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Method of securely fastening screws - comprises split shaft screw and expanding locking bolt with ideal break point which breaks off when screw is turned and bolt spreads split shaft
Method of securely fastening screws - comprises split shaft screw and expanding locking bolt with ideal break point which breaks off when screw is turned and bolt spreads split shaft
The kit comprises a screw (1,2), locking bolt and secondary elements such as nuts. The screw has a bore (4) and the expanding or locking bolt has an ideal break point. After turning the screw the bolt is tightened spreading out the split shaft until it breaks and the upper part can be removed. The rough surfaces between the screw bore and locking bolt prevent it from sliding out. The bore is preferably cylindrical in the upper part and conical in the lower part. The screw shaft is preferably slit up to the bore. ADVANTAGE - Accidental loosening of the screw is prevented.
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