66278-12-SS-12

View detailed technical data, stock status, and sourcing information for: 66278-12-SS-12
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-272-8329

Item Name Code

01860

Assigment Date

02/15/1988 (38 years ago)

An item composed of a specially designed channel and a series of nuts having integral self-locking features assembled in predetermined spacing.

2b thread class, 0.212 inches maximum pilot diameter, clinch nut style, 0.125 inches nominal nut counterbore 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: 2b
Thread Direction: right-hand
Pilot Diameter: 0.212 inches maximum
Counterbore Diameter: 0.125 inches nominal nut
Nut Style: clinch
Nut Height: 0.375 inches nominal
Nut Counterbore Depth: 0.188 inches nominal nut
Width Across Flats: 0.250 inches nominal
Thread Series: unc
Thread Quantity Per Inch: 40
Hardness Rating: 70.0 rockwell b nominal
Nominal Thread Size: 0.112 inches
Material: steel comp 303 overall
Surface Treatment: passivate 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
66278-12-SS-12	Clinch Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-272-8329?

The FSCG of the NSN 5310-01-272-8329 is 5310

Does the NSN 5310-01-272-8329 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-272-8329 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 5310-01-272-8329 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-272-8329 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 5310-01-272-8329 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Mon, Feb 15, 1988