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Screws are the highest-turnover line in any trauma inventory, and they are bought by specification: diameter, thread form, locking or non-locking, self-tapping or pre-drilled. The stock on this page covers the full matrix: cortical screws from 2.7 to 5.0 mm, cancellous screws in 4.0 and 6.5 mm with full and partial thread options, locking screws across the standard diameters, cannulated screws including the Magna-FX mini-fragment series, and specialty options such as cobalt-chrome variable-angle locking screws and low-profile periarticular screws.
BoneCraft is an independent distributor of genuine Zimmer Biomet products. Every screw on this page is original factory stock with full batch traceability, supplied at wholesale terms to hospitals, regional distributors and purchasing groups. Screws ship as stand-alone replenishment or consolidated with the plate systems they belong to.
| SCREW TYPE | THREAD / DRIVE | MATERIAL | DIAMETERS | NOTES |
|---|---|---|---|---|
| Cortical Screw, non-locking | Full thread, self-tapping & standard | Stainless steel / titanium | 2.7 / 3.5 / 4.5 / 5.0 mm | Small and large hex head options |
| Cortical Locking Screw | Full thread, locking head | Stainless steel | 2.7 / 3.5 / 4.5 mm | For fixed-angle plate systems |
| Cancellous Screw | Full & partial thread | Stainless steel / titanium | 4.0 / 6.5 mm | Partial thread for lag compression |
| Cancellous Locking Screw | Full thread, locking head | Stainless steel | 4.0 mm | For periarticular locking plates |
| Cannulated Screw | Full & partial thread | Stainless steel / titanium | 3.0 / 3.5 / 4.0 mm | Guide-wire placement |
| Magna-FX Mini-Fragment Cannulated Screw | Partial thread | Titanium alloy | 4.0 mm | Lengths 26 – 105 mm |
| NCB Self-Tapping Screw, cortex & cancellous | Self-tapping, locking head | Titanium alloy | System diameters | For NCB polyaxial plates |
| Variable-Angle Locking Screw | Locking head | Cobalt-chrome-molybdenum | 3.5 mm | For multi-directional locking plates |
| Low-Profile Cortex Screw, ALPS T15 | Full thread, low-profile head | Titanium alloy | 3.5 mm | T15 drive, reduced head prominence |
| Periarticular Cortex Screw | Full thread | Stainless steel | 3.5 mm | For periarticular plate systems |
| Smooth Locking Peg | Smooth shank, locking base | Stainless steel | 4.0 mm | Humeral head support, peg-compatible plates |
As an independent distributor with 2,800+ SKUs in stock, we supply genuine, FDA-cleared and CE-marked trauma implants at wholesale prices — every unit factory-packaged, lot-traceable and ready to ship worldwide.
The stock covers the full fixation matrix: cortical screws in the standard small and large fragment diameters, cancellous screws with full and partial thread options, locking screws for fixed-angle systems, cannulated screws including a mini-fragment series, self-tapping screws for polyaxial plate systems, variable-angle locking screws in cobalt-chrome, and low-profile screws for periarticular work. Both stainless steel and titanium versions are held.
The two screws are built for different bone. A cortical screw has a fine, shallow thread with a small pitch, designed to grip the dense outer shell of bone along the shaft. A cancellous screw has a deep, coarse thread with a wide pitch, designed to bite into the soft spongy bone at the ends of long bones. Using the wrong thread form for the bone density means poor purchase, which is why orders should always state both diameter and thread family.
A full-thread screw grips along its whole length and is used for positional fixation, holding the plate or fragment where it sits. A partial-thread screw has a smooth shank near the head, so the thread bites only the far fragment and pulls it toward the near one as the screw tightens. That compression effect is the lag screw principle, and it is why partial-thread cancellous screws are standard for joint-surface fragments.
A cannulated screw is hollow down the center and slides over a thin guide wire placed first under imaging. The wire fixes the trajectory before the screw is committed, which matters in small or deep-seated fragments where a freehand screw would wander. Mini-fragment cannulated series extend the same principle to the foot, hand and wrist. The final choice belongs to the operating surgeon.
BoneCraft is an independent distributor of genuine Zimmer Biomet products, and every screw we ship is original factory stock. Each order carries batch and lot traceability, original labeling and packaging, and the export documentation your import process requires. Screws enter the body like any implant, and tender reviews check their proof of origin line by line.
Yes, and this is how most screw business is done. Orders mix cortical, cancellous, locking and cannulated types across diameters, and screws consolidate with the plate systems they serve in a single shipment. Stocked items dispatch quickly, and lead time for larger or non-stock specifications is confirmed with the quotation against your list.
Screws look like the simplest line in a trauma catalog, and they cause the most stocking errors: the wrong thread family in the wrong diameter sits dead on the shelf, while the fast movers run out. The notes below reflect how screw inventory actually behaves.
Cortical and cancellous screws share a shelf but serve different bone, and their demand curves differ. Cortical screws, with fine threads for dense shaft bone, move in the highest volumes because every plate construct uses several. Cancellous screws, with coarse threads for the spongy bone near joints, move less often but in more variations: full thread for position, partial thread for lag compression across a fracture line. A working stock holds cortical screws in the full diameter spread, and cancellous screws in both thread forms, because an account that runs out of either stops ordering the plates that go with them.
Modern plate systems changed the screw mix. Fixed-angle locking plates need locking screws with threaded heads, polyaxial systems need self-tapping screws that cut their own path at an angle, and multi-directional locking plates take variable-angle screws in harder alloys such as cobalt-chrome. Non-locking self-tapping cortical screws remain the volume standard for conventional plating. When we map an order, the plate systems the account runs decide the screw ratios, and matching screws to systems is part of the quotation work here.
| SCREW FAMILY | THREAD | TYPICAL DIAMETERS | ROLE IN STOCK |
|---|---|---|---|
| Cortical | Fine, full thread | 2.7 – 5.0 mm | Highest turnover, every plate construct |
| Cancellous | Coarse, full & partial | 4.0 / 6.5 mm | Joint-area fragments, lag compression |
| Locking | Threaded head | 2.4 – 4.5 mm | Fixed-angle plate systems |
| Cannulated | Full & partial, hollow core | 3.0 – 4.0 mm | Guide-wire precision, specialty margin |
Standard cortical and cancellous screws compete on price and availability. The specialty end competes on having it at all: cannulated screws in mini-fragment sizes with long length ranges, low-profile screws that reduce soft tissue irritation around joints, smooth pegs for humeral head support, and variable-angle locking screws for multi-directional plates. These are the lines that win accounts, because a surgeon who specifies them will switch supplier over a single missing size.
Screws are implants, and they pass the same origin checks as plates in tender and regulatory review. Every shipment from BoneCraft carries batch traceability back to the original production lot, original labeling, and the export documents for customs and tenders. Screw orders consolidate with the plate systems they serve, and documentation is issued per shipment for the whole consignment.
