The Lock Assembly,ball Valve, cataloged under National Stock Number 4820-01-230-9022, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-230-9022 |
| Primary Part Number | 256202 ASSY A-C PC 31THRU37 |
| Item Name | Lock Assembly,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| General Characteristics Item Description | LOCKED SHUT IDENT TAG 1,PIN 1,BRAIDED WIRE 1,STAKON BARREL 1,COUPLING 1,SCREW 1,WASHER 1 |
| Special Test Features | COMPRISED OF TAS, IDENTIFICATION (LOCKED SHUT) P/N QQ-N-281, NICKEL COPPER ALLOY, CLASS A COLD ROLLED; PIN, BALL LOCK PER MIL-T-8735, STEEL CONDITION HT-150, NOTE 18;WIRE, BRAIDED, COPPER ALLOY;BARREL, STAKON, COPPER ALLOY;COUPLING, COPPER ALLOY PER QQ-N-281, CLASS A COLD ROLLED; SCREW, RH 4-40, CORROSION RESISTANT STEEL PER QQ-S-783, CLASS 304 CONDITION A;WASHER, LOCK , CORROSION RESISTANT STEEL PER FF-T-84, CLASS C, STYLE 2 |
| Supplementary Features | NEXT HIGHER ASSEMBLY: VALVES-TOP LOADED BALL STOP STRAIGHT 1/4 AND 1/2 IPS-NITROGEN SERVICE 3000 AND 5000 PSI MAX; ASSEMBLIES AND DETAILS |
| 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 |
|---|---|
| 256202 ASSY A-C PC 31THRU37 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 256202 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-230-9022 is a Lock Assembly,ball Valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-230-9022 has 1 manufacturer part number on file: 256202 ASSY A-C PC 31THRU37 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 256202 ASSY A-C PC 31THRU37: General Characteristics Item Description: LOCKED SHUT IDENT TAG 1,PIN 1,BRAIDED WIRE 1,STAKON BARREL 1,COUPLING 1,SCREW 1,WASHER 1; Special Test Features: COMPRISED OF TAS, IDENTIFICATION (LOCKED SHUT) P/N QQ-N-281, NICKEL COPPER ALLOY, CLASS A COLD ROLLED; PIN, BALL LOCK PER MIL-T-8735, STEEL CONDITION HT-150, NOTE 18;WIRE, BRAIDED, COPPER ALLOY;BARREL, STAKON, COPPER ALLOY;COUPLING, COPPER ALLOY PER QQ-N-281, CLASS A COLD ROLLED; SCREW, RH 4-40, CORROSION RESISTANT STEEL PER QQ-S-783, CLASS 304 CONDITION A;WASHER, LOCK , CORROSION RESISTANT STEEL PER FF-T-84, CLASS C, STYLE 2; Supplementary Features: NEXT HIGHER ASSEMBLY: VALVES-TOP LOADED BALL STOP STRAIGHT 1/4 AND 1/2 IPS-NITROGEN SERVICE 3000 AND 5000 PSI MAX; ASSEMBLIES AND DETAILS; Special Features: ASSEMBLIES WITH THIS NSN DO NOT INCLUDE A LOCKING DEVICE; WHEN A LOCKED VALVE IS REQUIRED APPLICABLE LOCKING DEVICE ASSEMBLY IN ADDITION TO REQUIRED VALVE ASSEMBLY. 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.