L520-43

View detailed technical data, stock status, and sourcing information for: L520-43
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-915-4660

Item Name Code

01860

Assigment Date

07/15/1966 (60 years ago)

A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.

0.014 inches minimum and 0.024 inches maximum pilot length, 2b thread class, right-hand thread direction, 0.197 inches minimum and 0.201 inches maximum pilot diameter, clinch 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
Pilot Diameter: 0.197 inches minimum and 0.201 inches maximum
Pilot Length: 0.014 inches minimum and 0.024 inches maximum
Nut Style: clinch
Nut Height: 0.182 inches minimum and 0.192 inches maximum
Width Across Flats: 0.234 inches minimum and 0.266 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 40
Nominal Thread Size: 0.112 inches
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp 303 overall
Material Document And Classification: qq-s-763,cond a fed spec single material response overall
Surface Treatment: passivate 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
7432708-5	Clinch Plain Nut
L520-43	Clinch Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-915-4660?

The FSCG of the NSN 5310-00-915-4660 is 5310

Does the NSN 5310-00-915-4660 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-915-4660 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 5310-00-915-4660 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-915-4660 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 5310-00-915-4660 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Jul 15, 1966