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AF561 — PISTON,COMPRESSOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

AF561: PISTON,COMPRESSOR.

The PISTON,COMPRESSOR is a the manufacturer industrial component. Key specifications include diameter: 2.343 INCHES NOMINAL IN, material: ALUMINUM, head_style: FLAT, oil_groove: NOT INCLUDED, skirt_type: SOLID, overall_height: 1.671 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-00-463-2830, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AF561
NSN: 4310-00-463-2830
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 24123 — GAST MFG CORP (USA)
SPECIFICATIONS
diameter2.343 INCHES NOMINAL IN
materialALUMINUM
head_styleFLAT
oil_grooveNOT INCLUDED
skirt_typeSOLID
overall_height1.671 INCHES NOMINAL IN
surface_finishFINISHED
pin_hole_bushingNOT INCLUDED
pinhole_diameter0.500 INCHES NOMINAL IN
special_featuresFURN W/PRELUBRICATED SEAL ON SHAFT END
ring_groove_width0.125 INCHES NOMINAL IN
ring_groove_diameter2.078 INCHES NOMINAL IN
NSN4310-00-463-2830
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON,COMPRESSOR TITLE COMPONENT PN AF561 MFR PISTON,COMPRESSOR
KEY FEATURES
•
RING GROOVE WIDTH: 0.125 INCHES NOMINAL IN
•
DISTANCE BETWEEN PIN BOSSES: 1.5000 INCHES NOMINAL IN
•
INTEGRAL CONNECTING ROD: INCLUDED
•
RETAINING RING GROOVE: NOT INCLUDED
•
SURFACE FINISH: FINISHED
•
RING GROOVE POSITION AND QUANTITY: NO. 1,AND NO. 2 POSITIONS PISTON
•
DIAMETER: 2.343 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.671 INCHES NOMINAL IN
RING GROOVE WIDTH0.125 INCHES NOMINAL IN
DISTANCE BETWEEN PIN BOSSES1.5000 INCHES NOMINAL IN
INTEGRAL CONNECTING RODINCLUDED
RETAINING RING GROOVENOT INCLUDED
SURFACE FINISHFINISHED
RING GROOVE POSITION AND QUANTITYNO. 1,AND NO. 2 POSITIONS PISTON
DIAMETER2.343 INCHES NOMINAL IN
RING GROOVE DIAMETER2.078 INCHES NOMINAL IN
DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP1.093 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4310 — Compressors and Vacuum Pumps
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4310-00-000-0050 4310-00-001-0059 4310-00-001-2044 4310-00-001-3477 4310-00-001-3493 4310-00-001-6194 4310-00-001-6381 4310-00-001-7755
SUBSTITUTES & CROSS-REFERENCES 1
A23640-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AF561?
AF561 is a PISTON,COMPRESSOR.
What parts can replace AF561?
There is 1 known substitute for AF561: A23640-1. Substitute compatibility should be verified for your specific system.
What is the NSN for AF561?
AF561 is cataloged in the U.S. Government catalog under NSN 4310-00-463-2830. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.