The Guide,valve Stem, cataloged under National Stock Number 2810-00-119-0202, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-119-0202 |
| Primary Part Number | 39523 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| FSC Application Data | ACFT ENG R985 |
| Aa End Chamfer Angle in Deg | 45.0 |
| Aa End Chamfer Length | 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Major Diameter Length | 0.086 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Bb End Shank Diameter | 0.751 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Countersink Length | 0.020 INCHES MINIMUM IN |
| Countersink Length | 0.040 INCHES MAXIMUM IN |
| Bore Diameter | 0.5475 INCHES MINIMUM AND 0.5505 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Shoulder First Fillet Radius | 0.037 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN |
| Metallic Hardness Rating | 85.0 MINIMUM ROCKWELL F |
| Bore Countersink | INCLUDED |
| Countersink Location | AA END |
| 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 |
|---|---|
| 39523 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
| Reference | Meaning |
|---|---|
| 2810L20-014 | 5/2 Secondary reference U.S. Government activity |
| AS39523 | 5/9 Secondary reference Aircraft Supplies |
| 2810L20-014-3 | 5/2 Secondary reference U.S. Government activity |
| 39523 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 2810-00-119-0202 is a Guide,valve Stem, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-119-0202 has 1 manufacturer part number on file: 39523 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
1 possible match (shared part number, not a government interchangeability claim): 5315-00-432-1601. Verify interchangeability with system specifications before substitution.
Key specifications for 39523: Countersink Angle in Deg: 45.0; FSC Application Data: ACFT ENG R985; Aa End Chamfer Angle in Deg: 45.0; Aa End Chamfer Length: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN. 17 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.