Wurth #8 x 1-5/8 inch flat head assembly screw describes a case hardened screw sized for joining wood components in assembly work. The #8 diameter and 1-5/8 inch length give a familiar format for fastening common cabinet or woodworking parts where this length is appropriate. The flat head layout lets the screw sit flush to the surface after driving, helping parts draw tight without a raised head interfering with adjacent components or hardware. The square drive system works with #2 square drive bits, giving a positive bit engagement that helps transfer torque into the screw during installation. This reduces cam-out during driving and supports more controlled installation in production or jobsite settings where repeat fastening is required.
The product data notes that 3/4 inch and 1 inch lengths in this series are threaded fully, while all other sizes are threaded two-thirds from the bottom of the screw, so a buyer can expect this 1-5/8 inch size to follow the two-thirds thread pattern that draws parts together while allowing an unthreaded shank near the head. The screw uses #2 square drive bits, giving a defined driver size that installers can match to their tooling for productive work on benches or in the field. The combination of coarse thread and Type 17 auger point supports drilling and pulling action in wood-based materials, so the screw advances efficiently once driving begins.
This fastener sits in the Fasteners|Screws category and is identified as a flat head assembly screw, so it is oriented toward joining parts in woodworking and cabinet-style assemblies where a flush head and firm clamping are valued. The #8 x 1-5/8 inch format fits applications needing moderate penetration into wood components without excessive length, such as fastening rails, stretchers, or built-up panels within casework. Because the screw is case hardened, the surface hardness supports repetitive driving in production or shop environments where many screws are driven in sequence, helping maintain head integrity as bits engage the square recess again and again.
The zinc finish gives the screw a conventional metal appearance suitable for concealed or semi-concealed locations inside cabinetry or furniture-style structures. As an assembly screw, it plays a role wherever parts must be pulled tightly together, with the coarse thread geometry engaging the substrate to draw mating components into contact. The Type 17 auger point assists with starting and feeding in wood material, which supports efficient workflow when several fasteners are used along a joint. Together, these verified details position the screw for general assembly duties where predictable driving, flush seating, and consistent clamping are needed.
The square drive design, working with #2 square drive bits, allows the bit to seat firmly into the recess, so torque transfer stays direct and supported as the screw turns into the workpiece. This reduces tendency for the bit to slip out under load, which helps maintain the recess shape and supports straightforward re-driving if a component must be adjusted and reset. For installers running multiple screws into similar material, this positive engagement assists in maintaining a steady pace without interrupting to address stripped heads.
The coarse thread pattern means each rotation advances the screw more aggressively into the substrate, so fewer turns are needed to bring components tight. In wood assembly, this aids in pulling parts together with less driving time per screw. The two-thirds-from-bottom thread layout on lengths over 1 inch, which this size follows, leaves a portion of unthreaded shank near the head, so the threaded section focuses its grip in the base material while the unthreaded section lets the top member slide, promoting clamping between pieces. The Type 17 auger point contributes a cutting action that helps the screw establish its path into wood, supporting smoother starts during assembly runs.
The Wurth assembly screw in this listing is #8 diameter and 1-5/8 inch long, so it targets wood joints that need moderate penetration and clamping without excessive length.
The #8 x 1-5/8 inch screw uses a square drive that works with #2 square drive bits, so bit engagement is secure and driving torque transfers efficiently during installation.
Screws in this series longer than 1 inch are threaded two-thirds from the bottom, so this 1-5/8 inch version concentrates thread grip toward the tip for effective pulling of joined parts.
The Type 17 auger point provides a cutting-style tip that helps the screw enter wood material and advance during driving, supporting smoother starts in assembly work.
The screw is case hardened, so the hardened outer layer supports strength at the head and shank under driving torque, which is valuable in repetitive assembly operations.
This #8 x 1-5/8 inch assembly screw has a zinc finish, so the screw surface carries a conventional protective metal coating suitable for general indoor woodworking use.
This Wurth #8 x 1-5/8 inch flat head assembly screw combines a square drive, coarse thread, Type 17 auger point, case hardened construction, and zinc finish into one fastener. These verified details support controlled driving, effective pull-together of wood components, and a familiar appearance for shop or cabinet assembly environments. When an assembly task calls for a #8 screw in this length with these drive and threading characteristics, this product provides a defined option with clearly stated attributes that align to common fastening workflows.
Sold In: 3500 Each
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