The Union,pipe, cataloged under National Stock Number 4730-01-210-8890, 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 Flagg Stanley G & Co Inc Dba Flagg Brass. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-210-8890 |
| Primary Part Number | 1741-040 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Flagg Stanley G & Co Inc Dba Flagg Brass |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTMA-153 ASSN STD SINGLE TREATMENT RESPONSE UNION |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Coupling Flange Shape | HEXAGON |
| Nominal Overall Length | 1.688 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | SCREWED |
| Material Document and Classification | ASTMA-197 ASSN STD SINGLE MATERIAL RESPONSE UNION |
| Seat Type | GROUND-JOINT |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Surface Treatment | ZINC UNION |
| Material | IRON CAST UNION |
| Thread Series Designator | NPS ALL ENDS |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| M534A7-9 | Cam Fabricated Systems Inc (USA) |
| 1741-040 PRIMARY | Flagg Stanley G & Co Inc Dba Flagg Brass (USA) |
| Reference | Meaning |
|---|---|
| B16.39-1/4IN-NPS | 3/1 Design control — primary reference U.S. Government activity |
| 5-11-681 UNION 1/4IN-IPS | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-01-210-8890 is a Union,pipe, manufactured by Flagg Stanley G & Co Inc Dba Flagg Brass, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-210-8890 has 2 manufacturer part numbers on file: M534A7-9 (Cam Fabricated Systems Inc), 1741-040 (Flagg Stanley G & Co Inc Dba Flagg Brass).
Key specifications for 1741-040: Surface Treatment Document and Classification: ASTMA-153 ASSN STD SINGLE TREATMENT RESPONSE UNION; Connection Style: PLAIN (PIPE) ALL ENDS; Coupling Flange Shape: HEXAGON; Nominal Overall Length: 1.688 INCHES IN. 13 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.