The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-481-2073, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Unimasco Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-481-2073 |
| Primary Part Number | H728-4401-RRT-220 |
| Item Name | Thermometer,indicating,capillary |
| FSC / FSG | 6685 / 66 — No Item Name Available |
| Manufacturer | Unimasco Inc |
| Status | ACTIVE |
| Bulb Style | PLAIN BULB W/BENDABLE EXTENSION |
| Scale Type | DIAL |
| Bulb Type | FLEXIBLE CAPILLARY |
| Bulb Overall Length | 181.500 INCHES NOMINAL IN |
| Style Designator | BULB W/O SOCKET |
| Dial Diameter | 3.500 INCHES NOMINAL IN |
| Bulb Connection Type | UNION |
| Extension Neck Length | 180.000 INCHES NOMINAL IN |
| Case Diameter | 4.000 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bulb Quantity | 1 |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE |
| Bulb Tip Length | 1.500 INCHES NOMINAL IN |
| Actuating Medium | LIQUID |
| Active Portion Diameter | 0.375 INCHES NOMINAL IN |
| Active Portion Length | 1.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H728-4401-RRT-220 | Unimasco Inc (USA) |
| 531-7015135 | Naval Sea Systems Command (USA) |
| MIL-T-19646 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| M19646C124D315 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 31GSY00UF15Y | Ashcroft Inc Dba Heise (USA) |
| H728-4401 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 531-7015135-RRT-220 | Naval Sea Systems Command (USA) |
| M27-400 | Ashcroft Inc Dba Heise (USA) |
NSN 6685-01-481-2073 is a Thermometer,indicating,capillary, manufactured by Unimasco Inc, classified under FSC 6685 (No Item Name Available). Status: active.
NSN 6685-01-481-2073 has 8 cross-referenced part numbers: H728-4401-RRT-220 (Unimasco Inc), 531-7015135 (Naval Sea Systems Command), MIL-T-19646 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M19646C124D315 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 31GSY00UF15Y (Ashcroft Inc Dba Heise) and 3 more.
There are 12 known substitutes for 6685-01-481-2073: 6685-00-007-9593, 6685-00-147-5841, 6685-00-428-8789 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for H728-4401-RRT-220: Bulb Style: PLAIN BULB W/BENDABLE EXTENSION; Scale Type: DIAL; Bulb Type: FLEXIBLE CAPILLARY; Bulb Overall Length: 181.500 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.