MS9951-18

View detailed technical data, stock status, and sourcing information for: MS9951-18
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-064-6282

Item Name Code

15887

Assigment Date

08/28/1978 (47 years ago)

"a device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes:circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller."

0.310 inches minimum and 0.325 inches maximum nut thickness, 3b thread class, 1.742 inches minimum and 1.748 inches maximum nut diameter, right-hand thread direction, round nut style

Product Characteristics

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

Thread Class: 3b
Thread Direction: right-hand
Nut Style: round
Nut Diameter: 1.742 inches minimum and 1.748 inches maximum
Nut Thickness: 0.310 inches minimum and 0.325 inches maximum
Drive Point Width: 0.250 inches minimum and 0.260 inches maximum
Drive Point Quantity: 8
Thread Series: unjef
Thread Quantity Per Inch: 18
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum
Nominal Thread Size: 1.375 inches
Countersink Angle: 120.0 degrees nominal nut
Bearing Surface Finish: 32.0 microinches
Special Features: 4scallops on nut periphery-top side
Material: steel overall
Material Document And Classification: ams 6322 assn std single material response or ams 6323 assn std single material response 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
MS9951-18	Round Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-064-6282?

The FSCG of the NSN 5310-01-064-6282 is 5310

Does the NSN 5310-01-064-6282 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-064-6282 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 5310-01-064-6282 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-064-6282 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 5310-01-064-6282 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Mon, Aug 28, 1978