Socket Head Cap Screw Black Steel 1-8 * 13" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity they resist loosening from counterclockwise

they resist loosening from counterclockwise motion

The screws have a thread of 1-3/4-5 and a length of 15

The screws have a thread of 1-8 and a length of 6-1/2

This hexagonal bolt has a length of 8 with a threading of 1-8 [Partially Threaded]

Screws that meet ASTM A574

Socket Head Cap Screw Black Steel 1-8 * 13" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity they resist loosening from counterclockwiseWith a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head. The screws have a thread of 1 8 and a length of 13. Black oxide steel screws are mildly corrosion resistant in dry environments. Coarse threads are the industry standard: choose these screws if you dont know the pitch or threads per inch. Screws that meet ASTM A574, ASTM A574M, and ISO 898 1 comply with