Flat Head Cap Screw Black Steel 1/2-13 * 9" Grade 8 [Cup Point] [Allen Drive] asme_b18-5 They include a tag that

They include a tag that shows the material

Coarse threads are the industrystandard:choose these screws if you don’t know the pitch or threads per inch

This hexagonal bolt has a length of 12" with a threading of 5/8-11 [Partially Threaded]

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

This hexagonal bolt has a length of 4-1/2" with a threading of 1-14 [Partially Threaded]

Flat Head Cap Screw Black Steel 1/2-13 * 9" Grade 8 [Cup Point] [Allen Drive] asme_b18-5 They include a tag thatMade 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 9" and a thread of 1 2 13. Black oxide alloy steel screws have mild corrosion resistance in dry environments.