The Tailpiece,union, cataloged under National Stock Number 4730-00-900-9481, 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 Ashcroft Inc Dba Heise. Government technical data includes 2 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through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-900-9481 |
| Primary Part Number | 5-3088PC6 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 5-3088PC6 | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 820-2179134-3 | 5/2 Secondary reference U.S. Government activity |
| 820-2179134-3 | 5/1 Secondary reference Naval Sea Systems Command |
| 4809-F PC. 40 | 5/1 Secondary reference Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
| 3563-1/4 | 5/1 Secondary reference Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
| 820-2178681-1 | 5/9 Secondary reference U.S. Government activity |
| 820-2179134PC3 | 5/9 Secondary reference U.S. Government activity |
| 820-2178664-16 | 5/2 Secondary reference U.S. Government activity |
| 3563-1/4IN | 5/9 Secondary reference U.S. Government activity |
| 820-2179130-109 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 3563 1-4IN | 5/1 Secondary reference The Walworth Company |
| 820-2178681-1 | 5/9 Secondary reference U.S. Government activity |
| 820-2178741PC51 | 5/1 Secondary reference Naval Sea Systems Command |
| 820-2178681PC1 | 5/1 Secondary reference U.S. Government activity |
NSN 4730-00-900-9481 is a Tailpiece,union, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-900-9481 has 1 manufacturer part number on file: 5-3088PC6 (Ashcroft Inc Dba Heise).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-118-2372. Verify interchangeability with system specifications before substitution.
Key specifications for 5-3088PC6: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 2 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 4730-00-900-9481 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.