ST3M352A7-21

View detailed technical data, stock status, and sourcing information for: ST3M352A7-21
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5320 Rivets

National Stock Number

5320-01-091-6958

Item Name Code

67165

Assigment Date

03/11/1980 (46 years ago)

A metallic or nonmetallic item, headed at one end, with a cylindrically shaped shank which may be tapered, grooved, or threaded. A locking collar or sleeve may be provided to perform the same holding action as the clinching portion of a conventional rivet. The shank may include an external wrenching facility which breaks off at a predetermined applied torque.

1.787 inches minimum and 1.812 inches maximum fastener length, 3a thread class, flush countersunk head style, 0.5273 inches nominal shank diameter, right-hand thread direction

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Fastener Length: 1.787 inches minimum and 1.812 inches maximum
Head Style: flush countersunk
Shank Diameter: 0.5273 inches nominal
Shank Style: pin-rivet, tapered, threaded
Head Major Diameter: 0.695 inches minimum and 0.767 inches maximum
Tip Diameter: 0.5040 inches nominal
Lubrication: cetyl alcohol
Grip Length: 1.302 inches minimum and 1.317 inches maximum
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 180000 pounds per square inch
Nominal Thread Size: 0.438 inches
Shear Strength: 108000 single pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp 8740 or steel comp e4340 overall
Material Document And Classification: mil-s-6049 mil spec 1st material response or mil-s-5000 mil spec 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator: unjf

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
ST3M352A7-21	Pin-Rivet
TL140-7-21	Pin-Rivet

FAQs

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

What is the FSCG of the NSN 5320-01-091-6958?

The FSCG of the NSN 5320-01-091-6958 is 5320

Does the NSN 5320-01-091-6958 have a Schedule B code assigned?

Yes, the Schedule B code is 7318230000

Does NSN 5320-01-091-6958 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 5320-01-091-6958 contain precious materials?

Precious metal content is unknown

Does NSN 5320-01-091-6958 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 5320-01-091-6958 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Tue, Mar 11, 1980