Unifix Grade 10.9 HT Hexagon Setscrews M14 X 45 - Silver

It denotes the material strength; 10.9 indicates a minimum tensile strength of 1000 MPa and a yield strength of 900 MPa, making it a high-tensile fastener.

Yes, but they are not stainless steel. In highly corrosive environments, additional protective coatings or regular maintenance may be required.

A standard metric open-ended spanner, ring spanner, or a socket set corresponding to the head size of the bolt.

Yes, as per DIN 933, these are setscrews, meaning they are threaded along the entire length of the shank.

No, this listing is for the setscrews only; nuts and washers should be purchased separately and should match the grade and thread of the bolt.

Check the threads for dirt or debris and verify that the pitch matches the receiving nut or tapped hole.

Ensure the spanner or socket is the correct size and fully seated; if the head is already damaged, replace the bolt immediately.

Verify the torque specifications; ensure you are not exceeding the maximum recommended torque for an M14 Grade 10.9 bolt.