FastCap #8 x 2-1/2" Flat Head Wood Screw Square Drive - Type 17 Auger Point Coarse Thread Black, PH.BL.2.5"-150PC - 150/Box

A 2-1/2 Inch Wood Screw Built for Through-Panel and Thick-Stock Fastening

The Fastcap #10 x 2-1/2" PowerHead flat head wood screw is a coarse-thread, square-drive fastener sized to reach through standard 3/4-inch panels and bite deep into a second member. The Type 17 Auger point reduces the torque needed to start and drive the screw, while underhead nibs help the flat head mill its own countersink flush in solid wood, plywood, and dense composite panels. Packed 150 to the box in a Black finish.

Key Features

• 2-1/2 inch length gives enough bite to pass through 3/4-inch stock and seat solidly into the member behind it.
• Type 17 Auger point uses a fluted tip to cut wood fibers and clear chips, reducing driving torque and the risk of splitting on entry.
• Flat head with underhead nibs mills a clean countersink as the screw seats, leaving the head flush without a separate countersink step in most wood substrates.
• Coarse thread provides strong withdrawal resistance in solid wood, plywood, and softwood-based sheet goods.
• #2 square drive recess is designed to hold the screw on a correctly sized bit for controlled, one-position placement.
• Black finish keeps fastener heads visually low-profile in dark-painted, stained, or interior-finished assemblies.

Where This Length Does Its Best Work

At 2-1/2 inches, this screw is sized for joints where the fastener needs to travel through a full panel before it starts pulling. Attaching a 3/4-inch shelf cleat to a cabinet side, securing a stretcher rail through a face frame, or fastening nailer strips to the inside of a cabinet box are all situations where a shorter screw runs out of thread before it runs out of joint. The 2-1/2 inch length threads fully into the receiving member with room to spare, so the coarse thread can develop its full holding power. The Black finish suits interior cabinetry and shop furniture where exposed fastener heads should blend rather than stand out.

Point, Head, and Drive Working Together

The Type 17 Auger point has an extended flute that clears chips ahead of the thread, which keeps driving torque manageable in dense wood and reduces the pressure that causes face grain to split near an edge. Once the screw reaches the surface, the flat head with nibs takes over: the underhead ridges mill wood fibers outward as the head descends, seating the head flush without tearing the face. The #2 square drive recess transfers torque cleanly from the bit to the screw, making it practical to drive in tight cabinet interiors where a Phillips bit would want to skip out under load.

The Right Fit for Cabinet Shops and Finish Carpenters

This screw suits production cabinet shops driving repetitive fasteners into plywood and hardwood panels, finish carpenters attaching blocking and nailers in confined spaces, and woodworkers building shop fixtures and furniture where a flush black head matters. Coarse thread is the right choice for softwoods, plywood, particleboard, and MDF. For hardwood face-frame joinery specifically, a fine-thread face-frame screw is the better fit, but for general cabinet carcass work, cleat attachment, and solid wood assemblies in pine, poplar, or birch plywood, coarse thread provides the pull-out resistance and fast engagement the job calls for. The 150-piece box keeps a working supply on hand without needing to count out individual screws.

Common Questions

Through-Panel Reach With a Clean, Flush Finish

When the joint calls for a screw that clears a full panel and seats its head without leaving a proud edge, this 2-1/2 inch Fastcap PowerHead is sized and equipped to do exactly that.