Package includes 8 premium sleeve anchor bolts.390 to .398 hole drill bit tolerance2-1/4 hole depthIdeal for solid concrete, solid brick, and stone1035 cold rolled steelBull nose head ensures threads will not be damaged during installationApproved for cracked and un-cracked concreteThe newly improved wedge anchor has been designed for heavy duty applications with impressive performance characteristics. The advanced design of the collar allows for anchoring in the most demanding requirements.Our wedge anchors are used as anchorage in cracked and uncracked normalweight concrete and lightweight concrete having a specified compressive strength, f′c, of 2,500 psi to 8,500 psi (17.2 MPa to 58.6 MPa) to resist static, wind, seismic tension and shear loads. Package includes 8 premium sleeve anchor bolts .390 to .398 hole drill bit tolerance 2-1/4 hole depth Ideal for solid concrete, solid brick, and stone 1035 cold rolled steel UPC 747960029466 ASIN B084BTN17X Brand BCP Fasteners Color Silver Set Name Wedge Anchor Bolts (8 Piece) Head Type Bull nose Size Name 3/8 x 2-1/4 Unit Count 8 Count Item Weight 10.24 ounces Part Number BCP977 Thread Size 7/16 -16 UNC Thread Type Unc Finish Types Zinc Manufacturer BCP Fasteners Thread Style Right Hand Fastener Size 3/8 x 2-1/4 Fastener Type Anchor Bolt Item Hardness Grade 10.9 Material Type Alloy Steel Item Highlight 1035 Cold Rolled Steel, Bull Nose Head, .390 to .398 Drill Bit Tolerance, Solid Brick and Stone (BCP977) Exterior Finish Zinc Number Of Items 8 Number of Pieces 8 Outside Diameter 0.38 inches Screw Head Style Flat Manufacturer Grade Grade 1035 Compatible Groove Diameter 0.38 inches