The Plug Assembly Expandable, cataloged under National Stock Number 4730-01-104-7645, 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 Shaw Development, Llc. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-104-7645 |
| Primary Part Number | 56720-1 |
| Item Name | Plug Assembly Expandable |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Shaw Development, Llc |
| Status | ACTIVE |
| General Characteristics Item Description | 5.813 INS MIN AND 6.625 INS MAX OD; 4.313 INS ID; TEE HANDLE 6 INS LG SCREWS UNTO 5/16 IN. 18 NC HOOKSHAPED ROD, COMPRESSING TWO PLATES - ONE ABOVE THE PLUG - ONE BELOW; EXPANDING AND CAUSING CLOSURE OF PIPE WHICH WILL WITHSTAND 2 PSI AIR PRESSURES; UPPER PLATE 6.875 INS NOM OD; LOWER PLATE 5.750 INS NOM, HOOK THROAT OPENING 1.375 INS NOM, 10.500 INS NOM O/A LG IN |
| Material | RUBBER SYNTHETIC AND STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 56720-1 PRIMARY | Shaw Development, Llc (USA) |
| 41UT-1602-7 | United States Coast Guard Yard (USA) |
NSN 4730-01-104-7645 is a Plug Assembly Expandable, manufactured by Shaw Development, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-104-7645 has 2 manufacturer part numbers on file: 56720-1 (Shaw Development, Llc), 41UT-1602-7 (United States Coast Guard Yard).
Key specifications for 56720-1: General Characteristics Item Description: 5.813 INS MIN AND 6.625 INS MAX OD; 4.313 INS ID; TEE HANDLE 6 INS LG SCREWS UNTO 5/16 IN. 18 NC HOOKSHAPED ROD, COMPRESSING TWO PLATES - ONE ABOVE THE PLUG - ONE BELOW; EXPANDING AND CAUSING CLOSURE OF PIPE WHICH WILL WITHSTAND 2 PSI AIR PRESSURES; UPPER PLATE 6.875 INS NOM OD; LOWER PLATE 5.750 INS NOM, HOOK THROAT OPENING 1.375 INS NOM, 10.500 INS NOM O/A LG IN; End Item Identification: ONBOARD 41 FT UTB CLASS COAST GUARD CUTTERS FT; Material: RUBBER SYNTHETIC AND STEEL CORROSION RESISTING. 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.
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.