The Valve,check, cataloged under National Stock Number 4820-00-274-5107, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-274-5107 |
| Primary Part Number | 7974893 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | CANCELLED |
| Thread Direction | RIGHT-HAND FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Thread Quantity Per Inch | 20 FIRST END |
| Thread Quantity Per Inch | 27 SECOND END |
| Thread Series Designator | UNF FIRST END |
| Seat Angle | 45.0 DEGREES FIRST END |
| Material | COPPER ALLOY OVERALL |
| Flow Control Device | BALL |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Nominal Thread Size | 0.125 INCHES SECOND END IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Nominal Pipe Size Accommodated | 0.125 INCHES SECOND END IN |
| Valve Operation Method | AUTOMATIC |
| Connection Style | FLARED (TUBE) FIRST END |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Thread Series Designator | NPT SECOND END |
| Style Designator | STRAIGHT THRU |
| Thread Class | 2A FIRST END A |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 43F1-4X1-8 | Imperial (USA) |
| 43X4 | Dana Corp Weatherhead Div (USA) |
| 7974893 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 43F | Imperial (USA) |
| UXA18767 | Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA) |
| 12993 | Clayton Manufacturing Company (USA) |
| 27978 | Seagrave Corp the (USA) |
| WA32279 | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA) |
| 359617C1 | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| D14092-27 | Met-Pro Corporation (USA) |
| 3035-28 | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
| B43 | Stant Corp Edelmann Div (USA) |
NSN 4820-00-274-5107 is a Valve,check, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-274-5107 has 12 cross-referenced part numbers: 43F1-4X1-8 (Imperial), 43X4 (Dana Corp Weatherhead Div), 7974893 (U S Army Tank Automotive Command Amsta-Im-Mm), 43F (Imperial), UXA18767 (Siemens Water Technologies Corp. Div Wallace & Tiernan Products) and 7 more.
There are 12 known substitutes for 4820-00-274-5107: 3030-00-299-1230, 4820-00-402-9481, 4310-00-431-1659 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 7974893: Thread Direction: RIGHT-HAND FIRST END; Mounting Position: HORIZONTAL OR VERTICAL; Thread Quantity Per Inch: 20 FIRST END; Thread Quantity Per Inch: 27 SECOND END. 22 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-274-5107 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.