MS51957-8B

View detailed technical data, stock status, and sourcing information for: MS51957-8B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-477-2438

Item Name Code

06657

Assigment Date

06/28/1971 (55 years ago)

0.558 inches minimum and 0.625 inches maximum thread length, right-hand thread direction, 0.594 inches minimum and 0.625 inches maximum fastener length, 2a thread class, pan 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: 0.558 inches minimum and 0.625 inches maximum
Fastener Length: 0.594 inches minimum and 0.625 inches maximum
Head Style: pan
Head Diameter: 0.155 inches minimum and 0.167 inches maximum
Head Height: 0.053 inches minimum and 0.062 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.086 inches
Thread Quantity Per Inch: 56
Minimum Tensile Strength: 80000 pounds per square inch
Screw Material: steel corrosion resisting
Screw Material Document And Classification: qq-s-763,300 series fed spec single material response or 66,300 series fed std single material response or comp 16-18 or 18-8 assn std single material response
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 3 type and 9c style

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-407-4581	No Name Available	01/01/1983
5305-00-409-5757	No Name Available	07/16/1972
5305-01-022-0157	No Name Available	12/01/1986

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
343-0674-000	Machine Screw
AH726-16	Machine Screw
MS51957-8B	Machine Screw
P343-0674-000	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-477-2438?

The FSCG of the NSN 5305-00-477-2438 is 5305

Does the NSN 5305-00-477-2438 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-477-2438 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 5305-00-477-2438 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-477-2438 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 5305-00-477-2438 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Jun 28, 1971