Pack of 20 M6 x 40 mm hexagonal socket anchor screws

Applications: Widely used in fences, burglar-proof gates and awnings, air conditioning rack mounting, home decoration, engineering, etc. M6 x 40 mm expansion anchor bolt with flat washer and hex nut. The operating principle of the expansion bolt: Place the expansion bolt in the ground or hole, then tighten the nuts on the expansion bolt with a wrench. The bolt will expand while the metal sleeve remains stationary. The larger part of the bolt will then expand the metal sleeve, allowing it to fill the entire hole. The expansion bolt will then be permanently secured.