When short bolts will not fit in the bolt tension calibration device how can they be tested?
Because devices such as the Skidmore have a minimum bolt length, testing of shorter bolts can be accomplished in any convenient steel plate by the use of a washer-type direct tension indicator (DTI). A similar DTI must first be tested using a longer bolt in the bolt tension calibration device to verify that they are neither under nor over strength. Alternatively, a calibrated torque may be determined using a bolt tension calibration device and a longer bolt with a hardened washer under the turned element. This torque may then be used for testing shorter bolts with a hardened washer under the turned element in a steel plate, provided lubrication and condition of threads for the long and short bolts are similar.
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