30 mm Wood Screws | McMaster-Carr

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Dowel Pins

Wood Screws

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8 Products

Steel Hex Head Wood Screws

Often used on posts and beams, the coarse threads on these screws dig in for a firm hold. The hex head's six contact points keep sockets in place to avoid slipping and stripping the drive. To tighten, use a wrench or six-point hex socket. Also known as lag bolts.

Drill a pilot hole slightly smaller than the screw to prevent splitting. Length is measured from under the head.

Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.

	Tapping Method	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	M5 × 2.2 mm

	30	3.5	Partially Threaded	Thread Forming	DIN 571	100	97498A113	000000




			M6 × 2.6 mm

			30	4	Partially Threaded	Thread Forming	DIN 571	50	97498A122	00000




					M8 × 3.6 mm

					30	5.5	Partially Threaded	Thread Forming	DIN 571	25	97498A136	0000




							M10 × 4.5 mm

							30	7	Partially Threaded	Thread Forming	DIN 571	10	97498A153	0000

Wood Dowel Pins

The choice for joining wood components, these pins won’t scratch or damage surfaces. They expand for a tight fit when glued.

Wood

	Pkg.
Wood







	5 mm Diameter

	30	100	97195A132	00000




			6 mm Diameter

			30	100	97195A136	0000




					8 mm Diameter

					30	100	97195A140	0000




							10 mm Diameter

							30	100	97195A147	0000