A51B51540-19

View detailed technical data, stock status, and sourcing information for: A51B51540-19
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-922-1481

Item Name Code

13206

Assigment Date

05/14/1972 (54 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.

0.2497 inches minimum and 0.2517 inches maximum body inside diameter, 27.0 rockwell c minimum and 32.0 rockwell c maximum overall hardness rating, square all corners corner shape, 0.3133 inches minimum and 0.3136 inches maximum body outside diameter, 0.6350 inches minimum and 0.6400 inches maximum overall length

Product Characteristics

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

Overall Length: 0.6350 inches minimum and 0.6400 inches maximum
Body Outside Diameter: 0.3133 inches minimum and 0.3136 inches maximum
Body Inside Diameter: 0.2497 inches minimum and 0.2517 inches maximum
Corner Shape: square all corners
Hardness Rating: 27.0 rockwell c minimum and 32.0 rockwell c maximum overall
Material: steel overall
Material Document And Classification: gs30c,fscm 26512 mfr ref single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Style Designator: solid, plain, no outside flanges
Test Data Document: "81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."

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
A51B51540-19	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-922-1481?

The FSCG of the NSN 3120-00-922-1481 is 3120

Does the NSN 3120-00-922-1481 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-922-1481 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 3120-00-922-1481 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-922-1481 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 3120-00-922-1481 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sun, May 14, 1972