Question 1

When should I specify reaming instead of drilling?

Accepted Answer

Use reaming when hole size tolerance, finish, or repeatability is critical for fit (pins, bushings, alignment). Drilling is efficient for general holes where standard tolerance is acceptable.

Question 2

What information do you need for threaded holes?

Accepted Answer

Specify thread standard (UNC/UNF or metric), size, pitch, class/fit, depth, and any coating/plating requirements. If functional gauging is required, call it out.

Question 3

When is thread milling better than tapping?

Accepted Answer

Thread milling is often preferred for tougher materials, larger diameters, critical threads, or when you want better control over thread fit. Tapping is typically faster for common threads when conditions are stable.

Question 4

Do coatings affect thread fit?

Accepted Answer

Yes. Plating and certain coatings can change thread fit. Call out finish requirements and any allowance or gauging expectation so the process can be planned correctly.

Question 5

How do you control burrs on holes and threads?

Accepted Answer

We define a burr strategy based on access and functional surfaces, including edge breaks, countersinks/counterbores, and controlled deburr operations aligned to assembly requirements.

Question 6

Can you provide inspection reports for hole patterns and threads?

Accepted Answer

Yes. We can align inspection to your needs (spot checks, sampling plans, or FAI/CMM). Thread gauging and hole verification are planned based on CTQs.

Drilling &Threading

Drilling &Threading