#8 x 3 inch flat head assembly screw square drive describes a screw sized for heavier fastening where a longer reach is needed, so installers can tie thicker parts together without changing over to a larger diameter fastener. The flat head design allows the head to sit flush with the surface when properly driven, which helps projects present cleanly and keeps surfaces clear for hinges, runners, or other hardware. The square drive detail matches #2 square drive bits, so drivers seat firmly in the recess and torque transfers well during driving. The coarse thread configuration is suited to biting aggressively into the mating material, so the screw advances quickly and holds firmly once driven. The Type 17 auger point at the tip is engineered to start more easily in material by cutting as it enters, which reduces wandering at the start of the drive and supports more accurate placement. The black finish provides a dark, uniform appearance at the head, which can coordinate with darker materials or hardware where a bright head would visually stand out.
The #8 x 3 inch length works with the coarse thread to create strong pull-through resistance as the screw is driven, so parts are drawn tightly together during installation. The flat head profile is intended to sink into the work so surfaces can remain even, which is useful when parts must align precisely along a face or edge. The square drive interface uses #2 square drive bits, which match a common driver size and allow the bit to seat down in the recess for positive engagement. The Type 17 auger point at the leading end cuts its way into the material as it turns, which supports easier starting and more controlled entry when lining up on a layout mark. The black finish on the head presents a consistent dark look at the surface, which matters when the screw head will remain visible in the finished work.
This #8 x 3 inch flat head assembly screw from Wurth Baer Supply is positioned for fastening tasks where a longer screw length is needed in combination with a moderate diameter, so installers can join thicker assemblies without stepping up to a bulkier fastener. The flat head geometry is intended for situations where flush mounting helps components sit tight together, supporting cases, frames, or other built-ups that depend on a smooth surface at the joint line. The coarse thread design lets the screw advance decisively into the material, so each turn works to pull parts together and maintain clamping force across the joint while the fastener is seated. Because the square drive recess is matched to #2 square drive bits, the same driver setup used on other square drive fasteners can be applied here, keeping changes between tasks to a minimum across a run of work. The Type 17 auger point provides a cutting entry at the tip that engages as the screw starts, which matters when positioning close to edges or layout lines where wandering would affect alignment.
The case hardened construction described for this screw means the fastener is processed to create a hard surface, so the screw resists deformation of the head and threads under driving torque during installation. The note that 3/4 inch and 1 inch lengths in the same line are threaded fully while other sizes are threaded two-thirds from the bottom clarifies that the 3 inch version sits within a family whose thread coverage is intentionally specified, so installers can anticipate how much of the shank will be threaded when planning joints that may rely on a partially unthreaded section. The use of #2 square drive bits enables a secure connection between bit and recess, which helps reduce slipping during driving and supports more consistent seating depth over multiple fasteners on a job. The coarse thread is identified as part of the design, and this aggressive profile helps the screw grip material efficiently, which matters when repeated installations demand predictable pull and holding power. The black finish on the head creates a dark appearance at the surface, so in visible locations the screw can align visually with darker components, helping finished work maintain a more uniform look.
This Wurth assembly screw is a #8 x 3 inch flat head design, so it offers a moderate diameter with extended reach and a head profile that sits flush in countersunk applications.
This screw uses #2 square drive bits, allowing the driver to seat securely in the recess for better torque transfer and controlled installation across multiple fasteners.
The Type 17 auger point cuts into material as it starts, helping the screw begin driving smoothly at the mark and supporting straighter entry and more accurate placement.
This black assembly screw has a coarse thread, so it bites aggressively into material and pulls parts together firmly, which supports strong joints in typical fastening tasks.
This screw is case hardened, providing a hardened outer layer that helps the head and threads resist wear and deformation under driving torque in repeated installations.
In this screw line, 3/4 inch and 1 inch lengths are threaded fully, while other sizes are threaded two-thirds from the bottom, clarifying thread coverage when planning joints.
This #8 x 3 inch flat head assembly screw square drive is set up for installers who need a longer coarse thread screw with a Type 17 auger point and black finish. The combination of flat head form, #2 square drive recess, and case hardened construction supports consistent driving, flush seating, and resistance to head damage under torque. For projects needing a dark-headed, coarse thread fastener from Wurth Baer Supply, this screw offers a defined size, drive style, point design, and finish that can be matched to demanding fastening work.
Sold In: 1000 Each
