The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-173-1884, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-173-1884 |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | CANCELLED |
| Furnished Items and Quantity | 1 PREFORMED PACKING AND 1 TUBE COUPLING NUT W/SLEEVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Nominal Overall Length | 1.130 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 96906-MS51843 GOVERNMENT STANDARD |
| Maximum Operating Temp | 121.0 CELSIUS SINGLE RESPONSE DEGC |
| Surface Treatment | CADMIUM OVERALL |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL COMP 12L14 OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51843-3A | 2/2 Government specification standardization U.S. Government activity |
| 60-615 PIECE 442 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
| MS51843-23 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 273-0473-008 | 5/1 Secondary reference U.S. Government activity |
| MS51843-23 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 10544-33-7 | 5/9 Secondary reference U.S. Government activity |
| 4730001731884 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| C0N360 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MS51843-23 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| 592-442 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
| MS51843-3 | 5/9 Secondary reference U.S. Government activity |
| 1968-FS0-1/4 | C/1 Advisory reference — outside the item-of-supply concept Imperial |
| 7315-4 | C/1 Advisory reference — outside the item-of-supply concept Dana Corp Weatherhead Div |
| ES8594-02S | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
NSN 4730-00-173-1884 is a Adapter,straight,tube to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: cancelled.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-617-2064. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-173-1884: Furnished Items and Quantity: 1 PREFORMED PACKING AND 1 TUBE COUPLING NUT W/SLEEVE; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END. 19 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.
NSN 4730-00-173-1884 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.