MS21087L4W

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-033-2674

Item Name Code

05280

Assigment Date

01/02/1977 (49 years ago)

right-hand thread direction, 2 welding projection quantity, 0.254 inches minimum nut counterbore diameter, prevailing torque all metal design locking feature, 3b thread class

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
Locking Feature: prevailing torque all metal design
Welding Projection Quantity: 2
Counterbore Diameter: 0.254 inches minimum nut
Lubrication: dry film lubricant
Nut Style: plate
Nut Length: 0.591 inches maximum
Nut Height: 0.281 inches maximum
Plate Thickness: 0.055 inches maximum
Plate Width: 0.380 inches minimum and 0.414 inches maximum
Nut Counterbore Depth: 0.062 inches minimum nut
Nut Mounting Provision: welding projections
Mounting Provision Location: opposite nut projection side
Temp Rating: 450.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 28
Hardness Rating: 49.0 rockwell c maximum
Nominal Thread Size: 0.250 inches
Material: iron alloy 660 overall
Material Document And Classification: ams5732 assn std single material response or ams5737 assn std single material response overall

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
457-5607	Plate Self-Locking Nut
MA 12740E-048PW	Plate Self-Locking Nut
MK4001-4P	Plate Self-Locking Nut
MS21087L4W	Plate Self-Locking Nut
MT13C428PWBM	Plate Self-Locking Nut
R300C4MW	Plate Self-Locking Nut
RMLHTA575M2860P-048	Plate Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-033-2674?

The FSCG of the NSN 5310-01-033-2674 is 5310

Does the NSN 5310-01-033-2674 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-033-2674 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 5310-01-033-2674 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-033-2674 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 5310-01-033-2674 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Sun, Jan 2, 1977