The Ball,check, cataloged under National Stock Number 4820-01-416-1644, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Droitcour Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-416-1644 |
| Primary Part Number | 1771 |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Droitcour Co |
| Status | ACTIVE |
| Spherical Diameter | 0.125 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-416-1644 is a Ball,check, manufactured by Droitcour Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-416-1644 has 2 cross-referenced part numbers: 1771 (Droitcour Co), 2253-1-16 (Droitcour Co).
There are 10 known substitutes for 4820-01-416-1644: 5905-00-045-9389, 4410-00-192-0875, 4730-00-273-9497 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1771: Spherical Diameter: 0.125 INCHES NOMINAL IN; Special Features: FOR SAFETY RELIEF VALVE; 0.125 IN. DIA BALL IN; Material: STEEL CORROSION RESISTING; End Item Identification: SEAWOLF CLASS SSN. 4 total characteristics are documented in the Federal Logistics Information System.