the hardness rating is HRC 24-35

1 1/8-12 x 3 Socket Cap Screw Alloy

10 x 1 Simpson Pancake-Head Screw - Square Drive 410 SS - Carton (1000)

8 x 1 5/8 Simpson Bugle-Head Wood Decking Screws - 6-Lobe Drive 305 SS - 1 lbs Pack (150)

3/16 x 3 Powers Round Toggle Bolt Zinc Plated (50)

5/16 x 12 ITM SDS Plus eVolution™ Hammer Drill Bit Nylon Insert Locknuts Zinc Plated the hardness rating is HRC5 16 x 12 ITM SDS Plus eVolution Hammer Drill Bit . An all new designed solid 4 x 90? head symmetry and 4 symmetrical functioning spiral ridges for fast, accurate and tough drilling through all aggregates, concrete, masonry, brick, stone and rebar. 50% more holes Drills rebar No "sticking" Less breakage Less vibration Made in Germany