Metal Bone Screws segmentation by type distinguishes self‑tapping, self‑drilling, and locking variants, each contributing uniquely to market volume. Self‑tapping screws, representing approximately 40 % of sales, rely on pre‑drilled pilot holes and are favored in procedures where bone density is moderate, offering a balance between insertion torque and pull‑out strength. Self‑drilling screws, accounting for roughly 35 % of the market, incorporate an integrated drill tip that eliminates the need for a separate drilling step; this reduces operative time and is preferred in high‑throughput trauma settings, thereby expanding the addressable volume. Locking screws, comprising the remaining 25 %, feature a threaded head that mates with a corresponding plate, delivering angular stability essential for complex spinal constructs and osteoporotic bone fixation. The distribution of these types reflects surgeon preference, procedural complexity, and cost considerations, collectively shaping the total market size and guiding R&D allocation across material alloys and surface‑treatment technologies. Manufacturers that prioritize modular design and alloy optimization can capture incremental share within each type segment, reinforcing overall market growth.