M4 Thread Expansion Bolt Sleeve Anchor 30pcs for 3mm-12mm Hollow Wall

Key Features

• Main Color Silver Tone; Material Metal
• Package Content 30pcs x Expansion Bolt; Product Name Expansion Bolt
• Weight 196g; Dimension 13(+/-2) x 42(+/-3)mm / 0.5" x 1.65"(Max.D*L)
• Suitable Thickness 3mm-12mm / 0.12"-0.47"; Sleeve Size 7.5(+/-1.5) x 33(+/-2)mm / 0.3" x 1.34"(D*L)
• Thread Size M4 / 0.16" (D*L)

Product Description

Expansion anchor bolt.Features a round slotted/Phillips head.The working principle of expansion screw: Put the expansion screw into hollow wall and then tighten the nuts of the expansion bolt with wrench. The bolt goes outside while the metal sheath does not move. Thus the bigger head of the bolt will expand the metal sheath, making it fill the whole hole. Now, the expansion screw can not be pulled out.Can installed on the plasterboard wall to hold shelf, curtain rod, hallstand, lamps.