The Disk Subassembly, cataloged under National Stock Number 4420-00-030-8031, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Newterra Corporation, Inc.. Government technical data includes 1 specification, 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 | 4420-00-030-8031 |
| Primary Part Number | 158334PC3 |
| Item Name | Disk Subassembly |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Newterra Corporation, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF CYLINDER 1,DISK PLATE 1,HUB 1,RIBS 8,RING 2,CYLINDER MATERIAL MONEL K-500,CYLINDER DIMENSIONS 23.625 IN. ID BY2.875 IN. OD BY 18.250 IN. HIGH,DISK PLATE MATERIAL NICKELCOPPER ALLOY ASTM B 127 ANNEALED,DISK PLATE DIMENSIONS 24.000 IN.OD BY 0.3125 IN. THK BY 24.000 IN. RADIUS,HUB MATERIAL NICKELCOPPER ALLOY ASTM B 164 CLASS A ANNEALED,HUB DIMENSIONS 11.750 IN.DIA BY 4.250 IN. THK,RIB MATERIAL NICKEL COPPER ALLOY QQ-N-281CLASS A ANNEALED,RING MATERIAL COPPER NICKEL ALLOY ASTM B 164CLASS A ANNEALED,RING DIMENSIONS 25.000 IN. ID BY 30.000 IN. OD BY0.750 IN. THK IN |
| 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 |
|---|---|
| 158334PC3 PRIMARY | Newterra Corporation, Inc. (USA) |
NSN 4420-00-030-8031 is a Disk Subassembly, manufactured by Newterra Corporation, Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-00-030-8031 has 1 manufacturer part number on file: 158334PC3 (Newterra Corporation, Inc.).
Key specifications for 158334PC3: General Characteristics Item Description: CONSISTS OF CYLINDER 1,DISK PLATE 1,HUB 1,RIBS 8,RING 2,CYLINDER MATERIAL MONEL K-500,CYLINDER DIMENSIONS 23.625 IN. ID BY2.875 IN. OD BY 18.250 IN. HIGH,DISK PLATE MATERIAL NICKELCOPPER ALLOY ASTM B 127 ANNEALED,DISK PLATE DIMENSIONS 24.000 IN.OD BY 0.3125 IN. THK BY 24.000 IN. RADIUS,HUB MATERIAL NICKELCOPPER ALLOY ASTM B 164 CLASS A ANNEALED,HUB DIMENSIONS 11.750 IN.DIA BY 4.250 IN. THK,RIB MATERIAL NICKEL COPPER ALLOY QQ-N-281CLASS A ANNEALED,RING MATERIAL COPPER NICKEL ALLOY ASTM B 164CLASS A ANNEALED,RING DIMENSIONS 25.000 IN. ID BY 30.000 IN. OD BY0.750 IN. THK IN. 1 specification is 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.