HOLO-KROME 60048 #10-24 X 3/4" 六角穴付き皿頭キャップスクリュー | 合金鋼 熱処理黒色酸化皮膜 (100本/パック)

The black oxide finish on these flat head screws is way more consistent than the last batch I grabbed from a hardware store, and the hex socket drive seats perfectly on my ball-end driver. Used them to rebuild a small jig for my drill press and every one of the 100 seated flush without a single stri

I've been through three packs of these on jigs and fixtures, and the thermal black oxide finish holds up way better than plain steel—no rust after months of coolant exposure. The socket drive grabs tight with a hex key, so I never strip the heads even when I'm torquing them into hardened tooling.

The flat head sits flush perfectly in my jig fixture, and the hex drive made installation quick without stripping. These #10-24 screws feel much more robust than the standard hardware store stuff I've been using.