The Tailpiece,valve, cataloged under National Stock Number 4820-01-128-4649, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-128-4649 |
| Item Name | Tailpiece,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Type | FLANGE, ROUND W/HOLES |
| Flange Diameter | 16.494 INCHES AND 13.125 INCHES IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 704-4674165 ITEM 7 | 5/2 Secondary reference U.S. Government activity |
| 87553-5007 | D/9 Drawing number reference only U.S. Government activity |
| 704-4674165 ITEM 7 | 5/2 Secondary reference U.S. Government activity |
| 87553-5007 ITEM 7 | 3/2 Design control — primary reference U.S. Government activity |
| 704-4674165 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-128-4649 is a Tailpiece,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-128-4649: Connection Type: FLANGE, ROUND W/HOLES; Flange Diameter: 16.494 INCHES AND 13.125 INCHES IN; Special Features: NICKEL COPPER ALLOY MIL-C-15726 COMP 70-30 COND H;FIRST END 1.625 IN. DEEP WITH 12 HOLES EQUALLY SPACED ON A 15.250 IN. DIA BOLT CIRCLE 1.19 IN. DEEP 90 DEG COUNTERSINK TO 0.660 IN. DIA 0.625-11 UNC-2B 0.75(MIN) FULL THD DEPTH; 12 HOLES EQUALLY SPACED ON OPPOSITE SIDE ON A 15.250 IN. DIA BOLT CIRCLE 1.190 IN. DEEP 90 DEG COUNTERSINK TO 0.660 IN. DIA 0.625-11 UNC-2B 0.75 (MIN) FULL THD DEPTH; SECOND END ID 7.945 IN.;1.125 IN. DEEP WITH 16 HOLES EQUALLY SPACED ON A 11.650 IN. DIA BOLT CIRCLE 1.190 IN. DEEP 90 DEG COUNTERSINK TO 0.660 IN. DIA 0.625-11 UNC-2B 0.87(MIN) FULLTHD DEPTH IN; Material: COPPER ALLOY. 3 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.