The Cap,filler Opening, cataloged under National Stock Number 2930-00-293-5925, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2930-00-293-5925 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Status | ACTIVE |
| Accommodation Type | HEXAGON END GRIPPING |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Style Designator | VENTED THREADED TYPE (INTERNAL) |
| Filler Neck Diameter for Which Designed | 3.875 INCHES NOMINAL IN |
| Thread Diameter | 3.875 INCHES NOMINAL IN |
| Outside Diameter | 4.750 INCHES NOMINAL IN |
| Features Provided | BREATHER HOLE |
| System for Which Designed | NONPRESSURIZED |
| Thread Class | 2B |
| Material | IRON OVERALL |
| Thread Series Designator | UN |
| Thread Quantity | 12.000 PER INCH |
| 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 |
|---|---|
| S-6913 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2930-00-293-5925 is a Cap,filler Opening, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
Key specifications for 2930-00-293-5925: Overall Height: 1.000 INCHES NOMINAL IN; Accommodation Type: HEXAGON END GRIPPING; Thread Length: 0.375 INCHES NOMINAL IN; Style Designator: VENTED THREADED TYPE (INTERNAL). 12 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.