The Adapter,straight,hose to Boss, cataloged under National Stock Number 4730-01-150-5409, 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 Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-150-5409 |
| Primary Part Number | S2178-50 |
| Item Name | Adapter,straight,hose to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-26074,CL 3 OR 4,GRADEB MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | SOCKET (HOSE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.500 INCHES FIRST END IN |
| Nominal Outside Diameter Hose Accommodated | 0.922 INCHES FIRST END IN |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | UNTHREADED INTERNAL HOSE FIRST END |
| Material Document and Classification | QQ-A-225 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-591 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 1.875 INCHES SECOND END IN |
| Surface Treatment | NICKEL OVERALL |
| Thread Class | 2A SECOND END A |
| Thread Quantity Per Inch | 18 SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNS SECOND END |
| 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 |
|---|---|
| S2178-50 PRIMARY | Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc (USA) |
| 13142701-1 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 13142701 | D/9 Drawing number reference only Us Army Aviation and Missile Command |
| 2178-50 | 5/9 Secondary reference Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc |
NSN 4730-01-150-5409 is a Adapter,straight,hose to Boss, manufactured by Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-150-5409 has 2 manufacturer part numbers on file: S2178-50 (Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc), 13142701-1 (Us Army Aviation and Missile Command).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-152-0631, 4320-01-377-7097. Verify interchangeability with system specifications before substitution.
Key specifications for S2178-50: Surface Treatment Document and Classification: MIL-C-26074,CL 3 OR 4,GRADEB MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: SOCKET (HOSE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.500 INCHES FIRST END IN. 15 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.