The Guide,engine Poppet Valve Tappet, cataloged under National Stock Number 2810-00-331-6492, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; 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 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2810-00-331-6492 |
| Primary Part Number | 222894R1 |
| Item Name | Guide,engine Poppet Valve Tappet |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Thread Provision | THREADED |
| Thread Size | 1.375-20 |
| Screw Thread Series Designator | UNS |
| Material | ALUMINUM ALLOY 2017 |
| 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 |
|---|---|
| 222894R1 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 222894R001 | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 222894R001 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 222894R1 | 5/9 Secondary reference Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
NSN 2810-00-331-6492 is a Guide,engine Poppet Valve Tappet, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-331-6492 has 2 manufacturer part numbers on file: 222894R1 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 222894R001 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 222894R1: Thread Provision: THREADED; Overall Length: 4.736 INCHES NOMINAL IN; Thread Size: 1.375-20; Special Features: MAIN BODY OD VARIES FM 1.135 IN. MIN & 1.136 IN. MAX TO 1.141 IN. MIN & 1.142 IN. MAX; FIRST END 1.052 IN. MIN & 1.072 IN. MAX OD BY 0.666 IN. LG; SECOND END EXTERNALLY THD 0.96 IN. MIN & 0.98 IN. MAX LG; FOR FRONT EXHAUST VALVE TAPPET IN. 4 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.