- Brand:Â PecoHead Drive Type:Â HexMaterial:Â SteelOverall Length:Â 2-1/4 inThread Size:Â 1/4 in
- Masonry screw at a minimum should be install 10 anchor diameter apart spacing of anchor
- Case hardened high strength steel
- Measurement of minimum embedment depth plus 1/4 in D of installation hole
- Safe working load is one quarter the average proof test load in table above tensile and shear strength
- Each box or jar of masonry screw includes one masonry screw drill bit
- 3/16 x 4-1/2 in drill
- 1 to 1-3/4 in embedment
- 3/4 to 1-1/4 in maximum fixture thickness
- Tensile strength of 615 lb for hollow block and 1138 lb for concrete
- Shear strength of 1058 lb for hollow block and 1604 lb for concrete
- Peco, 3904J, Masonry Screw, 2-1/4 in Overall Length, Hex Head Drive, Steel, 1/4 in Thread