To measure accurate preload, service load and overload of bolted assemblies
For maximum uniformity, efficiency and reliability in bolted assemblies
For effective research, testing and manufacturing of bolted assemblies
Allowable Loads
Allowable loads for Strainsert Hex Head Cap Screws, as tabulated below, are based on approximately 70% Yield Strength of the threads, in pounds.
| Load Capacity Lbs. | ||
| Screw Dia. | Load | |
| 1/4-20NC | 900 | |
| 5/16-18NC | 1500 | |
| 3/8-16NC | 2200 | |
| 1/2-13NC | 4000 | |
| 5/8-11NC | 6500 | |
| 3/4-10NC | 10000 | |
Each cap screw is calibrated to above indicated load as part of quality control procedure. See calibration section for additional calibration certification.
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Unit of Measure
Specifications
Material |
N/A Aluminum Alloy, 2024-T4 |
Hardness |
N/A Rockwell B54 Minimum |
Ultimate Tensile Strength |
N/A 55,000 psi Minimum; 60,000 psi average |
Threads |
N/A Class 2A, rolled |
Thread Length |
N/A 2-diameters + 1/4 inch full threads + 3/16 inch maximum imperfect threads. |
Calibration |
N/A Load & Unload Calibration Load Only Calibration (Standard) |
Performance Specs
Gages Type |
N/A Metal Foil |
Gage Factor (Nominal) |
N/A 2.00 |
Non-Linearity |
N/A ±1% of Allowable Load |
Non-Repetition |
N/A ±0.1% FS |
Excitation |
N/A
350-ohm (Standard) FB: 12V (Maximum) 120-ohm FB: 3V (Maximum) |
Output Signal (Nominal) |
N/A FB: 3.0 mv/V, approx. |
Configuration |
N/A Full Bridge Strain Gage Circuit (Standard) |
Bridge Resistance (Nominal) |
N/A 120 Ω 350 Ω (Standard) |
Service Temperature |
N/A 150°F (Standard) 250°F (Max.) |
