20BM522

View detailed technical data, stock status, and sourcing information for: 20BM522
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-958-8793

Item Name Code

04214

Assigment Date

01/01/1962 (64 years ago)

A nonmetallic unthreaded item generally round in cross-sectional shape which, when placed on/in a machined-out portion of the threads of a screw or bolt, or inserted into the machined-out portion of the threads of a nut, locks the item, to which it is fixed, to the attached mating member and prevents loosening during excessive vibration. Excludes:bolt, self-locking; nut, self-locking (as modified); screw, self-locking; and insert, screw thread.

1.750 inches nominal accommodated shaft diameter, 3000 feet per minute accommodated shaft maximum rated speed, square case style, 2.500 inches nominal housing bore diameter, 0.437 inches nominal seal width

Product Characteristics

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

Accommodated Shaft Diameter: 1.750 inches nominal
Seal Width: 0.437 inches nominal
Accommodated Shaft Maximum Rated Speed: 3000 feet per minute
Case Style: square
Housing Bore Diameter: 2.500 inches nominal
Sealing Element Style: angular
Material: rubber synthetic sealing element
Material: steel case

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-733-8822	No Name Available	10/01/1975

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
20BM522	Plain Encased Seal
63X905	Plain Encased Seal

FAQs

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

What is the FSCG of the NSN 5330-00-958-8793?

The FSCG of the NSN 5330-00-958-8793 is 5330

Does the NSN 5330-00-958-8793 have a Schedule B code assigned?

Yes, the Schedule B code is 8484200000

Does NSN 5330-00-958-8793 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 5330-00-958-8793 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-958-8793 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5330-00-958-8793 was assigned to the Federal Catalog?

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