Thanks for the Information It's just astechics, and on scope mounts here where it's dry unlike areas that are humid the corrosion factor is very low.
The original bolts were rusty. I did do research on it , and you were correct. I did also use moly on them , and .learned that with such a low torque on rings it should be ok
Thanks for confirming that the question is resolved.
Another thought regarding threads, in case it wasn't mentioned: torque specifications are sometimes with dry threads, and other times with oiled threads.
The purpose for torquing is to apply a tension, a "pull" to the bolt or screw. The tension is created by the amount that the screw or bolt is rotated, but the turning effort or torque has to overcome the rotating friction of the threads and the remaining torque minus the friction applies as tension to the bolt or screw.
Since twisting effort (torque) minus the thread friction = tension on the screw, then anything that increases thread friction with the same applied torque must reduce the tension on the screw, or decreasing thread friction must increase the tension on the screw.
So, lubricating the threads without reducing the torque can result in over tension on the screw. Over tension can result in screw breaking, threads pulling out, or damage to the parts. So, on critical areas, be careful about lubricating if torque is near the limit.
Loctite recommend reducing torque by 10% because of the lubrication by the Loctite.
Here's a Chatgpt:
How much should dry torque value be reduced when threads are oil lubricated?
ChatGPT said:
Thought for 8s
Short answer: about 20–25% less if you lightly oil both the threads and the nut/bolt bearing surface.
A good rule of thumb (same clamp load, same bolt size):
Dry steel (clean): nut factor 𝐾 ≈ 0.20 – 0.25
Light oil (threads + bearing face): 𝐾 ≈ 0.14 – 0.16 → ~25% torque reduction
Threads only oiled: effect is smaller → ~10–15% reduction
Anti-seize: K≈0.10–0.12 → ~30–50% reduction
Moly/graphite assembly lube: K≈0.08–0.10 → ~40–60% reduction
Why: Torque needed is 𝑇 = 𝐾 𝐹 𝑑 T=KFd. Lubrication lowers K, so for the same preload 𝐹 F you use less torque.
Quick example: If a dry spec was 100 N·m (74 ft·lb), with light oil on threads and under-head use roughly 75–80 N·m (55–59 ft·lb).
Always follow the manufacturer’s stated condition (dry vs lubricated). If the spec assumes lube and you reduce torque again, you’ll under-clamp; if it assumes dry and you don’t reduce when lubed, you can over-stretch the fastener.
