SI668A9D

View detailed technical data, stock status, and sourcing information for: SI668A9D
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-409-9921

Item Name Code

15932

Assigment Date

11/13/1970 (55 years ago)

0.385 inches minimum and 0.395 inches maximum recess diameter, 0.010 inches nominal material thickness, 0.068 inches minimum and 0.078 inches maximum overall height, 0.557 inches minimum and 0.582 inches maximum outside diameter, 0.185 inches minimum and 0.195 inches maximum hole diameter

Product Characteristics

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

Hole Diameter: 0.185 inches minimum and 0.195 inches maximum
Outside Diameter: 0.557 inches minimum and 0.582 inches maximum
Overall Height: 0.068 inches minimum and 0.078 inches maximum
Recess Diameter: 0.385 inches minimum and 0.395 inches maximum
Material Thickness: 0.010 inches nominal
Recess Angle: 100.0 degrees nominal
Material: aluminum alloy 2024 overall
Material Document And Classification: qq-a-250/5,t3 fed spec single material response or qq-a-250/5,t4 fed spec single material response overall
Style Designator: finishing

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
C668A9D	Finishing Washer
CG599A9D	Finishing Washer
SI668A9D	Finishing Washer

FAQs

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

What is the FSCG of the NSN 5310-00-409-9921?

The FSCG of the NSN 5310-00-409-9921 is 5310

Does the NSN 5310-00-409-9921 have a Schedule B code assigned?

Yes, the Schedule B code is 7616108000

Does NSN 5310-00-409-9921 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 5310-00-409-9921 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-409-9921 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 5310-00-409-9921 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Nov 13, 1970