The Elbow,pipe to Boss, cataloged under National Stock Number 4730-01-191-5980, 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 Guill Tool & Engineering Co Inc Div Guill Defense. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-191-5980 |
| Primary Part Number | 2621-021-04 ITEM 21 |
| Item Name | Elbow,pipe to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Guill Tool & Engineering Co Inc Div Guill Defense |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Material | STEEL COMP 304 OVERALL |
| 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 |
|---|---|
| 2621-021-04 ITEM 21 PRIMARY | Guill Tool & Engineering Co Inc Div Guill Defense (USA) |
| Reference | Meaning |
|---|---|
| 2621-021-04 ITEM 21 | 5/2 Secondary reference U.S. Government activity |
| 14-97-0273 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-191-5980 is a Elbow,pipe to Boss, manufactured by Guill Tool & Engineering Co Inc Div Guill Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-191-5980 has 1 manufacturer part number on file: 2621-021-04 ITEM 21 (Guill Tool & Engineering Co Inc Div Guill Defense).
Key specifications for 2621-021-04 ITEM 21: Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: DOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END; Connection Type: UNTHREADED INTERNAL PIPE FIRST END. 6 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.