I'm just a handyman. A lot of my recent projects require metric screws, usually M3 or M4. I found the Small Parts folks offered a couple of bolts, washers, and nuts for a good price. I don't have many lengths so I decided to buy a few lengths here and trim them down if needed. I don't know if Black Oxide is good or not. But I wanted Phillips heads. Sometimes you can get cheap prices, but a special tool is required to tighten the head. I cut them to the correct length with a dremel tool and the threads were still fine. So I think the quality and hardness of the material should be ok. The price for the lot was good too. These and other screws from Small Parts arrived quickly and I was very happy with the price for the quantity I bought.
Xiaomi MiJia Electric Screwdriver Gun Cordless Screwdriver Black
20 Review
191Pcs Nickel Plated Metal Eye Shape Screws - 9 Sizes, Self Tapping, Silver Color | ECKJ
15 Review
Multifunctional Assorted Screw Eyes Kit β Perfect For Hanging, Jewelry Making And Crafts β 105 Pcs
16 Review
Universal JONNESWAY S04H52494S, 94 pcs, green
11 Review
Highly π Sought-After Fastener: Connector 014973445713
9 Review
π Carriage Prime Line Products GD52103
6 Review
Premium Eapele 4X4 Wood Fence πͺ΅ Post Anchor Base: Secure Your Fence with Ease
8 Review
πͺ Strong and Versatile: National Hardware N222 406 Square Bolts for Secure Fastening
7 Review