PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M1904BJRing,piston

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 4310-00-762-4208 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-762-4208 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-762-4208. Primary manufacturer part number: M1904BJ.
Features
  • Ring,piston — FSC 4310
  • 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
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-762-4208, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-762-4208
Primary Part NumberM1904BJ
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
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
Ring StyleCONCENTRIC
Cross-Sectional Shape StyleSTRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5940-00-280-980719215-0034 INTERCHANGEABLE
Splice,conductor
Molex-Etc Inc Sub of Molex Inc
2805-00-356-171459123A INTERCHANGEABLE
Ring,piston
Brinkley Technology Group Llc Dba Hercules Manufacturing
2530-00-717-0152A1-3722X674 INTERCHANGEABLE
Brake Shoe
Meritor Heavy Vehicle Systems, Llc
6695-01-025-85153432-1 INTERCHANGEABLE
Holder,jewel
Kearflex Engineering Company
3110-01-290-804434321 INTERCHANGEABLE
Ball,bearing
Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division
Cross-Reference Index
Part NumberManufacturer
3119004R1 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
3119004R1 Komatsu American Intl Co (USA)
M1904BJ PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
34321 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
Related Parts
5940-00-280-9807INTERCHANGEABLE
SPLICE,CONDUCTOR
19215-0034
2805-00-356-1714INTERCHANGEABLE
RING,PISTON
59123A
2530-00-717-0152INTERCHANGEABLE
BRAKE SHOE
A1-3722X674
6695-01-025-8515INTERCHANGEABLE
HOLDER,JEWEL
3432-1
3110-01-290-8044INTERCHANGEABLE
BALL,BEARING
34321

Frequently Asked Questions

What is NSN 4310-00-762-4208?

NSN 4310-00-762-4208 is a Ring,piston, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-762-4208?

NSN 4310-00-762-4208 has 4 cross-referenced part numbers: 3119004R1 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 3119004R1 (Komatsu American Intl Co), M1904BJ (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 34321 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).

What NSN replaces 4310-00-762-4208?

There are 5 known substitutes for 4310-00-762-4208: 5940-00-280-9807, 2805-00-356-1714, 2530-00-717-0152 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M1904BJ?

Key specifications for M1904BJ: 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. 9 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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