Drilling thickness capacities: up to

6 x 2 Square Bugle Decking Screws Dacrotized - Carton (3500)

9 x 2 1/2 Star Flat Decking Screws w/ Nibs W

Load values exceed those of larger diameter lag screws

1 1/4-7 x 6 A325 Type 1 Heavy Hex Bolt Plain (15) Square Flat-Head Self Drilling Screws with Wings 410 Stainless Steel Drilling thickness capacities: up to1 1 4 7 x 6 A325 Type 1 Heavy Hex Bolt Plain (15) . Heavy Hex A325 structural bolts are designed for steel to steel structural connections. For this reason, they are typically very short. The A325 and A490 specifications are not intended for general applications, including anchor bolts. Free certs available on request.