1688-54

View detailed technical data, stock status, and sourcing information for: 1688-54
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-066-1957

Item Name Code

01869

Assigment Date

01/01/1963 (63 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes:thrust type washer.

0.757 inches nominal hole diameter, 1.310 inches nominal outside diameter, 1 external key quantity, 1.560 inches nominal overall distance including keys, 0.120 inches nominal internal straight key width

Product Characteristics

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

Hole Diameter: 0.757 inches nominal
Outside Diameter: 1.310 inches nominal
Internal Straight Key Width: 0.120 inches nominal
Overall Distance Including Keys: 1.560 inches nominal
External Key Quantity: 1
Internal Key Quantity: 1
Material Thickness: 0.090 inches nominal
End Item Identification: landing gear system components
Minimum Tensile Strength: 125000 pounds per square inch
Criticality Code Justification: agav
Heat Treatment: as fabricated
Material: steel comp 4130 overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: mil-s-5002 mil spec single treatment response overall
Style Designator: key

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
1688-54	Key Washer
169791	Key Washer
32-45024-3	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-00-066-1957?

The FSCG of the NSN 5310-00-066-1957 is 5310

Does the NSN 5310-00-066-1957 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-066-1957 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 5310-00-066-1957 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-066-1957 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 5310-00-066-1957 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963