Simpson MIT4.28/11.88 Top-Flange Joist Hanger for 4-1/8x11-7/8 LSU Adjustable Rafter Hanger What do the diamond holes

What do the diamond holes on the CCO4

or chloride-heavy environments where inferior fasteners would corrode and stain the deck surface

Solid steel helical insert head with 174 four-sided carbide inserts eliminates need for adjustment after changing knives

adjustment work

Simpson MIT4.28/11.88 Top-Flange Joist Hanger for 4-1/8x11-7/8 LSU Adjustable Rafter Hanger What do the diamond holesThe Simpson MIT4. 28 11. 88 MIT Galvanized Top Flange Joist Hanger for 4 1 8 in. x 11 7 8 in. Engineered Wood by Simpson Strong Tie is engineered to support 90 deg. connections of I joists to headers, delivering maximum down loads with a minimum number of fasteners. Designed for installation before the joist is placed, this top flange hanger features a Funnel Flange design for easier member placement and positive angle nailing (PAN) specifically