F50403-3-2

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-030-1810

Item Name Code

05280

Assigment Date

10/30/1976 (49 years ago)

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

right-hand thread direction, dry film lubricant lubrication, prevailing torque all metal design locking feature, 3b thread class, 0.238 inches minimum nut counterbore diameter

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
Counterbore Diameter: 0.238 inches minimum nut
Lubrication: dry film lubricant
Mounting Hole Diameter: 0.098 inches minimum and 0.103 inches maximum
Nut Style: plate
Nut Length: 0.680 inches maximum
Nut Height: 0.290 inches maximum
Nut Counterbore Depth: 0.125 inches minimum nut
Nut Mounting Provision: straight holes
Mounting Hole Arrangement Style: 2 holes
Distance From Aperture Center To Mounting Hole Center: 0.339 inches minimum and 0.349 inches maximum
Center To Center Distance Between Mounting Holes Along Width: 0.484 inches minimum and 0.488 inches maximum
Thread Series: unf
Features Provided: floating nut
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Special Features: color yellow
Material: iron alloy 660 overall
Material Document And Classification: ams 5732 assn std single material response overall
Specification/Standard Data: 76301-st3-721 manufacturers standard

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
10122006	Plate Self-Locking Nut
F12092-2-3	Plate Self-Locking Nut
F50403-3-2	Plate Self-Locking Nut
NS202183-3-2	Plate Self-Locking Nut
ST3M721C3M2	Plate Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-030-1810?

The FSCG of the NSN 5310-01-030-1810 is 5310

Does the NSN 5310-01-030-1810 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-030-1810 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 5310-01-030-1810 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-030-1810 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 5310-01-030-1810 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Sat, Oct 30, 1976