The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-017-5123, 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 Hydrasearch Company, Llc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-017-5123 |
| Primary Part Number | 8303-4-4-SS |
| Item Name | Adapter,straight,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Hydrasearch Company, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Union Joint Location | FIRST END |
| Nominal Overall Length | 1.250 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| 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 SECOND END IN |
| Maximum Operating Temp | 225.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Class | 2A SECOND END A |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 304 NUT |
| Material | STEEL COMP 316 TAILPIECE |
| Thread Series Designator | UNF 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 |
|---|---|
| 5986 ITEM NO. 2 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| P4-4GC | Ssp Fittings Corp (USA) |
| 5075A-59-4-4 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 8303-4-4-SS PRIMARY | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 983 ITEM 9 | C/1 Advisory reference — outside the item-of-supply concept Separation & Recovery Systems Inc |
| 6243081 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| H859-4-4SS | 3/2 Design control — primary reference U.S. Government activity |
| 5986 | D/9 Drawing number reference only Howell Laboratories Inc Dba Howell Laboratories Inc |
| P4-4GC-SS | 5/9 Secondary reference Ssp Fittings Corp |
| 4730PL1242339 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4730-01-017-5123 is a Adapter,straight,tube to Boss, manufactured by Hydrasearch Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-017-5123 has 4 manufacturer part numbers on file: 5986 ITEM NO. 2 (Howell Laboratories Inc Dba Howell Laboratories Inc), P4-4GC (Ssp Fittings Corp), 5075A-59-4-4 (Howell Laboratories Inc Dba Howell Laboratories Inc), 8303-4-4-SS (Hydrasearch Company, Llc).
5 possible matches (shared part number, not a government interchangeability claim): 5360-01-159-9362, 4730-01-385-8891, 4330-01-386-3262. Verify interchangeability with system specifications before substitution.
Key specifications for 8303-4-4-SS: Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: SOCKET (TUBE) FIRST END; Union Joint Location: FIRST END. 16 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.