The Screw,adjusting,valve Tappet, cataloged under National Stock Number 2805-00-718-8542, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2805-00-718-8542 |
| Item Name | Screw,adjusting,valve Tappet |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| End Length | 0.335 INCHES NOMINAL IN |
| Thread Series | UNF |
| Style Designator | SPHERICAL HEAD, STRAIGHT THREAD, SLOT DRIVE |
| End Largest Diameter | 0.555 INCHES NOMINAL IN |
| Thread Length | 1.125 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | CASEHARDENED |
| Slot Depth | 0.100 INCHES NOMINAL IN |
| Thread Size | 0.438-20 |
| End Spherical Radius | 0.265 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Material | STEEL |
| Slot Width | 0.062 INCHES NOMINAL IN |
| Smallest Diameter | 0.350 INCHES NOMINAL IN |
| 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 |
|---|---|
| 417GC13P | 5/9 Secondary reference U.S. Government activity |
| 417GC13BP2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-718-8542 is a Screw,adjusting,valve Tappet, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-00-718-8542: End Length: 0.335 INCHES NOMINAL IN; Thread Series: UNF; Style Designator: SPHERICAL HEAD, STRAIGHT THREAD, SLOT DRIVE; Overall Length: 1.692 INCHES NOMINAL 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.