PartsTable
Technical Data Sheet
Download PDF

PST189A — PISTON,COMPRESSOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

PST189A: PISTON,COMPRESSOR.

The PISTON,COMPRESSOR is a the manufacturer industrial component. Key specifications include diameter: 3.109 INCHES NOMINAL IN, material: STEEL, head_style: FLAT, oil_groove: INCLUDED, skirt_type: SOLID, overall_height: 3.219 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-00-706-7747, 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
PST189A
NSN: 4310-00-706-7747
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
diameter3.109 INCHES NOMINAL IN
materialSTEEL
head_styleFLAT
oil_grooveINCLUDED
skirt_typeSOLID
overall_height3.219 INCHES NOMINAL IN
surface_finishFINISHED
oil_passage_typeHOLE
pin_hole_bushingNOT INCLUDED
pinhole_diameter0.500 INCHES NOMINAL IN
ring_groove_width0.125 INCHES NOMINAL IN
ring_groove_diameter2.797 INCHES NOMINAL IN
NSN4310-00-706-7747
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON,COMPRESSOR TITLE COMPONENT PN PST189A MFR PISTON,COMPRESSOR
KEY FEATURES
•
RING GROOVE WIDTH: 0.125 INCHES NOMINAL IN
•
DISTANCE BETWEEN PIN BOSSES: 1.375 INCHES NOMINAL IN
•
INTEGRAL CONNECTING ROD: NOT INCLUDED
•
RETAINING RING GROOVE: INCLUDED
•
SURFACE FINISH: FINISHED
•
RING GROOVE POSITION AND QUANTITY: NO.1,AND NO.2 POSITIONS PISTON
•
OIL PASSAGE TYPE: HOLE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT3.219 INCHES NOMINAL IN
RING GROOVE WIDTH0.125 INCHES NOMINAL IN
DISTANCE BETWEEN PIN BOSSES1.375 INCHES NOMINAL IN
INTEGRAL CONNECTING RODNOT INCLUDED
RETAINING RING GROOVEINCLUDED
SURFACE FINISHFINISHED
RING GROOVE POSITION AND QUANTITYNO.1,AND NO.2 POSITIONS PISTON
OIL PASSAGE TYPEHOLE
DIAMETER3.109 INCHES NOMINAL IN
RING GROOVE DIAMETER2.797 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy PST189A?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is PST189A?
PST189A is a PISTON,COMPRESSOR.
What is the NSN for PST189A?
PST189A is cataloged in the U.S. Government catalog under NSN 4310-00-706-7747. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — PST189A

✓ 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.