The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-00-528-2779, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fwd Seagrave Holdings Lp. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-528-2779 |
| Primary Part Number | 17A41023 |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fwd Seagrave Holdings Lp |
| Status | ACTIVE |
| 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 |
|---|---|
| 17A41023 PRIMARY | Fwd Seagrave Holdings Lp (USA) |
| 5282779 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 24W0315 PRIMARY | Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA) |
| 41023 | Zenith Fuel Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 130740H | 3/2 Design control — primary reference U.S. Government activity |
| 41023 | 5/9 Secondary reference Bendix Corp the Brake and Steering Div |
| 408057 | 3/9 Design control — primary reference White Motor Corp |
| 2176586 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 41023 | 3/2 Design control — primary reference U.S. Government activity |
| 2176586 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| GTB2418 | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| 41023 | 5/9 Secondary reference Diamond Reo Truck Co |
| GTB2418 | 5/9 Secondary reference Ford Motor Company |
NSN 4820-00-528-2779 is a Valve,bleeder,hydraulic System, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-528-2779 has 4 manufacturer part numbers on file: 17A41023 (Fwd Seagrave Holdings Lp), 5282779 (U S Army Tank Automotive Command Amsta-Im-Mm), 24W0315 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), 41023 (Zenith Fuel Systems Llc).
3 possible matches (shared part number, not a government interchangeability claim): 3455-01-167-4490, 5930-01-368-3100, 8465-01-589-0890. Verify interchangeability with system specifications before substitution.
Key specifications for 17A41023: Special Features: STEEL,SPEC DATA,SAE,1112; ZINC DICHROMATE FINISH; CASEHARDENED; DIM. DATA,1.06 IN. LG OVER-ALL,0.43 IN ACROSS HEX FLATS,0.18 IN. LG HEX,0.88 IN. FROM VALVE END TO NEAREST HEX SHOULDER; THD TYPE HOSE CONNECTOR,THD DATA,NO. 10-32,NF,RH,CLASS 2 FIT,0.44 IN. LG; VALVE SEAT END DATA,0.271 IN. MIN 0.281 IN. MAX LARGEST OD OF TAPER,0.120 IN. LG TAPER,0.280 IN. LG EXCL THD PORTION,0.230 IN. FROM CENTER OF INLET HOLE TO VALVE END,1/16 IN. DIA INLET HOLE,EXTERNAL THD DATA,3/8-24,UNF OR NF,RH,CLASS 2A THD OR CLASS 2 FIT,0.470 IN. LG; DRAIN HOLE DATA,0.147 IN. DIA,0.880 IN. LG A. 0 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.