The Spacer,flexible,pipeline, cataloged under National Stock Number 4730-00-936-8178, 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 Bishop Enterprises, Inc.. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-936-8178 |
| Primary Part Number | 77643-55X13PC5 |
| Item Name | Spacer,flexible,pipeline |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Bishop Enterprises, Inc. |
| Status | ACTIVE |
| Flange Thickness | 0.190 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Style Designator | ROUND |
| Material Document and Classification | MIL-R-6855, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 17.750 INCHES MINIMUM AND 17.930 INCHES MAXIMUM IN |
| Body Length | 2.125 INCHES NOMINAL IN |
| Inside Diameter | 14.500 INCHES NOMINAL IN |
| Flange Height | 2.125 INCHES MINIMUM AND 2.734 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Fabrication Method | MOLDED |
| Thickness | 0.150 INCHES NOMINAL IN |
| 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 |
|---|---|
| 77643-55X13PC5 | Bishop Enterprises, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 77643-55X13PC5 | 3/2 Design control — primary reference U.S. Government activity |
| 725-8669PC5 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-00-936-8178 is a Spacer,flexible,pipeline, manufactured by Bishop Enterprises, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-936-8178 has 1 manufacturer part number on file: 77643-55X13PC5 (Bishop Enterprises, Inc.).
Key specifications for 77643-55X13PC5: Flange Thickness: 0.190 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN; Style Designator: ROUND; Material Document and Classification: MIL-R-6855, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE; Outside Diameter: 17.750 INCHES MINIMUM AND 17.930 INCHES MAXIMUM IN. 10 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.