B49993

View detailed technical data, stock status, and sourcing information for: B49993
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-030-4866

Item Name Code

13432

Assigment Date

11/07/1976 (49 years ago)

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

0.578 inches minimum and 0.608 inches maximum overall diameter, knurled round cap outside surface condition, 0.490 inches minimum and 0.495 inches maximum tube outside diameter for which designed, friction design type, 1.625 inches nominal inside diameter length

Product Characteristics

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

Tube Outside Diameter For Which Designed: 0.490 inches minimum and 0.495 inches maximum
Overall Diameter: 0.578 inches minimum and 0.608 inches maximum
Design Type: friction
Inside Diameter Length: 1.625 inches nominal
Round Cap Outside Surface Condition: knurled
Material: aluminum alloy 6061
Material Document And Classification: alloy 6061-t6 national spec single material response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625, type 2, class 1 mil spec single treatment response

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
B49993	Dust and Moisture Protective Cap

FAQs

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

What is the FSCG of the NSN 5340-01-030-4866?

The FSCG of the NSN 5340-01-030-4866 is 5340

Does the NSN 5340-01-030-4866 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5340-01-030-4866 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 5340-01-030-4866 contain precious materials?

Precious metal content is unknown

Does NSN 5340-01-030-4866 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 5340-01-030-4866 was assigned to the Federal Catalog?

It was assigned 49 years ago, on Sun, Nov 7, 1976