80 mm Wood Screws | McMaster-Carr

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6 Products

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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	Pkg. Qty.		Pkg.
Zinc-Plated Steel







	M6 × 2.6 mm

	80	4	Partially Threaded	Thread Forming	25	97498A131	000000




			M8 × 3.6 mm

			80	5.5	Partially Threaded	Thread Forming	10	97498A145	0000




					M10 × 4.5 mm

					80	7	Partially Threaded	Thread Forming	10	97498A162	00000




							M12 × 5 mm

							80	8	Partially Threaded	Thread Forming	5	97498A176	0000




									M16 × 6 mm

									80	10	Partially Threaded	Thread Forming	1	97498A189	0000

Thread-Mount Studs for Wood

Also known as hanger bolts, use these studs to hang, mount, and fasten parts to wood structures. Install them with a stud driver, or create wrench flats by threading two nuts onto the stud and jamming them together.

316 Stainless Steel—Superior to 18-8 stainless steel, these studs won't degrade when exposed to harsh weather, salt water, and most chemicals.

	(A)		(B)
	Screw Size	Thread Lg., mm	Thread Size	Thread Lg., mm	Lg., mm	Tensile Strength, psi	Hardness	Pkg. Qty.		Pkg.
316 Stainless Steel



		M10	60	M10 × 1.5 mm	20	80	100,000	Rockwell C25	1	98828A320	00000