The Plug,pipe, cataloged under National Stock Number 4730-00-172-8729, 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 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-172-8729 |
| Primary Part Number | M2051BC |
| Item Name | Plug,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Head Type | SOLID |
| Nominal Pipe Size for Which Designed | 0.125 INCHES IN |
| Connection Style | PLAIN |
| Drive End Style | RECESSED HEXAGON |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.125 INCHES EXTERNAL IN |
| Body Type | SOLID |
| Thread Series Designator | NPTF EXTERNAL |
| 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 |
|---|---|
| M2051BC PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| 634612C1 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 634612C1 | 5/9 Secondary reference Komatsu American Intl Co |
| 634612C1 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-172-8729 is a Plug,pipe, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-172-8729 has 2 manufacturer part numbers on file: M2051BC (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 634612C1 (Komatsu America Corp.).
Key specifications for M2051BC: Head Type: SOLID; Nominal Pipe Size for Which Designed: 0.125 INCHES IN; Connection Style: PLAIN; Drive End Style: RECESSED HEXAGON. 8 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.