The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-784-5690, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is H-B Instrument Co. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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 | 6685-00-784-5690 |
| Primary Part Number | 23810-1 |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — No Item Name Available |
| Manufacturer | H-B Instrument Co |
| Status | ACTIVE |
| Internal Thread Size | 1/2 IN.1/2 IN. IN |
| Armor Encased Tip Type | MERCURY FILLEDMERCURY FILLED |
| Scale Type | ETCHED STEMETCHED STEM |
| Actuating Medium | MERCURYMERCURY |
| Bulb Tip Outside Diameter | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN |
| Tip Length | 1.813 INCHES NOMINAL1.813 INCHES NOMINAL IN |
| Scale Inscription/background Color | BLACK MARKING ON YELLOW BACKGROUNDBLACK MARKING ON YELLOW BACKGROUND |
| Socket Overall Length | 3.063 INCHES NOMINAL3.063 INCHES NOMINAL IN |
| Material | BRASS METER CASE |
| Scale Smallest Increment | 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT |
| External Thread Size | 1/4 IN. SPT1/4 IN. SPT IN |
| Separable Socket Style | PLAIN SOCKETPLAIN SOCKET |
| Design Type | FLUCTUATINGFLUCTUATING |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 23810-1 PRIMARY | H-B Instrument Co (USA) |
NSN 6685-00-784-5690 is a Thermometer,self-Indicating, manufactured by H-B Instrument Co, classified under FSC 6685 (No Item Name Available). Status: active.
NSN 6685-00-784-5690 has 1 cross-referenced part number: 23810-1 (H-B Instrument Co).
There are 3 known substitutes for 6685-00-784-5690: 5905-00-173-7089, 4320-00-821-7054, 5342-01-184-6691. Verify interchangeability with system specifications before substitution.
Key specifications for 23810-1: Internal Thread Size: 1/2 IN.1/2 IN. IN; Armor Encased Tip Type: MERCURY FILLEDMERCURY FILLED; Overall Length: 9.063 INCHES NOMINAL9.063 INCHES NOMINAL IN; Scale Type: ETCHED STEMETCHED STEM. 14 total characteristics are documented in the Federal Logistics Information System.