Socket Head Cap Screw Black Oxyde Alloy Steel 1/2-13 * 10" Grade 8 [Cup Point] [Allen Drive] grade-10-9 The nuts have a 2-1/4-12

The nuts have a 2-1/4-12 thread

This hexagonal bolt has a length of 4" with a threading of 1-1/4-7 [Partially Threaded]

It is made of black plated and thus provide medium resistance to corrosion in both dry and wet environments

This hexagonal bolt has a length of 7" with a threading of 3/4-10 [Partially Threaded]

Socket Head Cap Screw Black Oxyde Alloy Steel 1/2-13 * 10" Grade 8 [Cup Point] [Allen Drive] grade-10-9 The nuts have a 2-1/4-12With a tensile strength of170, 000psi, these alloy steel screws are stronger than Grade 8 steelscrews. Length is measured from under the head. Black oxide steel screws are mildly corrosion resistant in dry environments. Coarse threads are the industrystandard: choose these screws if you dont know the pitch or threads per inch. Screws that meet ASTMA574, ASTMA574M, and ISO898 1comply with specifications and testing requirements for materialquality.