Würth #8 x 2-1/2" Flat Head Assembly Screw Square Drive - Type 17 Auger Point Coarse Thread Zinc, 3670000356961 2500 - 2500/Box

#8 x 2-1/2 Flat Head Assembly Screw Purpose

#8 x 2-1/2 flat head assembly screw describes a screw sized for general assembly work where a flat head sits flush in a countersunk hole, which helps furniture and cabinet parts pull tight and stay aligned during construction. The screw uses coarse thread, so it bites quickly into typical construction and woodworking materials, helping joints draw together without long run times. The Type 17 auger point is designed to start into material efficiently, which reduces drive effort at the tool and supports controlled starts in assembly fixtures. A square drive recess works with #2 square drive bits, giving positive engagement between bit and screw for consistent driving. The screw is case hardened, so the outer surface is hardened for driving strength while still supporting its fastening role in assembly work. A zinc finish provides a basic protective coating on the screw surface, which supports its role in general indoor fastening tasks.

Key Assembly Screw Details That Matter On Site

• The Wurth flat head assembly screw uses coarse thread, which advances quickly through material for faster assembly cycles on repeated cabinet or fixture builds.
• The Type 17 auger point on this assembly screw is intended to cut into material as it starts, helping the screw feed smoothly and reducing wandering at the start of the drive.
• The #8 by 2-1/2 inch size gives a balance of penetration and holding power that suits many structural joints, so crews can standardize on one length for a range of assemblies.
• The square drive recess is matched to #2 square drive bits, creating a positive fit between bit and fastener that supports steady driving in both hand-held and bench setups.
• The screw is case hardened with a zinc finish, combining a hard driving surface and coating that supports its role as a general-purpose indoor assembly fastener.

Assembly Screw Drive And Thread Use Details

This Wurth #8 x 2-1/2 flat head assembly screw uses a #2 square drive, so it works with common square drive bits already used in many shops and on job sites. The coarse thread pattern engages quickly in suitable substrates, which lets installers draw parts together using fewer turns per screw. The Type 17 auger point is designed to remove material as the screw starts, which helps the screw enter with less resistance in appropriate applications. Case hardened construction provides a hardened exterior surface around the drive and threads, helping the screw tolerate driving torque in powered tools. The zinc finish coats the screw, which supports its use where a basic plated fastener is appropriate for assembly work.

Using This Wurth Assembly Screw In Daily Work

Where This #8 x 2-1/2 Screw Fits Best

This Wurth flat head assembly screw at 2-1/2 inches long is positioned for assemblies needing deeper penetration than shorter cabinet screws, supporting joints where longer embedment is useful. The flat head profile is suited to countersunk holes, so once driven, the head sits down into the material to leave a flat bearing surface across hardware or mating parts. Coarse thread construction is aligned to substrates where a more aggressive thread is appropriate, helping joints clamp together as the screw advances. The Type 17 auger point is designed to start more cleanly into these materials, which can help maintain alignment when parts are held in jigs or by hand during assembly operations. The zinc finish supports use wherever a plated screw is suited to the environment, keeping the fastener aligned with typical interior fastening tasks.

Why Drive, Thread, And Hardening Support Repeatability

The #2 square drive interface matches a widely used bit style, so installers can rely on familiar tooling that engages positively with the recess to reduce cam-out during repeated driving. Case hardened construction adds a hardened outer layer to the screw, which supports the drive recess and threads as they experience torque from powered drivers over many cycles. Coarse thread geometry helps the screw advance with each rotation, so on production runs the driving time per fastener is kept in a practical range. The Type 17 auger point is intended to cut a path as it enters, which can lessen initial resistance and support more consistent seating when driving into appropriate materials. Together with the zinc finish, these characteristics allow this screw to serve as a general-purpose assembly fastener where this combination of drive style, point, thread, and finish is specified.

Common Questions About This Wurth Assembly Screw

Selecting This Screw For Assembly Jobs

This Wurth #8 x 2-1/2 flat head assembly screw with coarse thread, Type 17 auger point, #2 square drive, case hardening, and zinc finish gives a defined combination of size and features for indoor assembly tasks. The partial threading pattern on this length supports clamping between shank and threads in appropriate joint designs. Ordering in full box quantities aligns with repeat-use environments, while available discounts for bulk box orders support higher-volume shops. When this exact size, drive, and thread configuration matches the fastening details for a project, choosing this screw keeps assembly work aligned with the specified Wurth fastener system.