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2556N — PIN,PISTON

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2556N: PIN,PISTON.

The PIN,PISTON is a the manufacturer industrial component. Key specifications include material: STEEL, body_style: PLAIN ENDS, bore_style: STRAIGHT-THRU BORE, body_length: 3.0000 INCHES NOMINAL IN, bore_diameter: 0.6250 INCHES NOMINAL IN, outside_diameter: 1.00000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4310-00-577-9136, 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
2556N
NSN: 4310-00-577-9136
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL
body_stylePLAIN ENDS
bore_styleSTRAIGHT-THRU BORE
body_length3.0000 INCHES NOMINAL IN
bore_diameter0.6250 INCHES NOMINAL IN
outside_diameter1.00000 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
NSN4310-00-577-9136
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PIN,PISTON TITLE COMPONENT PN 2556N MFR PIN,PISTON
KEY FEATURES
•
BODY STYLE: PLAIN ENDS
•
BORE STYLE: STRAIGHT-THRU BORE
•
OUTSIDE DIAMETER: 1.00000 INCHES NOMINAL IN
•
BODY LENGTH: 3.0000 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
BORE DIAMETER: 0.6250 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
BODY STYLEPLAIN ENDS
BORE STYLESTRAIGHT-THRU BORE
OUTSIDE DIAMETER1.00000 INCHES NOMINAL IN
BODY LENGTH3.0000 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
BORE DIAMETER0.6250 INCHES NOMINAL IN
MATERIALSTEEL
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
HL19884PC17Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2556N?
2556N is a PIN,PISTON.
What parts can replace 2556N?
There is 1 known substitute for 2556N: HL19884PC17. Substitute compatibility should be verified for your specific system.
What is the NSN for 2556N?
2556N is cataloged in the U.S. Government catalog under NSN 4310-00-577-9136. 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.