The Thermostat,flow Control, cataloged under National Stock Number 6685-00-527-6545, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-527-6545 |
| Primary Part Number | 203921B |
| Item Name | Thermostat,flow Control |
| FSC / FSG | 6685 / 66 — No Item Name Available |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Operating Temp Rating | 106.0 FAHRENHEIT NOMINAL DEGF |
| Flow Control Device | CHOKE |
| Inside Mounting Surface to Valve Seat Distance | 2.120 INCHES IN |
| Thread Size and Series/type Designator | 1-1/2-18 UNEF |
| Usage Design | COOL WATER |
| Spring Operated Pressure Relief | PROVIDED |
| Mounting Method | THREADED |
| Accessory Components and Quantity | GASKET,MTG |
| Closing Pressure Setting | 39.0 POUNDS PER SQUARE INCH NOMINAL LBS |
| Opening Temp Rating | 99.0 FAHRENHEIT NOMINAL DEGF |
| Distance Across Flats | 1.750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Opening Pressure Setting | ERR-060 |
| Valve Travel Distance | 0.197 INCHES NOMINAL IN |
| Thermostat Type | BELLOWS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 203921B | Hercules Engine Co Inc (USA) |
| 208135 | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| XTA25000-19 | Scovill Inc (USA) |
| 203921B PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 208135 | Hercules Engine Co Inc (USA) |
NSN 6685-00-527-6545 is a Thermostat,flow Control, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 6685 (No Item Name Available). Status: active.
NSN 6685-00-527-6545 has 5 cross-referenced part numbers: 203921B (Hercules Engine Co Inc), 208135 (Brinkley Technology Group Llc Dba Hercules Manufacturing), XTA25000-19 (Scovill Inc), 203921B (Brinkley Technology Group Llc Dba Hercules Manufacturing), 208135 (Hercules Engine Co Inc).
There are 2 known substitutes for 6685-00-527-6545: 4730-00-530-7296, 2815-01-297-9113. Verify interchangeability with system specifications before substitution.
Key specifications for 203921B: Operating Temp Rating: 106.0 FAHRENHEIT NOMINAL DEGF; Flow Control Device: CHOKE; Inside Mounting Surface to Valve Seat Distance: 2.120 INCHES IN; Thread Size and Series/type Designator: 1-1/2-18 UNEF. 16 total characteristics are documented in the Federal Logistics Information System.