The Cock,drain, cataloged under National Stock Number 4820-01-437-8765, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Essex Brass Corporation. Government technical data includes 12 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-437-8765 |
| Primary Part Number | EC-53 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Essex Brass Corporation |
| Status | ACTIVE |
| Material Document and Classification | ASTM B-21 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | MANUAL |
| Thread Series Designator | NPT ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Furnished Items and Quantity | 1 HANDLE |
| Style Designator | STRAIGHT THRU |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Connection Style | PLAIN, OPTIONAL END (PIPE) SECOND END |
| Material | COPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-437-8765 is a Cock,drain, manufactured by Essex Brass Corporation, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-437-8765 has 2 cross-referenced part numbers: EC-53 (Essex Brass Corporation), DC53 (Essex Brass Corporation).
There are 3 known substitutes for 4820-01-437-8765: 6625-00-498-3375, 4820-01-243-5841, 4820-01-439-3853. Verify interchangeability with system specifications before substitution.
Key specifications for EC-53: Material Document and Classification: ASTM B-21 ASSN STD SINGLE MATERIAL RESPONSE BODY; Thread Direction: RIGHT-HAND ALL ENDS; Valve Operation Method: MANUAL; Thread Series Designator: NPT ALL ENDS. 15 total characteristics are documented in the Federal Logistics Information System.