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PartsTable / COMPONENT / 3901A0100S
3901A0100S ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RING,PISTON is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, ring_style: CONCENTRIC, overall_width: 0.1860 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN, radial_wall_thickness: 0.1200 INCHES NOMINAL IN, bore_diameter_oversize: 0.010 INCHES IN, standard_bore_diameter: 2.625 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-406-3003, 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
3901A0100S
NSN: 2805-00-406-3003
FSC: 2805
CAGE: 28265 — HERCULES ENGINE CO INC (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
overall_width0.1860 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN
radial_wall_thickness0.1200 INCHES NOMINAL IN
bore_diameter_oversize0.010 INCHES IN
standard_bore_diameter2.625 INCHES IN
cross-sectional_shape_styleSTRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
oil_passage_type_and_quantity10 HOLE HORIZONTALLY THROUGH RING
NSN2805-00-406-3003
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN 3901A0100S MFR RING,PISTON
KEY FEATURES
•
MATERIAL: IRON OVERALL
•
OIL PASSAGE TYPE AND QUANTITY: 10 HOLE HORIZONTALLY THROUGH RING
•
RADIAL WALL THICKNESS: 0.1200 INCHES NOMINAL IN
•
RING STYLE: CONCENTRIC
•
CROSS-SECTIONAL SHAPE STYLE: STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
•
STANDARD BORE DIAMETER: 2.625 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON OVERALL
OIL PASSAGE TYPE AND QUANTITY10 HOLE HORIZONTALLY THROUGH RING
OIL PASSAGE TYPE AND QUANTITY1 GROOVE OUTSIDE PERIPHERY
RADIAL WALL THICKNESS0.1200 INCHES NOMINAL IN
RING STYLECONCENTRIC
CROSS-SECTIONAL SHAPE STYLESTRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
OVERALL WIDTH0.1860 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN
STANDARD BORE DIAMETER2.625 INCHES IN
BORE DIAMETER OVERSIZE0.010 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
39-01-AInterchangeable
interchangeable cross-reference
interchangeable
39-1AInterchangeable
interchangeable cross-reference
interchangeable
3901A010Interchangeable
Same NIIN cross-reference
interchangeable
3901A01005Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3901A0100S?
3901A0100S is a RING,PISTON.
What parts can replace 3901A0100S?
There are 4 known substitutes for 3901A0100S: 39-01-A, 39-1A, 3901A010 and 1 more. Substitute compatibility should be verified for your specific system.
Is 3901A0100S still available?
3901A0100S is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026