The Cap,filler Opening, cataloged under National Stock Number 2930-00-293-5929, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2930-00-293-5929 |
| Primary Part Number | 4-207-1 |
| Item Name | Cap,filler Opening |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| FSC Application Data | ENGINE COOLING SYSTEM |
| Accommodation Type | KNURLED END GRIPPING |
| Outside Diameter | 2.812 INCHES NOMINAL IN |
| Cam Quantity | 2 |
| System for Which Designed | PRESSURIZED |
| Surface Treatment | CADMIUM OVERALL |
| Maximum Working Pressure | 7.000 POUNDS PER SQUARE INCH (PSI) LBS |
| Special Markings | TURN DOWN TIGHT-REMOVE SLOWLY |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 4-207-1 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
| Reference | Meaning |
|---|---|
| 850579 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 850765 | 5/9 Secondary reference General Motors Corp |
| 850765 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 850579 | 5/9 Secondary reference General Motors Corp |
| 850579 | 5/9 Secondary reference General Motors Llc Dba General Motors |
| 850765 | 5/9 Secondary reference General Motors Llc Dba General Motors |
NSN 2930-00-293-5929 is a Cap,filler Opening, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-00-293-5929 has 1 manufacturer part number on file: 4-207-1 (Dresser Industries Inc Leroi Div).
7 possible matches (shared part number, not a government interchangeability claim): 5960-00-307-3963, 2530-00-770-1469, 5950-00-817-7347. Verify interchangeability with system specifications before substitution.
Key specifications for 4-207-1: Overall Height: 0.937 INCHES NOMINAL IN; FSC Application Data: ENGINE COOLING SYSTEM; Accommodation Type: KNURLED END GRIPPING; Outside Diameter: 2.812 INCHES NOMINAL IN. 9 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.