AH8-439

View detailed technical data, stock status, and sourcing information for: AH8-439
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Federal Supply Group

Pumps and Compressors

Federal Supply Classification

4310 Compressors and Vacuum Pumps

National Stock Number

4310-00-608-8521

Item Name Code

22220

Assigment Date

01/01/1963 (63 years ago)

2.703 inches minimum and 2.750 inches maximum overall height, flat head style, 3.450 inches minimum and 3.500 inches maximum diameter, slot oil passage type, 0.6248 inches minimum and 0.6250 inches maximum pinhole diameter

Product Characteristics

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

Head Style: flat
Overall Height: 2.703 inches minimum and 2.750 inches maximum
Diameter: 3.450 inches minimum and 3.500 inches maximum
Oil Passage Type: slot
Pinhole Diameter: 0.6248 inches minimum and 0.6250 inches maximum
Surface Finish: finished
Finished Size Designation: standard
Skirt Type: solid
Skirt Bottom Cutaway Feature: not included
Ring Groove Quantity: 4
Ring Groove Position: no.1 no. 2,no. 3 and no. 4 positions
Ring Groove Width: 0.1875 inches minimum and 0.1885 inches maximum and 0.1255 inches minimum and 0.1265 inches maximum
Ring Groove Diameter: 3.100 inches minimum and 3.110 inches maximum and 3.140 inches minimum and 3.150 inches maximum
Ring Groove Position Below Piston Pin: no.4 ring groove
Oil Groove: not included
Distance From Pin Hole Center To Extreme Top: 1.4340 inches minimum and 1.4410 inches maximum
Pin Hole Bushing: not included
Distance Between Pin Bosses: 1.500 inches nominal
Retaining Ring Groove: included
Pin: included
Pin Type For Which Designed: locked
Ring: not included
Integral Connecting Rod: not included
Material: aluminum alloy or aluminum
Surface Treatment: tin
Fsc Application Data: air compressor,stationary

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4310-00-829-8490	No Name Available	11/01/1979

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
AH8-439	Compressor Piston
P80896	Compressor Piston

FAQs

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

What is the FSCG of the NSN 4310-00-608-8521?

The FSCG of the NSN 4310-00-608-8521 is 4310

Does the NSN 4310-00-608-8521 have a Schedule B code assigned?

Yes, the Schedule B code is 8414909000

Does NSN 4310-00-608-8521 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 4310-00-608-8521 contain precious materials?

Precious metal content is unknown

Does NSN 4310-00-608-8521 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 4310-00-608-8521 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963