
The Strong-Drive SDHR Combo-Head screw is a structural fastener designed for cross-laminated timber construction, mass timber construction and general interior applications. These partially threaded, sturdy 0.394"- and 0.472"-diameter structural fasteners are designed to pull structural members together while providing excellent connection strength — especially when connecting steel plate connectors to wood. The unique “combination” head allows for effortless driving using either a hex driver bit or T40 6-lobe driver bit. The SDHR Combo-Head has an interior-grade, blue-zinc coating, a robust knurled shaft and Type-17 point for fast starts and low-torque driving.
Model No. | Coating/Material | Length (in.) | Head Diameter (in.) | Shank Diameter (in.) | Drive Type | Head Type | Thread Length | Point Type | Packaging Qty. |
---|---|---|---|---|---|---|---|---|---|
SDHR27400 | Blue-Zinc Coated | 4 | 0.590 | 0.275 | T40 6-Lobe or Hex-Head | Combination | 2.15 | Type-17 Point | 100 |
SDHR27400-R25 | Blue-Zinc Coated | 4 | 0.590 | 0.275 | T40 6-Lobe or Hex-Head | Combination | 2.15 | Type-17 Point | 25 |
SDHR27614 | Blue-Zinc Coated | 6 1/4 | 0.590 | 0.275 | T40 6-Lobe or Hex-Head | Combination | 4.30 | Type-17 Point | 100 |
SDHR27614-R25 | Blue-Zinc Coated | 6 1/4 | 0.590 | 0.275 | T40 6-Lobe or Hex-Head | Combination | 4.30 | Type-17 Point | 25 |
SDHR31400 | Blue-Zinc Coated | 4 | 0.669 | 0.315 | T40 6-Lobe or Hex-Head | Combination | 2.15 | Type-17 Point | 100 |
SDHR31400-R25 | Blue-Zinc Coated | 4 | 0.669 | 0.315 | T40 6-Lobe or Hex-Head | Combination | 2.15 | Type-17 Point | 25 |
SDHR31614 | Blue-Zinc Coated | 6 1/4 | 0.669 | 0.315 | T40 6-Lobe or Hex-Head | Combination | 4.30 | Type-17 Point | 100 |
SDHR31614-R25 | Blue-Zinc Coated | 6 1/4 | 0.669 | 0.315 | T40 6-Lobe or Hex-Head | Combination | 4.30 | Type-17 Point | 25 |
DWG | DXF | RFA | IFC | SAT | |||
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