Chapter 7318 — Customs Tariff Headings

Black Oxide Finished Coach Screw M12 x 200mm

A metric coach screw with a square drive head and partial threading, designed for deep embedment in structural timber. The black oxide finish provides mild corrosion protection for indoor applications. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Coach Screw with Ribbed Neck 1 Inch x 12 Inch

A heavy structural coach screw with a serrated neck beneath the square head to resist pull-out in load-bearing timber joints. Made from hot-rolled carbon steel for maximum strength. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Galvanized Steel Coach Screw 1/2 Inch x 6 Inch

A large, square-headed screw with a coarse wood thread designed for heavy-duty fastening in timber construction. Made from galvanized steel for corrosion resistance. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Hot-Dipped Galvanized Coach Bolt 5/8 Inch x 8 Inch

A heavy-duty coach screw with a square shoulder under the head to prevent turning during installation in wood. Hot-dipped galvanized finish enhances durability for outdoor applications like decking and fencing. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Oiled Carbon Steel Coach Screw 9/16 Inch x 7 Inch

A plain oiled finish coach screw for temporary formwork and concrete shuttering applications. Coarse ACME thread profile for rapid installation and removal. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Sherardized Coach Screw 7/16 Inch x 5 Inch

A zinc-coated coach screw using the sherardizing process for superior corrosion protection in harsh environments. Square head design counters torque in dense hardwoods. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Stainless Steel 316 Coach Screw 3/4 Inch x 10 Inch

A corrosion-resistant coach screw made from AISI 316 stainless steel, ideal for marine timber applications like docks and piers. Features a square head and tapered point for easy wood penetration. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Type 304 Stainless Coach Screw M16 x 250mm

A metric stainless steel coach screw for architectural timber framing, with square head and washer face. Type 304 provides good atmospheric corrosion resistance. This product is classified under tariff item 7318.11.00 as a coach screw of iron or steel.

Bugle Head Drywall Wood Screws

Bugle head drywall wood screws are coarse-threaded steel fasteners with a countersinking bugle head, designed to attach drywall to wood studs without tearing the paper surface. Their specialized geometry and threading place them under tariff item 7318.12.00 as other wood screws.

Exterior Cedar Siding Screws

Exterior cedar siding screws are polymer-coated steel wood screws with a star drive and coarse threads, engineered to fasten cedar siding to framing in wet climates. Their corrosion-resistant coating and wood-specific threading qualify them as other wood screws under tariff item 7318.12.00.

Galvanized Steel Deck Wood Screws

Galvanized steel deck wood screws are coarse-threaded fasteners with a flat head and zinc galvanization, specifically made for securing wood boards to joists in outdoor decking. Their design and purpose as wood screws place them under tariff item 7318.12.00.

Mahogany Trim Screws

Mahogany trim screws are brass-plated steel wood screws with an oval head and coarse threads, designed for finish carpentry on tropical hardwoods like mahogany. Their decorative appearance and wood-specific threading make them other wood screws under tariff item 7318.12.00.

Oak Furniture Wood Screws

Oak furniture wood screws are fine-threaded steel screws with slotted heads, engineered for precise joinery in hardwoods like oak. Their design for wood assembly and steel composition classify them as other wood screws under tariff item 7318.12.00.

Phillips Flat Head Wood Screws

Phillips flat head wood screws are iron wood screws with a Phillips drive, flat head, and coarse threads, ideal for flush mounting in woodworking projects like cabinetry. Their wood-specific design places them under tariff item 7318.12.00 as other wood screws.

Pine Framing Wood Screws

Pine framing wood screws are structural steel screws with a washer head and patented thread, designed to replace nails in pine framing for building code compliance. Their high tensile steel and wood-specific design classify them as other wood screws under tariff item 7318.12.00.

Plywood Sheathing Screws

Plywood sheathing screws are ring shank wood screws with a bugle head and polymer coating, designed for attaching plywood sheathing to studs. Their engineered wood application and ring shank design place them under tariff item 7318.12.00 as other wood screws.

