The Cap,filler Opening, cataloged under National Stock Number 2930-00-451-9219, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2930-00-451-9219 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Status | ACTIVE |
| Accommodation Type | PLAIN END GRIPPING |
| Thread Length | 0.440 INCHES NOMINAL IN |
| Thread Diameter | 3.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.750 INCHES NOMINAL IN |
| Features Provided | BREATHER HOLE |
| System for Which Designed | NONPRESSURIZED |
| Thread Class | 2A A |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 2587688 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2930-00-451-9219 is a Cap,filler Opening, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
Key specifications for 2930-00-451-9219: Overall Height: 2.750 INCHES NOMINAL IN; Accommodation Type: PLAIN END GRIPPING; Thread Length: 0.440 INCHES NOMINAL IN; Thread Diameter: 3.250 INCHES NOMINAL IN. 10 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.