NAS685C3

View detailed technical data, stock status, and sourcing information for: NAS685C3
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-801-0668

Item Name Code

05280

Assigment Date

01/01/1962 (64 years ago)

prevailing torque all metal design locking feature, 0.406 inches minimum and 0.416 inches maximum nut counterbore diameter, 0.098 inches minimum and 0.103 inches maximum mounting hole diameter, right-hand thread direction, 3b thread class

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: 0.406 inches minimum and 0.416 inches maximum nut
Mounting Hole Diameter: 0.098 inches minimum and 0.103 inches maximum
Nut Style: plate
Nut Length: 0.716 inches nominal
Nut Height: 0.281 inches nominal
Plate Thickness: 0.047 inches nominal
Nut Mounting Provision: straight holes
Mounting Hole Arrangement Style: 2 holes
Distance From Aperture Center To Mounting Hole Center: 0.339 inches minimum and 0.349 inches maximum
Temp Rating: 800.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Countersink Angle: 100.0 degrees nominal nut
Material: iron alloy 660 overall
Material Document And Classification: ams 5525 assn std single material response overall
Precious Material: silver
Surface Treatment: silver overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-802-1355	No Name Available	02/01/1976

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
NAS685C3	Plate Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-801-0668?

The FSCG of the NSN 5310-00-801-0668 is 5310

Does the NSN 5310-00-801-0668 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-801-0668 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 5310-00-801-0668 contain precious materials?

Item contains silver.

Does NSN 5310-00-801-0668 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 5310-00-801-0668 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962