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Technical Data Sheet
M1904BJ ✓ 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, joint_style: INTERLOCKING JOINT, overall_width: 0.9250 INCHES MINIMUM AND 0.9350 INCHES MAXIMUM IN, fsc_application_data: AIR COMPRESSOR, radial_wall_thickness: 0.0590 INCHES MINIMUM AND 0.0690 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-762-4208, 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
M1904BJ
NSN: 4310-00-762-4208
FSC: 4310
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
joint_styleINTERLOCKING JOINT
overall_width0.9250 INCHES MINIMUM AND 0.9350 INCHES MAXIMUM IN
fsc_application_dataAIR COMPRESSOR
radial_wall_thickness0.0590 INCHES MINIMUM AND 0.0690 INCHES MAXIMUM IN
standard_bore_diameter1.500 INCHES IN
cross-sectional_shape_styleSTRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
oil_passage_type_and_quantity6 HOLE VERTICALLY THROUGH RING
NSN4310-00-762-4208
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN M1904BJ MFR RING,PISTON
KEY FEATURES
OIL PASSAGE TYPE AND QUANTITY: 6 HOLE VERTICALLY THROUGH RING
JOINT STYLE: INTERLOCKING JOINT
STANDARD BORE DIAMETER: 1.500 INCHES IN
FSC APPLICATION DATA: AIR COMPRESSOR
MATERIAL: IRON OVERALL
RADIAL WALL THICKNESS: 0.0590 INCHES MINIMUM AND 0.0690 INCHES MAXIMUM IN
RING STYLE: CONCENTRIC
TECHNICAL CHARACTERISTICS (FLIS)
OIL PASSAGE TYPE AND QUANTITY6 HOLE VERTICALLY THROUGH RING
JOINT STYLEINTERLOCKING JOINT
STANDARD BORE DIAMETER1.500 INCHES IN
FSC APPLICATION DATAAIR COMPRESSOR
MATERIALIRON OVERALL
RADIAL WALL THICKNESS0.0590 INCHES MINIMUM AND 0.0690 INCHES MAXIMUM IN
OVERALL WIDTH0.9250 INCHES MINIMUM AND 0.9350 INCHES MAXIMUM IN
RING STYLECONCENTRIC
CROSS-SECTIONAL SHAPE STYLESTRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
DD102Interchangeable
interchangeable cross-reference
interchangeable
34321Interchangeable
interchangeable cross-reference
interchangeable
8438501-2Interchangeable
interchangeable cross-reference
interchangeable
59123AInterchangeable
interchangeable cross-reference
interchangeable
A1-3722X674Interchangeable
interchangeable cross-reference
interchangeable
SMP-38-59Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M1904BJ?
M1904BJ is a RING,PISTON.
What parts can replace M1904BJ?
There are 7 known substitutes for M1904BJ: DD102, 34321, 8438501-2 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M1904BJ?
M1904BJ is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-762-4208. This indicates validated use in U.S. government and defense supply chains.
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