S31K331

View detailed technical data, stock status, and sourcing information for: S31K331
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-219-7200

Item Name Code

01873

Assigment Date

11/01/1985 (40 years ago)

A metallic headed fastener having internal threads for a portion of the full length. It may have a smooth, hexagon or splined shank with an open or closed end. Is designed to be expanded tightly against the material it is being installed in by means of a special tool. The item must have a specified grip range. The grip range is the thickness of the material the item is being installed in. See also nut (1) self-locking, blind rivet. Excludes:nut (1), sleeve.

3b thread class, flat countersunk reverse keyed head style, 0.656 inches nominal head diameter, right-hand thread direction, 0.104 inches maximum key length

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
Head Style: flat countersunk reverse keyed
Head Diameter: 0.656 inches nominal
Key Length: 0.104 inches maximum
Head Height: 0.104 inches maximum
Nut Style: blind rivet w/smooth round shank
Nut Diameter: 0.409 inches minimum and 0.413 inches maximum
Nut Length: 0.985 inches minimum and 1.015 inches maximum
Shank End Type: open
Thread Series: unc
Thread Quantity Per Inch: 18
Nominal Thread Size: 0.312 inches
Head Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp 1108 or steel comp 1110 overall
Material Document And Classification: aisi assn std all material responses overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response 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
S31K331	Blind Rivet Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-219-7200?

The FSCG of the NSN 5310-01-219-7200 is 5310

Does the NSN 5310-01-219-7200 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-219-7200 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 5310-01-219-7200 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-219-7200 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 5310-01-219-7200 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Fri, Nov 1, 1985