The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-244-0802, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-244-0802 |
| Primary Part Number | N15-A-7-15-0 |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Socket Overall Length | 4.375 INCHES NOMINAL4.375 INCHES NOMINAL IN |
| Design Type | FLUCTUATINGFLUCTUATING |
| Separable Socket Style | PLAIN SOCKETPLAIN SOCKET |
| Scale Inscription/background Color | BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND |
| Scale Smallest Increment | 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT |
| Scale Accuracy Rating | 2 DEG2 DEG |
| Actuating Medium | MERCURYMERCURY |
| Features Provided | LENS MAGNIFYING FRONT AND LENS MAGNIFYING FRONT AND EXPANSION CHAMBEREXPANSION CHAMBER |
| Scale Type | METALMETAL |
| Bulb Tip Outside Diameter | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| Scale Measurement Range | +0.000 TO 160.000 DEG FAHRENHEIT+0.000 TO 160.000 DEG FAHRENHEIT |
| External Thread Size | 3/4 IN. NPT MALE3/4 IN. NPT MALE IN |
| Surface Treatment | ENAMEL METER CASE |
| Internal Thread Size | 1-1/4 IN. - 18 NEF - 2 FEMALE1-1/4 IN. - 18 NEF - 2 FEMALE IN |
| Tip Length | 2.563 INCHES NOMINAL2.563 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| N15-A-7-15-0 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| GGT321 | 4/1 Identification reference U.S. Government activity |
NSN 6685-00-244-0802 is a Thermometer,self-Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-244-0802 has 1 manufacturer part number on file: N15-A-7-15-0 (Ashcroft Inc Dba Heise).
Key specifications for N15-A-7-15-0: Socket Overall Length: 4.375 INCHES NOMINAL4.375 INCHES NOMINAL IN; Design Type: FLUCTUATINGFLUCTUATING; Separable Socket Style: PLAIN SOCKETPLAIN SOCKET; Scale Inscription/background Color: BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.