The Tee,tube, cataloged under National Stock Number 4730-01-236-6255, 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 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-236-6255 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Criticality Code Justification | ZZZW |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Material Document and Classification | MS51811-15SS MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Leg Length | 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM ALL ENDS IN |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 558-6340921ITEM13 | 5/1 Secondary reference Naval Sea Systems Command |
| MS51811-15SS | 4/1 Identification reference U.S. Government activity |
| MS51811 | 5/1 Secondary reference U.S. Government activity |
NSN 4730-01-236-6255 is a Tee,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-310-4674, 4730-01-516-2885, 4730-01-522-9303. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-236-6255: Connection Style: FLARELESS (TUBE) ALL ENDS; Criticality Code Justification: ZZZW; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Material Document and Classification: MS51811-15SS MIL STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.