Patent Number: 6,332,383

Title: Fastening torque control tool in fastening device

Abstract: The fastening torque control tool for a fastening device herein includes a base portion which is fixed onto a head portion of the fastening device in a way that restricts relative rotation around the device's axis. The tool has an operational portion which is integrally provided with the base portion on the same axis. The operational portion is fixed into a fastening instrument to turn the fastening device in a way that restricts relative rotation around the axis. The control tool also contains a separating portion for separating the operational portion from the base portion when a fastening torque, which is applied to the operational portion, reaches a predetermined level. The separating portion is formed between the base portion and the operational portion.

Inventors: Komatsu; Kazuo (Tokyo, JP)

Assignee: NEC Corporation

International Classification: B25B 23/14 (20060101); B25B 023/153 ()

Expiration Date: 12/25/2018