The Spacer,fuel Pump Dr, cataloged under National Stock Number 2840-00-055-6473, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2840-00-055-6473 |
| Primary Part Number | 473657 |
| Item Name | Spacer,fuel Pump Dr |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL AMS 5504,1.145 MIN 1.165 MAX IN. OD FREE STATE,1.140 MIN 1.150 MAX IN. OD RESTRAINED,0.860 MIN 0.900 MAX IN. LG,0.022 MIN 0.028 MAX IN. WALL THK,ROCKWELL C35-40 HARDNESS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 473657 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 2840-00-055-6473 is a Spacer,fuel Pump Dr, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-055-6473 has 1 manufacturer part number on file: 473657 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5945-00-112-4446, 4310-00-585-3614. Verify interchangeability with system specifications before substitution.
Key specifications for 473657: General Characteristics Item Description: STEEL AMS 5504,1.145 MIN 1.165 MAX IN. OD FREE STATE,1.140 MIN 1.150 MAX IN. OD RESTRAINED,0.860 MIN 0.900 MAX IN. LG,0.022 MIN 0.028 MAX IN. WALL THK,ROCKWELL C35-40 HARDNESS; End Item Identification: ACFT ENG TF33. 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.