Pressure Treated Lumber Screws

Pressure treated lumber screws are double-barrier coated steel screws with coarse threads and hex heads, designed for ACQ-treated lumber in docks and playsets. Their chemical resistance and wood-specific design classify them as other wood screws under tariff item 7318.12.00.

Redwood Fence Wood Screws

Redwood fence wood screws are epoxy-coated steel screws with a star drive and aggressive thread, designed for vertical loads in redwood fences. Their UV-resistant coating and wood-specific threading make them other wood screws under tariff item 7318.12.00.

Spax T-Star Plus Wood Screws

Spax T-Star Plus wood screws are premium steel construction screws with a T-Star drive, serrated threads, and low-torque design for heavy timber framing. Their patented geometry and wood application classify them as other wood screws under tariff item 7318.12.00.

Square Drive Cedar Wood Screws

Square drive cedar wood screws are heavy-duty steel screws with square drive and extra-coarse threads, tailored for softwoods like cedar in fencing and pergolas. Their thread design maximizes bite in wood, placing them under tariff item 7318.12.00 as other wood screws.

Stainless Steel Trim Head Wood Screws

Stainless steel trim head wood screws are corrosion-resistant steel screws with a low-profile trim head and sharp coarse threads, designed for siding and exterior trim installation. Their stainless steel composition and wood-specific design classify them as other wood screws under tariff item 7318.12.00.

Teak Deck Boat Wood Screws

Teak deck boat wood screws are silicon bronze screws with a slotted flat head and coarse threads, designed for marine teak decking. Despite the bronze alloy, they are classified as steel-equivalent under the iron/steel chapter, but this item covers other wood screws of iron or steel, so they may not qualify.

Walnut Cabinetry Finish Screws

Walnut cabinetry finish screws are nickel-plated steel trim screws with tiny heads and a fine-coarse hybrid thread, designed for aesthetic installation in walnut cabinets. Their steel composition and wood-specific design classify them as other wood screws under tariff item 7318.12.00.

Awning Screw Ring

A stainless steel screw ring with a threaded shank, designed to be screwed into wood or other materials to provide an anchor point for awning support cables. Its marine-grade construction offers corrosion resistance for outdoor use, and its threaded design clearly classifies it as a screw ring under this tariff item.

Barn Door Screw Hook

An industrial steel screw hook with heavy lag threading, intended for use in barn door track systems. The hook's threaded shank and curved end are characteristic of screw hooks, and its rust-resistant coating makes it suitable for structural door hardware applications.

Brass Plated Screw Eye Hook

A brass-plated steel screw eye hook with a threaded point and an eyelet, used for picture hanging or light fixtures. Despite the brass plating, the base steel composition determines classification, and its threaded design qualifies it as a screw hook under this tariff item.

Cup Hook Screw

A small steel cup hook screw with a cupped hook end, designed for cabinetry and molding applications. Its threaded shank and hook shape are typical of screw hooks, and its precision sizing makes it suitable for woodworking projects.

Deck Screw Hook

A corrosion-resistant deck screw hook made of galvanized steel, designed for outdoor railing systems. The lag-style threading and curved hook make it a classic screw hook, and its weatherproof coating is suited for marine or exterior exposure.

Galvanized Steel Screw Hook

A galvanized steel screw hook with a threaded shank and curved hook end, intended for hanging lightweight items such as plants or decorations from wooden beams. The threaded design and steel construction place it squarely under this tariff item as a screw hook.

Heavy Duty Ceiling Screw Hook

A heavy-duty screw hook made of carbon steel, designed for ceiling installations supporting up to 50 lbs for hanging lights or swings. Its threaded shank and hook shape qualify it as a screw hook, and the carbon steel construction ensures strength and durability.

Lag Screw Hook

A lag screw hook of forged steel with large diameter threads, designed for heavy timber applications like tree swings. The forged construction and substantial threading make it a robust screw hook, and its steel composition aligns with this tariff item.

Picture Hanging Screw Hook Kit

An assorted set of small steel screw hooks for picture hanging, packaged in retail form with various sizes. The principal character of the set is the screw hooks, and the steel material ensures classification under this tariff item.

