MS51968-4

View detailed technical data, stock status, and sourcing information for: MS51968-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-880-7746

Item Name Code

01857

Assigment Date

01/01/1960 (66 years ago)

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

0.258 inches minimum and 0.273 inches maximum nut height, hexagon nut style, 2b thread class, 0.4890 inches minimum and 0.5000 inches maximum width across flats, right-hand thread direction

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.258 inches minimum and 0.273 inches maximum
Width Across Flats: 0.4890 inches minimum and 0.5000 inches maximum
Thread Series: unf
Thread Quantity Per Inch: 24
Hardness Rating: 121.0 brinell standard minimum
Nominal Thread Size: 0.312 inches
Bearing Surface Type: chamfered or washer faced
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-042-6913	No Name Available	10/01/1996
5310-00-045-3345	No Name Available	07/01/1983
5310-00-176-8161	No Name Available	11/01/1984
5310-00-194-8208	No Name Available	01/01/2002
5310-00-208-9150	No Name Available	01/01/1983
5310-00-358-3036	No Name Available	10/16/1996
5310-00-406-0908	No Name Available	10/01/1971
5310-00-523-8016	No Name Available	09/01/1979
5310-00-531-0324	Hexagon Plain Nut	07/01/2025
5310-00-543-5067	Hexagon Plain Nut	07/01/2025
5310-00-639-1048	No Name Available	03/01/1984
5310-00-690-0002	No Name Available	02/14/1969
5310-00-732-0941	No Name Available	05/06/1967
5310-00-821-3497	No Name Available	08/03/1980
5310-00-960-9348	No Name Available	02/01/1983
5310-01-114-6545	No Name Available	09/01/1985
5310-01-194-0400	No Name Available	07/01/1987

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
1006087-P6	Hexagon Plain Nut
1918650	Hexagon Plain Nut
225853	Hexagon Plain Nut
22A4C2	Hexagon Plain Nut
31263-33	Hexagon Plain Nut
403120019	Hexagon Plain Nut
453345	Hexagon Plain Nut
5310008807746	Hexagon Plain Nut
5593039	Hexagon Plain Nut
6031070	Hexagon Plain Nut
6300791-5	Hexagon Plain Nut
7410217	Hexagon Plain Nut
750-012	Hexagon Plain Nut
787AS104-10	Hexagon Plain Nut
853738-00	Hexagon Plain Nut
90492&5&16	Hexagon Plain Nut
M2027Z	Hexagon Plain Nut
MS51968-4	Hexagon Plain Nut
MS51968-5	Hexagon Plain Nut
TIP01447	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-880-7746?

The FSCG of the NSN 5310-00-880-7746 is 5310

Does the NSN 5310-00-880-7746 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-880-7746 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 5310-00-880-7746 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-880-7746 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 5310-00-880-7746 was assigned to the Federal Catalog?

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