MS51866-1

View detailed technical data, stock status, and sourcing information for: MS51866-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-134-5782

Item Name Code

15893

Assigment Date

07/06/1982 (44 years ago)

prevailing torque all metal design or prevailing torque with nonmetallic insert locking feature, 3b thread class, right-hand thread direction, 0.110 inches minimum and 0.140 inches maximum pilot length, 0.321 inches minimum and 0.325 inches maximum pilot diameter

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
Locking Feature: prevailing torque all metal design or prevailing torque with nonmetallic insert
Pilot Diameter: 0.321 inches minimum and 0.325 inches maximum
Pilot Length: 0.110 inches minimum and 0.140 inches maximum
Nut Style: spline
Nut Diameter: 0.423 inches minimum and 0.453 inches maximum
Nut Height: 0.267 inches minimum and 0.327 inches maximum
Temp Rating: 250.0 fahrenheit maximum
Thread Series: unc
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.164 inches
Special Features: optional hexagon drive type; optional nylon locking insert
Material: plastic polyamide (nylon) locking insert
Material: steel nut
Material Document And Classification: mil-n-45913,grb mil spec single material response overall
Surface Treatment: cadmium and chromate overall except insert
Surface Treatment Document And Classification: qq-p-416,type 2,class 3 fed spec single treatment response overall except insert

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
MS51866-1	Spline Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-134-5782?

The FSCG of the NSN 5310-01-134-5782 is 5310

Does the NSN 5310-01-134-5782 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-134-5782 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 5310-01-134-5782 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-134-5782 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 5310-01-134-5782 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, Jul 6, 1982