The Thermometer,self-Indicating,bime, cataloged under National Stock Number 6685-01-228-5332, 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 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-228-5332 |
| Primary Part Number | E318A4R3 |
| Item Name | Thermometer,self-Indicating,bime |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 THREADED STEM |
| Stem Length | 5.094 INCHES MINIMUM AND 5.156 INCHES MAXIMUM IN |
| Relationship to Similar Equipment | SIMILAR TO NSN 6685-00-042-3218 EXCEPT TEMP INDICATOR |
| Design Type | MINIMUM AND MAXIMUM |
| Scale Calibration | 2.0 DEG F BETWEEN GRADUATIONS DEGF |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Accuracy Rating | PORM 2.2 PCT FULL RANGE |
| Dial Diameter | 3.000 INCHES NOMINAL IN |
| Reference Data and Literature | MIL-I-17244 DESIGN ITM |
| Style Designator | STRAIGHT FORM, HORIZONTAL DIAL |
| Mounting Facility Screw Thread Series Designator | UNS |
| Material Document and Classification | ASTM A286 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Features Provided | GASKET AND PROTECTIVE GLASS/PLASTIC AND RESET BUTTON |
| Mounting Thread Quantity | 28 PER INCH |
| Specification/standard Data | 53711-5868776 MANUFACTURERS SPECIFICATION CONTROL |
| Immersion Length | 4.000 INCHES MAXIMUM IN |
| Scale Type | CONCENTRIC DIAL |
| Mounting Facility Nominal Screw Thread Diameter | 0.750 INCHES IN |
| Scale Measurement Range | -40.000 TO 180.000 DEG FAHRENHEIT |
| Functional Description | TWO POINTER TEMP INDICATOR W/ MAX/MIN TYPE RESET U/O GMLS MK13 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 321 OR STEEL COMP 347 OVERALL |
| Scale Adjustment Variation | ZERO RESET |
| Type/model Designation | ITM318A4 |
| 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 |
|---|---|
| 5868776 | Bae Systems Land & Armaments L.p. (USA) |
| E318A4R3 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 5868776 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| E318A4R3 | 5/9 Secondary reference Weksler Glass Thermometer Corp |
| 6685PL0923021 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 6685-01-228-5332 is a Thermometer,self-Indicating,bime, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-228-5332 has 2 manufacturer part numbers on file: 5868776 (Bae Systems Land & Armaments L.p.), E318A4R3 (Ashcroft Inc Dba Heise).
Key specifications for E318A4R3: Mounting Facility Type and Quantity: 1 THREADED STEM; Stem Length: 5.094 INCHES MINIMUM AND 5.156 INCHES MAXIMUM IN; Relationship to Similar Equipment: SIMILAR TO NSN 6685-00-042-3218 EXCEPT TEMP INDICATOR; Design Type: MINIMUM AND MAXIMUM. 23 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.