5740A

View detailed technical data, stock status, and sourcing information for: 5740A
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4310 Compressors and Vacuum Pumps

National Stock Number

4310-00-062-8190

Item Name Code

11459

Assigment Date

06/20/1967 (59 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

6.000 inches standard bore diameter, straight face, double scraper, ventilated oil control cross-sectional shape style, concentric ring style, 0.2485 inches minimum and 0.2495 inches maximum overall width, 0.2230 inches minimum and 0.2380 inches maximum radial wall thickness

Product Characteristics

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

Cross-Sectional Shape Style: straight face, double scraper, ventilated oil control
Ring Style: concentric
Radial Wall Thickness: 0.2230 inches minimum and 0.2380 inches maximum
Overall Width: 0.2485 inches minimum and 0.2495 inches maximum
Standard Bore Diameter: 6.000 inches
Joint Style: vertical joint
Oil Passage Type And Quantity: 1 groove outside periphery
Oil Passage Type And Quantity: 10 slot horizontally through ring
Material: iron 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
5740A	Piston Ring
72A759	Piston Ring
R7744	Piston Ring
XQA146	Piston Ring

FAQs

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

What is the FSCG of the NSN 4310-00-062-8190?

The FSCG of the NSN 4310-00-062-8190 is 4310

Does the NSN 4310-00-062-8190 have a Schedule B code assigned?

Yes, the Schedule B code is 8414902095

Does NSN 4310-00-062-8190 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 4310-00-062-8190 contain precious materials?

Precious metal content is unknown

Does NSN 4310-00-062-8190 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 4310-00-062-8190 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Jun 20, 1967