hi, these are left from my glory days, i guss i will not use them any more. they are used for ether screws or better threaded rod 5/16 or 3/8 of an inch. the 5/16 needs a 10.00 m"m hole in the concrete and the hole should be a list 28 m"m deep.
LOT OF OVER 550 NEW M10-20 ZINC PLATED GRADE 8.8 SOCKET HEAD MACHINE SCREWS. THIS IS A GREAT OPPORTUNITY FOR SOMEONE WHO NEEDS THEM TO BUY THEM IN BULK AND SAVE A HUGE AMOUNT OR FOR SOMEONE TO BUY THEM AND RESELL THEM FOR A SIGNIFICANT PROFIT.
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