The Guide,valve Stem, cataloged under National Stock Number 2810-00-672-9558, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-672-9558 |
| Primary Part Number | 87208P50 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| FSC Application Data | ACFT ENG R1830 |
| Aa End Chamfer Angle in Deg | 45.0 |
| Aa End Chamfer Length | 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| Major Diameter Length | 0.066 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Bb End Shank Diameter | 0.8635 INCHES MINIMUM AND 0.8645 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | AMS 4846 ASSN STD 1ST MATERIAL RESPONSE |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Bore Diameter | 0.6150 INCHES MINIMUM AND 0.6180 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 905 |
| Shoulder First Fillet Radius | 0.010 INCHES NOMINAL IN |
| Metallic Hardness Rating | 85.0 NOMINAL ROCKWELL F |
| Bore Countersink | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2810-00-672-9558 is a Guide,valve Stem, 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 2810-00-672-9558 has 2 manufacturer part numbers on file: 87208P50 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 87208P50 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
Key specifications for 87208P50: FSC Application Data: ACFT ENG R1830; Aa End Chamfer Angle in Deg: 45.0; Aa End Chamfer Length: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN; Major Diameter Length: 0.066 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN. 14 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.