1/4" x 3-1/4" #3 Phillips Flat Head Masonry Screws

Roll over image to zoom in

CRL 3191407 1/4" x 3-1/4" #3 Phillips Flat Head Masonry Screws

Item #: 3191407 by CR Laurence

See reviews See reviews

In Stock $1.19 /each


Buying in bulk

QUICK SHIPPING*Usually ships in 1 business day
+ Add to Wishlist
Buy in Bulk & Save - See How Watch Now

Shop with Confidence

30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.

  • Complete Anchoring System for Concrete Block and Brick
  • Each Box Complete with Masonry Drill Bit
  • Available in Slotted Hex Washer or Phillips Flat Head Styles
  • Heat-Treated Carbon Steel with Blue R-Blocker Coating

Drill Hole

3/16 x 5-1/2 in (140 mm)



Drill Bit Size

3/16 x 5-1/2

Screw Size





Masonry Screw

Head Type


Drive Style


CRL Masonry Screws actually cut into masonry while installing using specially sharp cut threads. They hold strong in concrete, brick or block eliminating the need for expansion anchors, plugs with screws, or power actuated fasteners.
Common applications include: electrical conduit and J-boxes; wall partition brackets; roof flashing; awning brackets; ceiling tie wire brackets; control panels; 1 x 2 wood furring; 3/4" (19 mm) plywood backer boards; sill plates; 2 x 4 wood nailers. Available in either 3/16" or 1/4" (5 or 6 mm) diameters and slotted hex washer or phillips flat head styles.
Each box of 100 screws comes with a carbide tipped drill bit to make the correct size holes. Each screw is coated with Climaseal® corrosion resistant coating.