2-121-028-03

View detailed technical data, stock status, and sourcing information for: 2-121-028-03
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-039-6446

Item Name Code

15887

Assigment Date

04/25/1977 (49 years ago)

3.310 inches nominal nut counterbore diameter, right-hand thread direction, 3b thread class, 0.075 inches nominal drive point depth, round nut 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: 3b
Thread Direction: right-hand
Counterbore Diameter: 3.310 inches nominal nut
Drive Point Depth: 0.075 inches nominal
Nut Style: round
Nut Diameter: 3.790 inches nominal
Nut Thickness: 0.280 inches nominal
Drive Point Width: 0.380 inches nominal
Drive Point Quantity: 8
Thread Series: uns
Thread Quantity Per Inch: 16
Hardness Rating: 35.5 rockwell c minimum
Nominal Thread Size: 3.281 inches
Countersink Angle: 90.0 degrees nominal nut
Material: steel corrosion resisting overall
Surface Treatment: silver 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
2-121-028-03	Round Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-039-6446?

The FSCG of the NSN 5310-01-039-6446 is 5310

Does the NSN 5310-01-039-6446 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-039-6446 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 5310-01-039-6446 contain precious materials?

Item contains silver.

Does NSN 5310-01-039-6446 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 5310-01-039-6446 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Mon, Apr 25, 1977