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The Würth #7 x 1-5/8" bugle head drywall screw is a W-type coarse-thread fastener designed for attaching gypsum board to wood framing. The 1-5/8" length is the most widely used size in residential and light-commercial drywall work, providing the thread embedment depth standard practice calls for when hanging 1/2" or 5/8" board to wood studs.
Length is the most consequential spec on a drywall screw, and 1-5/8" earns its place as the field default because it covers the two most common board thicknesses in one size. With 1/2" board, roughly an inch of thread bites into the stud. With 5/8" board, just over an inch of engagement remains. Either way, the screw is long enough to hold without over-penetrating into stud cavities where wiring or pipes may run. Framers and drywall crews carrying one box size through a full hang benefit from having this length handle both conditions without a mid-job swap.
The bugle head's concave underside transitions smoothly from the head face to the shank, distributing driving pressure so the screw dimples cleanly into the gypsum board face rather than tearing through the paper. That dimple is what compound is designed to fill. Coarse threading is correct for wood framing; the wider pitch pulls effectively through the fibrous structure of dimensional lumber and engineered studs. The black phosphate coating reduces thread friction during driving, which matters when a crew is pulling a trigger several hundred times a day. This screw is for dry, indoor framing. It is not rated for metal studs, treated lumber, or exterior exposure.
A box of 1000 is sized for the way drywall work actually runs: walls, ceilings, and repairs all consume screws quickly, and stopping to restock mid-board is the kind of friction that adds up across a project. This length suits new construction walls and ceilings, remodel hang-overs on existing wood framing, and patch work where 1/2" or 5/8" board is going back over wood. Cabinet and millwork shops also keep 1-5/8" coarse drywall screws on hand for temporary clamping, jig building, and fixture assembly where a quick, removable fastener in softwood or plywood is needed and appearance is not a concern.
Yes. Standard practice for 1/2" or 5/8" board on wood ceiling framing calls for a 1-5/8" screw, and this length meets that requirement. Space screws at 12" on-center for ceilings per most local code guidelines.
No. Coarse-thread screws are designed for wood framing. Metal stud work calls for fine-thread S-type drywall screws, which have a self-tapping point designed to cut threads in light-gauge steel.
Set the depth-sensitive nose on your drywall screw gun to dimple the head just below the board surface without breaking through the paper. A properly dimpled head leaves a small recess that joint compound fills cleanly. Over-driving tears the paper and reduces holding strength.
No. Black phosphate provides modest corrosion resistance suited to dry, interior conditions. It is not equivalent to zinc plating and should not be used in humid, wet, or exterior environments.
A rough field estimate for a standard 4x8 sheet on walls is 28 to 32 screws at 16" stud spacing with perimeter and field spacing following local code. Ceiling sheets typically require more. A box of 1000 covers a meaningful portion of a room without frequent restocking.
When the job calls for 1/2" or 5/8" gypsum board over wood framing, this is the screw: standard length, correct thread for wood, bugle head that seats cleanly, and a count that keeps the work moving.
Sold In: 1000 Each
