Hole position and intersecting edges
Specify hole diameter and its axial and angular position from a functional datum. Explain whether it takes a pin, locking wire or a flow passage. Inspect the intersection and edge condition as required; an external hole entrance does not establish that the internal exit is free of a harmful burr.
Review the route before fixing the quotation
For cross-drilled & head-hole screws, review Secondary & Precision Operations, Swiss-Type & CNC Turning, Cleaning, Locking & Assembly against the drawing and quantity. Identify which features can be produced in the initial shape and which require a separate setup. A change to a functional shoulder, bore, drive or thread can change the proposed route as well as the inspection effort.
The drawing review should resolve hole position; edge condition; functional interface. Keep material condition and finishing allowance attached to those requirements. Define the acceptance condition for critical features and approve any proposed dimensional change before comparing samples with the original assembly.
From drawing to approved samples
State the intended retention method and load requirements; a cross hole alone does not establish secure retention. Identify the drawing revision, prototype quantity and expected repeat demand. Where the first part is based on an existing sample, separately confirm material and hidden features rather than inferring them from appearance.
The typical sampling lead time, including tooling, is approximately 10–15 days. The schedule is confirmed after drawing review and agreement on the sample specification; material availability, special treatment and inspection requirements can affect the confirmed date. Confirm when the agreed schedule starts in the quotation. Sample approval and repeat-production delivery are separate milestones.

