ST3M426C4M

View detailed technical data, stock status, and sourcing information for: ST3M426C4M
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-279-4423

Item Name Code

29729

Assigment Date

08/08/1973 (53 years ago)

prevailing torque all metal design locking feature, 0.460 inches maximum washer outside diameter, 3b thread class, right-hand thread direction, 0.277 inches minimum and 0.287 inches maximum 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
Washer Outside Diameter: 0.460 inches maximum
Counterbore Diameter: 0.277 inches minimum and 0.287 inches maximum nut
Lubrication: dry film lubricant
Overall Height: 0.271 inches minimum and 0.291 inches maximum
Nut Style: double hexagon
Washer Thickness: 0.072 inches nominal
Nut Counterbore Depth: 0.067 inches minimum and 0.077 inches maximum nut
Width Across Flats: 0.305 inches minimum and 0.313 inches maximum
Thread Series: unjf
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
Material: iron alloy 660 overall
Material Document And Classification: ams 5735 assn std single material response or ams 5737 assn std single material response overall
Specification/Standard Data: 76301-st3-426 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
10121248	Extended Washer Self-Locking Nut
HW49660-4	Extended Washer Self-Locking Nut
ST3M426C4M	Extended Washer Self-Locking Nut
TLN1002CD3-4	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-279-4423?

The FSCG of the NSN 5310-00-279-4423 is 5310

Does the NSN 5310-00-279-4423 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-279-4423 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 5310-00-279-4423 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-279-4423 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 5310-00-279-4423 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Aug 8, 1973