The Flange,pipe, cataloged under National Stock Number 4730-00-406-4609, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-406-4609 |
| Primary Part Number | 8761137 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Face Seating Surface Condition | UNFINISHED |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-326,TYPE 2,CLASS2 FED SPEC 2ND TREATMENT RESPONSE |
| Tube Outside Diameter for Which Designed | 2.310 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE |
| Flange Length | 3.622 INCHES MINIMUM AND 3.632 INCHES MAXIMUM IN |
| Reducer Flange Hole Type | CONCENTRIC |
| Bolt Hole Quantity | 2 |
| Surface Treatment | CADMIUM OR ZINC |
| Center to Center Distance Between Bolt Holes Along Width | 2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.380 INCHES MINIMUM IN |
| Flange Width | 2.875 INCHES MINIMUM AND 2.885 INCHES MAXIMUM IN |
| Material | STEEL |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.380 INCHES MINIMUM IN |
| Thickness | 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM 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 |
|---|---|
| 8761137 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 47304064609 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 47304064609 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 4730-00-406-4609 is a Flange,pipe, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-406-4609 has 1 manufacturer part number on file: 8761137 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8761137: Face Seating Surface Condition: UNFINISHED; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-326,TYPE 2,CLASS2 FED SPEC 2ND TREATMENT RESPONSE; Tube Outside Diameter for Which Designed: 2.310 INCHES NOMINAL 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.