MS21025-20

View detailed technical data, stock status, and sourcing information for: MS21025-20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-838-0265

Item Name Code

01854

Assigment Date

01/01/1962 (64 years ago)

1.500 inches minimum and 1.516 inches maximum width across flats, castellated, hexagon nut style, 3b thread class, right-hand thread direction, 0.562 inches minimum and 0.578 inches maximum nut height

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b
Thread Direction: right-hand
Nut Style: castellated, hexagon
Nut Height: 0.562 inches minimum and 0.578 inches maximum
Width Across Flats: 1.500 inches minimum and 1.516 inches maximum
Thread Series: un
Thread Quantity Per Inch: 16
Hardness Rating: 30.0 rockwell c minimum and 34.0 rockwell c maximum
Nominal Thread Size: 1.250 inches
Countersink Angle: 110.0 degrees nominal nut
Bearing Surface Type: washer faced
Bearing Surface Finish: 32.0 microinches
Material: steel comp 4140 or steel comp 8740 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Nondefinitive Spec/Std Data: 5 type

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
10121751	Nut,plain,castellated,hexagon
MS21025-20	Nut,plain,castellated,hexagon

FAQs

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

What is the FSCG of the NSN 5310-00-838-0265?

The FSCG of the NSN 5310-00-838-0265 is 5310

Does the NSN 5310-00-838-0265 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-838-0265 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 5310-00-838-0265 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-838-0265 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 5310-00-838-0265 was assigned to the Federal Catalog?

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