Flat Head Cap Screw Black Steel 5/8-11 * 6" Grade 8 [Cup Point] [Allen Drive] thread_size_m33_3-5 allowing more threads to engage

allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts

This hexagonal nut fit a threading of 1-1/2-6

and ISO898-1comply with specifications and testing requirements for materialquality

They have a standard shoulder with an undersized tolerance to fit most machinery and equipment

Flat Head Cap Screw Black Steel 5/8-11 * 6" Grade 8 [Cup Point] [Allen Drive] thread_size_m33_3-5 allowing more threads to engageMade from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're angled under the head to sit flush within countersunk holes. Length is measured from the top of the head. The screw has a length of 6" and a thread of 5 8 11. Black oxide alloy steel screws have mild corrosion resistance in dry environments.