The Resistor,thermal, cataloged under National Stock Number 5905-00-900-6989, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell Div Sensing & Control. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-900-6989 |
| Primary Part Number | KA31J1 |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Honeywell International Inc. Dba Honeywell Div Sensing & Control |
| Status | ACTIVE |
| Temp Points for Resistance Readings at Zero Power | 150.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 100.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -60.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 50.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.020 INCHES NOMINAL IN |
| Resistance Tolerance at a Specified Temp in Percent | -10.0 TO 10.0 ALL RESISTANCE-TEMPERATURE POINTS |
| Terminal Length | 1.250 INCHES NOMINAL IN |
| Zero Power Resistance at Specified Temp | 145.2 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 18.4 OHMS FIFTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 3.3 KILOHMS SECOND RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 359.5 OHMS THIRD RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 65.7 OHMS FOURTH RESISTANCE-TEMPERATURE POINT |
| Body Outside Diameter | 0.200 INCHES NOMINAL IN |
| Body Width | 0.038 INCHES NOMINAL IN |
| Style Designator | DISK |
| Power Dissipation Constant in Milliwatts Per Deg Celsius | 6.0 |
| Zero Power Resistance | 1.000 KILOHMS |
| Thermal Time Constant in Seconds | 20.0 |
| Zero Power Resistance Tolerance in Percent at Reference Temp | -10.0 TO 10.0 |
| Maximum Operating Temp | 150.0 CELSIUS DEGC |
| Zero Power Temp Coefficient of Resistance in Percent Per Deg Celsius | -4.40 |
| Reliability Indicator | NOT ESTABLISHED |
| Terminal Type and Quantity | 2 WIRE LEAD |
| 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 |
|---|---|
| KA31J1 PRIMARY | Honeywell International Inc. Dba Honeywell Div Sensing & Control (USA) |
| 2553792-4 PRIMARY | Honeywell International Inc. Dba Honeywell International (USA) |
| 2553792-4 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 1J21-15 | 5/9 Secondary reference Avox Systems Inc Dba Avox Systems Inc |
| 31D10S | C/1 Advisory reference — outside the item-of-supply concept Measurement Specialties, Inc. |
| 23-012F00M00R00 | 5/9 Secondary reference Concurrent Computer Corporation |
| 31D10S | 5/9 Secondary reference U.S. Government activity |
| 21-012F00M00 | 5/9 Secondary reference Concurrent Computer Corporation |
NSN 5905-00-900-6989 is a Resistor,thermal, manufactured by Honeywell International Inc. Dba Honeywell Div Sensing & Control, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-900-6989 has 3 manufacturer part numbers on file: KA31J1 (Honeywell International Inc. Dba Honeywell Div Sensing & Control), 2553792-4 (Honeywell International Inc. Dba Honeywell International), 2553792-4 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for KA31J1: Temp Points for Resistance Readings at Zero Power: 150.0 CELSIUS FIFTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 0.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 100.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: -60.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC. 25 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.