The Resistor,thermal, cataloged under National Stock Number 5905-00-804-2768, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Piezothermx Corporation. Government technical data includes 30 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5905-00-804-2768 |
| Primary Part Number | 31TD2 |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Piezothermx Corporation |
| Status | ACTIVE |
| Temp Points for Resistance Readings at Zero Power | 70.0 CELSIUS SEVENTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -40.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -55.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 100.0 CELSIUS EIGHTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 125.0 CELSIUS NINTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 150.0 CELSIUS TENTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 0.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 30.0 CELSIUS SIXTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -30.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 10.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.013 INCHES NOMINAL IN |
| Resistance Tolerance at a Specified Temp in Percent | -14.2 TO 14.2 THIRD RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -18.9 TO 18.9 TENTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -12.0 TO 12.0 FOURTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -10.4 TO 10.4 FIFTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -10.4 TO 10.4 SIXTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -13.5 TO 13.5 SEVENTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -14.8 TO 14.8 SECOND RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -15.9 TO 15.9 EIGHTH RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -16.0 TO 16.0 FIRST RESISTANCE-TEMPERATURE POINT |
| Resistance Tolerance at a Specified Temp in Percent | -17.5 TO 17.5 NINTH RESISTANCE-TEMPERATURE POINT |
| Terminal Length | 1.250 INCHES MINIMUM IN |
| Zero Power Resistance at Specified Temp | 100.0 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 1.25 KILOHMS FIFTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 17.92 KILOHMS THIRD RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 174.7 OHMS SEVENTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 18.43 OHMS TENTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 3.274 KILOHMS FOURTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 33.89 OHMS NINTH RESISTANCE-TEMPERATURE POINT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 31TD2 PRIMARY | Piezothermx Corporation (USA) |
| 8503775-2 | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA) |
| Reference | Meaning |
|---|---|
| 31TD2 | C/1 Advisory reference — outside the item-of-supply concept Saft America Inc. Dba Tadiran Batteries Div Aviation Division |
| 31TD2 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 841008 | 5/9 Secondary reference L3 Aviation Products, Inc. Dba L3 Technologies |
NSN 5905-00-804-2768 is a Resistor,thermal, manufactured by Piezothermx Corporation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-804-2768 has 2 manufacturer part numbers on file: 31TD2 (Piezothermx Corporation), 8503775-2 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).
Key specifications for 31TD2: Temp Points for Resistance Readings at Zero Power: 70.0 CELSIUS SEVENTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: -40.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: -55.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 100.0 CELSIUS EIGHTH RESISTANCE-TEMPERATURE POINT DEGC. 30 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.