The Nipple,boss, cataloged under National Stock Number 4730-01-295-8517, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Carver Pump Company. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-295-8517 |
| Primary Part Number | 250-0107-320 |
| Item Name | Nipple,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Nominal Overall Length | 1.812 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Connection Type | THREADED EXTERNAL BOSS FIRST END BULKHEAD |
| Style Designator | PLAIN W/ BULKHEAD THREAD |
| Material Document and Classification | QQ-N-281D,CL A OR B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.875 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.875 INCHES FIRST END BULKHEAD IN |
| Thread Class | 2A FIRST END BULKHEAD A |
| Thread Class | 2A ALL ENDS A |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Thread Series Designator | UNF FIRST END BULKHEAD |
| 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 |
|---|---|
| 250-0107-320 PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| F-NGC-0-99-029 | C/1 Advisory reference — outside the item-of-supply concept Carver Pump Company |
| D-09N-0-96-029 | D/9 Drawing number reference only Carver Pump Company |
| D-09N-0-96-029-52 | 5/9 Secondary reference Carver Pump Company |
| A-300-1720-320 | 5/9 Secondary reference Carver Pump Company |
NSN 4730-01-295-8517 is a Nipple,boss, manufactured by Carver Pump Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-295-8517 has 1 manufacturer part number on file: 250-0107-320 (Carver Pump Company).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-496-2163. Verify interchangeability with system specifications before substitution.
Key specifications for 250-0107-320: Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS; Nominal Overall Length: 1.812 INCHES IN; Connection Type: THREADED EXTERNAL BOSS ALL ENDS; Connection Type: THREADED EXTERNAL BOSS FIRST END BULKHEAD. 13 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.