The Guide,valve Stem, cataloged under National Stock Number 2810-00-513-0033, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-513-0033 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Status | ACTIVE |
| Shoulder Second Fillet Radius | 0.020 INCHES NOMINAL IN |
| Countersink Angle in Deg | 60.0 |
| FSC Application Data | ENGINE,AIRCRAFT,RECIPROCATING |
| Aa End Chamfer Angle in Deg | 8.0 |
| Countersink Diameter | 0.420 INCHES NOMINAL IN |
| Aa End Chamfer Length | 0.090 INCHES NOMINAL IN |
| Major Diameter Length | 0.095 INCHES NOMINAL IN |
| Bb End Shank Diameter | 0.590 INCHES NOMINAL IN |
| Style Designator | PLAIN-SHOULDERED |
| Material Document and Classification | LYCOMING-SPENCER DIV OF AVCO,LUMEN NO. 48 MFR REF SINGLE MATERIAL RESPONSE |
| Bore Counterbore | NOT INCLUDED |
| Outside Diameter | 0.813 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.030 INCHES NOMINAL IN |
| Length From Aa End to Largest Diameter Face | 1.560 INCHES NOMINAL IN |
| Aa End Diameter | 0.6033 INCHES MINIMUM AND 0.6038 INCHES MAXIMUM IN |
| Bb End Chamfer Angle in Deg | 45.0 |
| Bore Diameter | 0.3950 INCHES MINIMUM AND 0.3970 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Shoulder First Fillet Radius | 0.020 INCHES NOMINAL IN |
| Metallic Hardness Rating | 80.0 MINIMUM ROCKWELL F |
| Bore Countersink | INCLUDED |
| Countersink Location | AA END AND BB END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 76943P10 | 3/2 Design control — primary reference U.S. Government activity |
| 60028P010 | 5/9 Secondary reference U.S. Government activity |
NSN 2810-00-513-0033 is a Guide,valve Stem, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
Key specifications for 2810-00-513-0033: Shoulder Second Fillet Radius: 0.020 INCHES NOMINAL IN; Countersink Angle in Deg: 60.0; FSC Application Data: ENGINE,AIRCRAFT,RECIPROCATING; Aa End Chamfer Angle in Deg: 8.0. 22 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.