches maximum thread length, right-hand thread direction, 0.157 inches minimum and 0.188 inches maximum fastener length, flat countersunk head style

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: 0.107 inches minimum and 0.188 inches maximum
Fastener Length: 0.157 inches minimum and 0.188 inches maximum
Head Style: flat countersunk
Head Diameter: 0.055 inches minimum and 0.067 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Screw Material: copper alloy
Screw Surface Treatment: oxide
Screw Surface Treatment Document And Classification: mil-f-14072 mil spec single treatment response
Color: black
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
21830-1	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-154-0300?

The FSCG of the NSN 5305-01-154-0300 is 5305

Does the NSN 5305-01-154-0300 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-01-154-0300 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 5305-01-154-0300 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-154-0300 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 5305-01-154-0300 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, May 19, 1983