55-212

View detailed technical data, stock status, and sourcing information for: 55-212
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-285-5684

Item Name Code

13393

Assigment Date

01/01/1960 (66 years ago)

A locking device which is serrated on the inside and outside diameters. It may have outer serrations omitted on one or two sides for close edge installation. The inner serrations engage the mating serrations of bolts, inserts, nuts, studs or similar items to be locked in place. The outer serrations broach their way into parent material when driven or pressed into place.

round center hole shape style, rectangular cross-sectional shape style, 0.302 inches minimum and 0.322 inches maximum hole diameter, round peripheral shape style, 0.063 inches nominal thickness

Product Characteristics

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

Cross-Sectional Shape Style: rectangular
Hole Diameter: 0.302 inches minimum and 0.322 inches maximum
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.063 inches nominal
Overall Diameter: 1.490 inches minimum and 1.510 inches maximum
Material: steel overall
Material Document And Classification: qq-s-636-canceled fed spec single material response 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
55-212	Flat Washer
NAS70-261-1500	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-00-285-5684?

The FSCG of the NSN 5310-00-285-5684 is 5310

Does the NSN 5310-00-285-5684 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-285-5684 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 5310-00-285-5684 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-285-5684 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 5310-00-285-5684 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960