ST3M521A3-4

View detailed technical data, stock status, and sourcing information for: ST3M521A3-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-436-3205

Item Name Code

05280

Assigment Date

09/17/1996 (29 years ago)

A ferrous or nonferrous product with cross-sectional dimensions. Excludes:armor plate; plate, floor, metal; terneplate; and tinplate. For silver plate items see silver sheet.

right-hand thread direction, 3b thread class, 0.194 inches minimum first end counterbore diameter, 0.098 inches minimum and 0.103 inches maximum mounting hole diameter, prevailing torque all metal design locking feature

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: 0.194 inches minimum first end
Mounting Hole Diameter: 0.098 inches minimum and 0.103 inches maximum
Nut Style: plate (floating)
Nut Length: 0.948 inches maximum
Nut Height: 0.438 inches maximum
Plate Thickness: 0.020 inches nominal
Plate Width: 0.416 inches maximum
Nut Counterbore Depth: 0.250 inches minimum first end
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 Length: 0.686 inches minimum and 0.690 inches maximum
Temp Rating: 450.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Material: steel nut
Material: steel shell
Surface Treatment: cadmium and chromate nut
Surface Treatment: cadmium and chromate shell
Surface Treatment Document And Classification: qq-p-416, ty2, cl3 fed spec single treatment response nut
Surface Treatment Document And Classification: qq-p-416, ty2, cl3 fed spec single treatment response shell

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
F10429-4-3	Plate Self-Locking Nut
F39782-3-4	Plate Self-Locking Nut
ST3M521A3-4	Plate Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-436-3205?

The FSCG of the NSN 5310-01-436-3205 is 5310

Does the NSN 5310-01-436-3205 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-436-3205 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 5310-01-436-3205 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-436-3205 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 5310-01-436-3205 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Tue, Sep 17, 1996