The Ring,adjusting Upper, cataloged under National Stock Number 4820-01-040-0183, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-040-0183 |
| Primary Part Number | 5VKJ72PC8 |
| Item Name | Ring,adjusting Upper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| General Characteristics Item Description | CRES O/A,EXTERNALLY AND INTERNALLY THREADED W/WRENCHING FEATURES ON OUTER SURFACE,3.375 IN. O/A DIA,OUTER THD 2.750-16 UN THD SIZE,0.865 IN. LG,INNER THD 2.500-16 UN THD SIZE 0.590 IN LG,2.170 IN. TO 1.315 IN. O/A LG 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 |
|---|---|
| 5VKJ72PC8 | Ashcroft Inc Dba Heise (USA) |
| 5VNM72PC8 | Ashcroft Inc Dba Heise (USA) |
| VEE804A | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| VEE804A | 3/9 Design control — primary reference Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse |
NSN 4820-01-040-0183 is a Ring,adjusting Upper, manufactured by Ashcroft Inc Dba Heise, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-040-0183 has 3 manufacturer part numbers on file: 5VKJ72PC8 (Ashcroft Inc Dba Heise), 5VNM72PC8 (Ashcroft Inc Dba Heise), VEE804A (Ashcroft Inc Dba Heise).
Key specifications for 5VKJ72PC8: General Characteristics Item Description: CRES O/A,EXTERNALLY AND INTERNALLY THREADED W/WRENCHING FEATURES ON OUTER SURFACE,3.375 IN. O/A DIA,OUTER THD 2.750-16 UN THD SIZE,0.865 IN. LG,INNER THD 2.500-16 UN THD SIZE 0.590 IN LG,2.170 IN. TO 1.315 IN. O/A LG IN. 1 specification is 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.