The Cap,filler Opening, cataloged under National Stock Number 2930-00-809-9796, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Thermal Engineering International (usa) Inc.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2930-00-809-9796 |
| Primary Part Number | G6439 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | Thermal Engineering International (usa) Inc. |
| Status | ACTIVE |
| Accommodation Type | KNURLED END GRIPPING |
| Thread Length | 0.313 INCHES NOMINAL IN |
| Style Designator | THREADED TYPE-INTERNAL |
| Filler Neck Diameter for Which Designed | 3.000 INCHES NOMINAL IN |
| Thread Diameter | 2.000 INCHES NOMINAL IN |
| Outside Diameter | 3.563 INCHES NOMINAL IN |
| System for Which Designed | NONPRESSURIZED |
| Thread Class | 1A A |
| Material | COPPER ALLOY 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 |
| Part Number | Manufacturer |
|---|---|
| G6439 PRIMARY | Thermal Engineering International (usa) Inc. (USA) |
| Reference | Meaning |
|---|---|
| G6439 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
NSN 2930-00-809-9796 is a Cap,filler Opening, manufactured by Thermal Engineering International (usa) Inc., classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-00-809-9796 has 1 manufacturer part number on file: G6439 (Thermal Engineering International (usa) Inc.).
Key specifications for G6439: Overall Height: 1.125 INCHES NOMINAL IN; Accommodation Type: KNURLED END GRIPPING; Thread Length: 0.313 INCHES NOMINAL IN; Style Designator: THREADED TYPE-INTERNAL. 11 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.