The Adapter,hydraulic B, cataloged under National Stock Number 2590-01-466-0393, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2590-01-466-0393 |
| Primary Part Number | 12373446 |
| Item Name | Adapter,hydraulic B |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| Status | ACTIVE |
| Overall Diameter | 1.410 INCHES MAXIMUM IN |
| General Characteristics Item Description | L1ST END CHAMFERED W/.75"-16UNF EXTERNAL THREADS; TWO .189"HOLES DRILLED .64" FROM END; HOLES DRILLED @ 90 DEG ANGLES TO FORM CROSS; 2ND END .75"-16UNF INTERNAL THREADS; FLUID CANNOT FLOW BETWEEN 1ST AND 2ND ENDS |
| Specification/standard Data | ASTM-A322 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND ASTM-A331 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | CADMIUM |
| Material | STEEL |
| Thread Size and Series/type Designator | 0.750-16 UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12373446 | General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc (USA) |
| 12373446 PRIMARY | Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA) |
| Reference | Meaning |
|---|---|
| 12373446 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12373446 | 5/9 Secondary reference General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
NSN 2590-01-466-0393 is a Adapter,hydraulic B, manufactured by Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-01-466-0393 has 2 manufacturer part numbers on file: 12373446 (General Dynamics Land Systems Customer Service & Support Company Div General Dynamics Land Systems Inc), 12373446 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service).
Key specifications for 12373446: Overall Diameter: 1.410 INCHES MAXIMUM IN; General Characteristics Item Description: L1ST END CHAMFERED W/.75"-16UNF EXTERNAL THREADS; TWO .189"HOLES DRILLED .64" FROM END; HOLES DRILLED @ 90 DEG ANGLES TO FORM CROSS; 2ND END .75"-16UNF INTERNAL THREADS; FLUID CANNOT FLOW BETWEEN 1ST AND 2ND ENDS; Overall Length: 2.730 INCHES MINIMUM AND 2.790 INCHES MAXIMUM IN; Specification/standard Data: ASTM-A322 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND ASTM-A331 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.