$260–$480 / pc
Indicative mV/V bare-sensor range. MOQ one for prototype review.
PRODUCTS BY STYLE / MT-THL-B
Through-Hole Bolt & Clamping Force Washers
Measure the axial clamp reaction around a bolt. Specify the actual bolt diameter, washer stack, maximum preload and any loss of force through parallel structure.
CONFIGURE / EMAIL / REQUEST CAD
Your dimensions. One engineering brief.
Email config & request STEP ↗Dimensions above convert to mm in the reference. $260–$480 indicative bare-sensor range; MOQ one. Confirm the selected drawing, interface, calibration and dispatch in your quote.
M4–M30 / 1/4–1 IN REQUEST SCOPE
Bolt size, preload and washer contact are separate decisions.
The B family covers 2–500 kN requests. M4/M5/M14/M30 and imperial sizes need a selected dimensional drawing; the matrix below contains the supplied M6–M24 envelope records. Anti-rotation and matched loading washers are part of the assembly review.
| Bolt direction | Supplied bore options (mm) | Force options (kN) | Range decision |
|---|---|---|---|
| M6 / M8 / M10 / M12 | 6.4 / 8.4 / 10.5 / 13.0 | 15 / 25 / 40 / 60 / 80 | Select against actual maximum preload and assembly overshoot. |
| M16 / M20 / M24 | 17 / 21 / 25 | 100 / 160 / 250 / 350 | Include joint stiffness, bending and operational load increments. |
| M4 / M5 / M14 / M30 or imperial | Drawing-specific | Within reviewed 2–500 kN scope | No universal force rating follows from nominal bolt size alone. |
ISO 16047 test-method scope and VDI 2230 joint-design scope inform the measurement plan; neither supplies a universal sensor-range table for every bolt.
Calculate K from measured torque and clamp force.
K = T / (F × d), with T in N·m, F in N and d in metres. Use measured assembly values; K includes the effects of the tested thread and bearing friction.
The 1.25× / 1.5× values illustrate headroom selection, not universal ISO/VDI safety factors. Include preload, operating peak, dynamic overshoot, bending and sensor overload limits in the final selection.
MODEL OPTIONS / DIMENSION MATRIX
Choose ID × OD × height.
| Model | ID / nominal thread | OD | Height | Capacity options | Non-linearity / interface | Drawing & quote |
|---|---|---|---|---|---|---|
| MT-THL-B-M06–M12Range row: individual bolt size sets OD/H; allow approximately 4 mm extra for the quoted washer pair. | 6.4 / 8.4 / 10.5 / 13 | 18–28 | 6–10 | 15000 / 25000 / 40000 / 60000 / 80000 | ±0.20% FS IP67 / IP68 optionAnti-rotation slot / washer pair | Get STEP & PDF →Configure → |
| MT-THL-B-M16–M24Range row: determine the selected bolt size, loading faces and final stack height. | 17 / 21 / 25 | 36–52 | 12–16 | 100000 / 160000 / 250000 / 350000 | ±0.20% FS IP68 optionSealed cable / ground washer pair | Get STEP & PDF →Configure → |
LOAD INTRODUCTION / KEEP THE COVER CLEAR
Load the active ring. Support the outer ring.
The relieved cover protects the strain-gauge region. A washer must bear on the designated land without touching the cover or connecting the moving load to the fixed support.
Mounting review targets
Contact surface ≥40 HRC; flatness ≤0.01 mm. Matched washer option targets HRC 48 and ≤0.005 mm flatness. Confirm parallelism, loading-land diameters and installed stack height.
Raised hub steps and recess depth are specified on the selected drawing. Factory electrical pairing does not remove the need to assess force shunts, support flexibility or installed preload.
Read the mounting guide →BRIDGE / DEFLECTION / INTERFACE
Specify the mechanical and electrical handoff together.
| Parameter | Quotation specification | Selection consequence |
|---|---|---|
| Full Wheatstone bridge | 700 Ω preferred for FUTEK-family review; 350 / 1000 Ω options | Check excitation loading, output resistance and self-heating together. |
| Rated output | 1.5–2.0 mV/V nominal direction | Confirm actual calibrated span, zero and conditioner input range. |
| Excitation | By selected MT model and thermal review | FUTEK LTH300/400 list 18 V maximum; that value is not automatically assigned to every MT model. |
| Rated-load deflection | 0.02–0.05 mm design target for specified configurations | Request a model-specific value; axial stiffness k = F / δ. Thin large-bore designs need their own evaluation. |
| Natural frequency | Request the model/fixture data and bandwidth | Body frequency, assembled resonance, sampling rate and filter latency are different quantities. |
| Connector / identification | Cable, CC19, M5/M8/M12 or remote sense; optional TEDS33 | Check contact count, keying, pin assignment, sealing and reader/template compatibility. |
PROTOTYPE TO OEM / DIRECT QUOTATION
Price the complete measurement chain.
Illustrative configuration: $340 sensor + $25 washer pair + $145 standard conditioner = $510/set. Multi-channel, EtherCAT and special environmental options are quoted separately.
Volume quote bands: 1–4 prototypes; 5–19 pieces with a target 15% reduction; 20–49 pieces with a target 25% reduction; 50+ annual OEM agreement. Eligible ID/OD modifications target $0 NRE; new elastic-body designs require a separate review. Final pricing and dispatch appear in the formal quotation.
Review delivery & OEM terms →Resolve fit, signal and loading before ordering.
Can I use a metric shaft with an imperial bore?
Check the actual clearance, runout and thermal range. Nominal inch conversion alone does not establish an assembly fit.
Are washers and paired conditioning included?
Choose the +$25 washer pair and +$145 standard conditioner options in your brief. The quote confirms the selected load interface, signal and calibration scope.
What establishes replacement compatibility?
The original part number and revision, dimensions, loading faces, bridge resistance, excitation, pinout and calibration must match the accepted replacement specification.
QUOTE / CAD / CALIBRATION SCOPE
Your dimensions go straight to engineering.
Send the selected model, interface and application. Request a 2D tolerance drawing, 3D STEP model and a sensor-only or paired-system quotation.
[email protected]Initial-response target: 4–12 business hours, normally within one business day. Drawing turnaround and dispatch are confirmed with the configuration.
Compare adjacent load paths.
01 / MT-THL-D↗
100 N–200 kN02 / MT-THL-B↗
2–500 kN03 / MT-THL-T↗
200 N–100 kN04 / MT-THL-LP↗
500 N–20 kN light force / to 500 kN heavy05 / MT-AMP-KIT↗
System calibration required
Smooth donut
Ball and roller screw thrust, bearing reaction and fixture clamping
3–50 mm / 1/8–2.0 in100 N–200 kN02 / MT-THL-B↗
Bolt force washer
Bolt preload monitoring, flange clamp force and torque-to-tension studies
M4–M30 / 1/4–1.0 in2–500 kN03 / MT-THL-T↗
Threaded tension / compression
Hollow-shaft tests, center-hole jacks and cable tension fixtures
M6–M36 / TF & TS interfaces200 N–100 kN04 / MT-THL-LP↗
Large-bore annular ring
Robotic hollow joints, hollow-shaft motors and wafer press fixtures
40–120 mm / large-bore options500 N–20 kN light force / to 500 kN heavy05 / MT-AMP-KIT↗
Conditioning & acquisition
PLC press control, paired sensor acquisition and multi-bolt force monitoring
Matched to selected sensorSystem calibration required