High Temperature M3 Threaded Thermistor

M3 threaded 100K high-temperature thermistor for hotend heater blocks. This Trianglelab screw-in sensor uses an ATC Semitec 104NT-4-R025H42G NTC element in an M3/M4-style metal package for V6/Volcano-class 3D printer hotends that need a secured thermistor instead of a loose glass bead.

Why use a threaded thermistor

• Positive retention: the metal threaded body fastens into a compatible heater block so the sensor is less likely to walk out during service or wire movement.
• High-temperature 100K curve: Trianglelab documents the 104GT-2 / 104NT-4-R025H42G thermistor for heater-block use up to 280°C; the ATC Semitec NT-4 glass thermistor family is rated for -50°C to 300°C.
• Firmware-friendly: use the ATC Semitec 104NT-4-R025H42G / 104GT-2 profile; in Klipper that is sensor_type: ATC Semitec 104NT-4-R025H42G.

Specifications

• Sensor type: ATC Semitec 104NT-4-R025H42G NTC thermistor
• Resistance: 100 kΩ at 25°C
• B value: 4267 K, 25/85°C, ±2%
• Resistance tolerance: ±3%
• Mounting: M3 threaded metal hotend sensor body; Trianglelab lists M3/M4-compatible sets
• Lead set: white high-temperature leads with crimp terminals and housing shown
• Common fit: compatible heater blocks that accept an M3 threaded thermistor, including many V6/Volcano-style hotend blocks

Fitment and setup notes

• Pair it with a heater cartridge such as the 24V 40W heater cartridge, slim 24V 40W heater cartridge, or 24V 50W 2m heater cartridge when rebuilding a hotend.
• For higher-temperature builds above this thermistor's documented range, use a PT100/PT1000-style sensor instead; we also carry a PT1000 temperature sensor.
• Do not install this into a block that expects a smooth 3 mm cartridge sensor or a different thread size. Confirm the heater-block sensor bore before ordering.