Time-Sert 4800BS Universal Head Bolt Kit, M12x1.5 Big Sert

Time-Sert 4800 BS Metric Head Bolt Thread Kit 12×1.5 Oversize

This BS (Big Sert) kit which has an oversize outside diameter is commonly used when Heli-Coil or similar type thread repairs have failed.

10 Inserts are included – PN 52155.

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