The Screw Adjusting,valve, cataloged under National Stock Number 4820-01-105-9656, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-105-9656 |
| Item Name | Screw Adjusting,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | CORROSION RESISTING STEEL; EXTERNALLY THD 0.625-18 UNF; WRENCHING FLATS ON ONE END,0.375 IN. OTHER END 0.750 IN.DIA; 0.625 IN.HEAD LG; HEAD IS CONCAVED FOR SEATING PURPOSE,3.840 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 |
| Reference | Meaning |
|---|---|
| 3311582 ITEM 10 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 3311889 | 3/9 Design control — primary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 4820-01-105-9656 is a Screw Adjusting,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-105-9656: General Characteristics Item Description: CORROSION RESISTING STEEL; EXTERNALLY THD 0.625-18 UNF; WRENCHING FLATS ON ONE END,0.375 IN. OTHER END 0.750 IN.DIA; 0.625 IN.HEAD LG; HEAD IS CONCAVED FOR SEATING PURPOSE,3.840 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.