18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. Also known as lag bolts, they have a hex head for a secure grip with a wrench. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. They may be mildly magnetic. Length is measured from under the head.

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More corrosion resistant than 18-8 stainless steel screws, these have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. Also known as lag bolts, they have a hex head for a secure grip with a wrench. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. They may be mildly magnetic. Length is measured from under the head.

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These screws speed installation by drilling, tapping, and fastening wood and metal in a single operation. Length is measured from the top of the head.

Screws with cutting wings drill a slightly larger hole in the wood to allow for expansion. The wings break off when they contact metal, so the screw can tap the remainder of the hole.

Zinc-plated steel screws resist corrosion in wet environments.

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Thread-forming screws press threads into drilled holes for a tight vibration-resistant assembly. All are beveled under the head for use in countersunk holes. A Torx drive allows you to apply extra force with less slippage or damage to the recess. They're black-phosphate steel to resist corrosion in dry environments. Length is measured from the top of the head.

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Also known as Type 17 auger point screws, these penetrate hardwood and reduce driving torque. They require a pilot hole to prevent splitting when used near an edge. They're beveled under the head for use in countersunk holes. Ribs underneath the head prevent loosening. Made from 18-8 stainless steel, they have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. Screws may be mildly magnetic. Length is measured from the top of the head.

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These steel screws are zinc plated to resist corrosion in wet environments. They are beveled under the head for use in countersunk holes. They penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Length is measured from the top of the head.

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18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They have a curved neck that sinks into material, so they sit flush with the surface. Also known as deck screws, they have a Type 17 auger point that penetrates softwood and plastic-wood composite decking material. They may be mildly magnetic. Length is measured from the top of the head.

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More corrosion resistant than 18-8 stainless steel screws, these have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. They have a curved neck that sinks into material, so they sit flush with the surface. Also known as deck screws, they have a Type 17 auger point that penetrates softwood and plastic-wood composite decking material. They may be mildly magnetic. Length is measured from the top of the head.

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A curved neck sinks into material, so these screws sit flush with the surface. Also known as deck screws, they have a sharp point and narrow body to penetrate softwood and plastic-wood composite decking material. They're made from hardened steel and have a ultra-corrosion-resistant coating that resists at least 500 hours of salt spray. Length is measured from the top of the head.

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18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. The Type 17 auger point and narrow body penetrate softwood and plastic-wood composite decking material. They cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Screws may be mildly magnetic. Length is measured from the top of the head.

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These steel screws have an ultra-corrosion-resistant coating to resist corrosion in wet environments. Also known as trim-head deck screws, they have a small flat head and slender shank to reduce the risk of splitting. The Type 17 auger point and narrow body penetrate softwood and plastic-wood composite decking material. They cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Length is measured from the top of the head.

For technical drawings and 3-D models, click on a part number.

Drive these into wood with an adjustable wrench, pliers, or a special driver bit (sold separately). Zinc yellow-chromate plating provides corrosion resistance in wet environments and meets ASTM B633 specifications for quality. Dimensions meet ASME B18.2.1 specifications.

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

Black-oxide steel studs are mildly corrosion resistant in dry environments.

Zinc-plated steel studs resist corrosion in wet environments.

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18-8 stainless steel studs have good chemical resistance and may be mildly magnetic. Also known as hanger bolts, use them to hang, mount, and fasten parts to wood structures. Install with a stud driver or create wrench flats by threading two nuts onto the stud and jamming them together.

For technical drawings and 3-D models, click on a part number.