The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-277-8732, 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 Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-277-8732 |
| Primary Part Number | 145477 |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES SECOND END IN |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.688 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Seat Angle | 42.0 DEGREES FIRST END |
| Surface Treatment | CADMIUM AND ZINC OUTSIDE |
| Surface Treatment | CADMIUM AND ZINC INSIDE |
| Thread Class | 2B FIRST END |
| Thread Quantity Per Inch | 18 FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | UNS FIRST END |
| Thread Series Designator | NPT 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 |
|---|---|
| 145477 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| 671152 | 5/9 Secondary reference Spalla Inc |
NSN 4730-00-277-8732 is a Adapter,straight,pipe to Tube, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-277-8732 has 1 manufacturer part number on file: 145477 (Army Weapons Command Attn Amswe-Ree-S).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-366-6435, 6520-01-383-4830. Verify interchangeability with system specifications before substitution.
Key specifications for 145477: Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Connection Style: INVERTED FLARE (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Nominal Overall Length: 1.000 INCHES IN. 17 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.