MS51957-13S316

View detailed technical data, stock status, and sourcing information for: MS51957-13S316
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-728-6981

Item Name Code

06657

Assigment Date

04/16/2025 (1 year ago)

A two electrode semiconductor device having an asymmetrical voltage - current characteristic. May or may not include mounting hardware and/or heatsink. Excludes:light emitting diode and semiconductor device,photo. For items containing material such as selenium and copper oxide, see recifier, metallic.

right-hand thread direction, pan head style, 2a thread class, 1.00 inches nominal fastener length, 0.250 inches nominal 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: 0.250 inches nominal
Fastener Length: 1.00 inches nominal
Head Style: pan
Head Diameter: 0.2050 inches minimum and 0.2190 inches maximum
Head Height: 0.700 inches minimum and 0.800 inches maximum
Internal Drive Style: cross recess type ii
Nominal Thread Diameter: 0.1120 inches
Thread Quantity Per Inch: 40
Part Name Assigned By Controlling Agency: machine screw
Screw Material: steel comp 316
Screw Surface Treatment: passivate
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
MS51957-13S316	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-728-6981?

The FSCG of the NSN 5305-01-728-6981 is 5305

Does NSN 5305-01-728-6981 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 5305-01-728-6981 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-728-6981 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 5305-01-728-6981 was assigned to the Federal Catalog?

It was assigned 1 year ago, on Wed, Apr 16, 2025