The Flange,pipe, cataloged under National Stock Number 4730-00-289-3603, 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 Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-289-3603 |
| Primary Part Number | 81576PC11078A |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Flange End Radius | 0.406 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.250 INCHES IN |
| Flange Section Style | PLAIN FACE |
| Style Designator | OVAL, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.406 INCHES NOMINAL IN |
| Flange Length | 3.500 INCHES NOMINAL IN |
| Nominal Thread Size | 1.250 INCHES IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 2.688 INCHES NOMINAL IN |
| Screw Thread Series Designator | NPT |
| Flange Width | 2.188 INCHES NOMINAL IN |
| Material | IRON |
| Thickness | 0.688 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 |
|---|---|
| 81576PC11078A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 11078-A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 81574PC11078A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 75035PC11078A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 75029PC11078A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 81576PC11078A | 5/9 Secondary reference Hercules Engine Co Inc |
| S4105-422209PC141 | 3/2 Design control — primary reference U.S. Government activity |
| 75035PC11078A | 5/9 Secondary reference Hercules Engine Co Inc |
| 11078-A | 5/9 Secondary reference Hercules Engine Co Inc |
| 75029PC11078A | 5/9 Secondary reference Hercules Engine Co Inc |
| 85111S41-1PC141 | 3/2 Design control — primary reference U.S. Government activity |
| 81574PC11078A | 5/9 Secondary reference Hercules Engine Co Inc |
| 85111S41-40PC11078A | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-289-3603 is a Flange,pipe, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-289-3603 has 5 manufacturer part numbers on file: 81576PC11078A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 11078-A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 81574PC11078A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 75035PC11078A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 75029PC11078A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 81576PC11078A: Flange End Radius: 0.406 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.250 INCHES IN; Flange Section Style: PLAIN FACE. 14 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.