MS51865-5

View detailed technical data, stock status, and sourcing information for: MS51865-5
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-311-7940

Item Name Code

05275

Assigment Date

12/05/1989 (36 years ago)

A nut having an externally splined sleeve, which holds it in position when forced into a hole of slightly smaller diameter. An integral feature is incorporated for locking.

dry film lubricant lubrication, prevailing torque with metallic insert or prevailing torque with nonmetallic insert locking feature, 2b thread class, right-hand thread direction, cap 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: 2b
Thread Direction: right-hand
Locking Feature: prevailing torque with metallic insert or prevailing torque with nonmetallic insert
Lubrication: dry film lubricant
Nut Style: cap
Nut Height: 0.410 inches nominal
Width Across Flats: 0.362 inches minimum and 0.375 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unc
Thread Quantity Per Inch: 24
Nominal Thread Size: 0.190 inches
Bearing Surface Type: chamfered
Material: steel overall
Material Document And Classification: mil-n-45913,grade a mil spec single material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 3 fed spec single treatment 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
MS51865-5	Cap Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-311-7940?

The FSCG of the NSN 5310-01-311-7940 is 5310

Does the NSN 5310-01-311-7940 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-311-7940 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 5310-01-311-7940 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-311-7940 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 5310-01-311-7940 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Dec 5, 1989