The Ring,wearing, cataloged under National Stock Number 4320-01-184-1897, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-184-1897 |
| Primary Part Number | 12334968 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Corner Shape | CHAMFERED ALL CORNERS |
| Chamfer Length | 0.190 INCHES MINIMUM AND 0.220 INCHES MAXIMUM ALL CORNERS IN |
| Body Style | PLAIN |
| Body Outside Diameter | 25.190 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 22.000 INCHES NOMINAL IN |
| Mounting Hole Nominal Thread Size | 0.313 INCHES IN |
| Bolt Hole Quantity | 20 |
| Bolt Circle Diameter | 23.188 INCHES NOMINAL IN |
| Chamfer Angle | 45.0 DEGREES NOMINAL ALL CORNERS |
| Material | STEEL |
| Mounting Hole Thread Series Designator | 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 |
|---|---|
| 12334968 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 4320-01-184-1897 is a Ring,wearing, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-184-1897 has 1 manufacturer part number on file: 12334968 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12334968: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Corner Shape: CHAMFERED ALL CORNERS; Chamfer Length: 0.190 INCHES MINIMUM AND 0.220 INCHES MAXIMUM ALL CORNERS IN; Body Style: PLAIN. 13 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.