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M12 X 100 Through Bolt BZP PK10

M12 X 100 Through Bolt BZP PK10

Big Bear Bolts

£5.4

BZP means these are zinc plated. Throughbolts are a type of torque-controlled anchor used in concrete , once fixed they expand, they rely on friction and must be installed using a torque wrench. Overall, they are a high-performance anchor that are relatively inexpensive.

Big Bear Bolts's own words, read from their page.

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The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.