18EM2051

View detailed technical data, stock status, and sourcing information for: 18EM2051
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-422-8264

Item Name Code

13393

Assigment Date

12/08/1995 (30 years ago)

An item designed to fit over a packing gland by mating with a surface of a second part which together will retain into a narrow groove or confined space the packing, preformed or o-ring, or an item designed to fit over a rod or shaft, to mate with a stuffing box to confine packing material. It may function as a static or dynamic seal retainer with the packing located on, around, or in the centerline direction of the rod or shaft axis. It may have holes or joints for mounting, be threaded or unthreaded. See also packing nut and packing nut, stuffing tube.

round center hole shape style, round peripheral shape style, 3.50 millimeters minimum and 4.60 millimeters maximum thickness, 21.80 millimeters minimum and 22.32 millimeters maximum hole diameter, rectangular cross-sectional shape style

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: 21.80 millimeters minimum and 22.32 millimeters maximum
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 3.50 millimeters minimum and 4.60 millimeters maximum
Overall Diameter: 49.80 millimeters minimum and 51.00 millimeters maximum
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum
Material: steel 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
18EM2051	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-01-422-8264?

The FSCG of the NSN 5310-01-422-8264 is 5310

Does the NSN 5310-01-422-8264 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-422-8264 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 5310-01-422-8264 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-422-8264 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 5310-01-422-8264 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Fri, Dec 8, 1995