Plant Hanger Screw Hook

A decorative steel screw hook with a powder-coated finish, designed for hanging plants from eaves or porches. The lightweight threaded design and steel construction make it a consumer-grade screw hook, suitable for garden use.

Rope Rigging Screw Ring

A large galvanized screw ring for rope rigging on boats or fences, featuring heavy-duty threaded steel construction. The screw ring design and marine-grade build make it suitable for supporting synthetic or natural ropes.

Self-Drilling Screw Hook

A self-drilling screw hook with a hardened steel tip for metal surfaces, used in garage organization. The drill point does not change the principal threaded classification, and the steel construction qualifies it as a screw hook.

Stainless Steel Screw Ring

A stainless steel screw ring with a threaded base and circular ring, ideal for securing ropes or chains in marine or outdoor settings. The threaded steel article is a clear example of a screw ring under this tariff item.

Swag Screw Hook

A swag screw hook designed for hanging light fixtures from ceilings, featuring a steel threaded shank and broad hook. The screw hook design is common in electrical installations, and its steel construction supports chain or cord swagging.

Wall Mounted Screw Ring

A heavy steel screw ring for wall mounting gym equipment or heavy artwork, featuring a threaded anchor style. The high-strength construction and threaded design make it suitable for fitness applications, qualifying as a screw ring.

3.5mm Pan Head Stainless Self-Tapping Screw

3.5 mm pan head stainless steel self-tapping screw with a low-profile head, used in appliance manufacturing and electronics. Its self-tapping design and sub-6 mm diameter classify it under tariff item 7318.14.00.

4.2mm Hex Washer Head Self-Tapper

4.2 mm hex washer head self-tapper in stainless steel, featuring an integrated washer head for outdoor equipment assembly. Its self-tapping function and sub-6 mm diameter place it under tariff item 7318.14.00.

Chipboard Self-Tapping Screws #8 x 1/2"

Chipboard self-tapping screws, size #8 (4 mm diameter), with double-thread design and coarse lower threads for secure grip in particle board and MDF. These screws create their own mating threads upon installation, qualifying them as self-tapping screws under tariff item 7318.14.00.

Drywall Self-Tappers #6 x 1"

Drywall self-tapping screws, size #6 (3.5 mm diameter), with bugle heads designed for direct fastening into steel studs without pre-drilling. Their self-tapping nature and sub-6 mm diameter place them under tariff item 7318.14.00.

Hex Washer Head Self-Tappers #10

Hex washer head self-tapping screws, size #10 (4.8 mm diameter), combining a screw, washer, and hex drive in one piece. These are used in roofing and outdoor metal applications, and their self-tapping feature with a diameter under 6 mm classifies them under tariff item 7318.14.00.

M3 Self-Tapping Steel Screws

M3 self-tapping steel screws with a 3 mm thread diameter, made of iron or steel, designed to create their own threads in pre-drilled holes. Their small diameter and self-tapping function place them under tariff item 7318.14.00.

M3 Stainless Steel Self-Tapping Screw

M3 stainless steel self-tapping screw with a 3 mm shank diameter, used for fastening thin metal or plastic sheets in electronics enclosures. It cuts its own threads upon installation, fitting under tariff item 7318.14.00.

No. 6 Sheet Metal Self-Tappers

No. 6 sheet metal self-tappers with approximately 3.5 mm diameter shanks, specifically for fastening sheet metal panels without pre-drilling. Their self-tapping design and sub-6 mm size classify them under tariff item 7318.14.00.

Pan Head Self-Tapping Screws M4

Pan head self-tapping screws, M4 (4 mm diameter), in zinc-plated steel for general metal-to-metal fastening. Their self-tapping nature and diameter under 6 mm place them under tariff item 7318.14.00.

Phillips #4 Self-Tapping Machine Screws

Phillips #4 self-tapping machine screws, about 2.8 mm diameter, with Phillips drive, used in plastic housings and thin metals. Their self-threading capability and sub-6 mm size classify them under tariff item 7318.14.00.

Phillips #4 Stainless Self-Tapper

Phillips #4 stainless self-tapper with approximately 4.8 mm shank diameter and Phillips drive, ideal for woodworking and light metal fabrication. Its self-tapping nature and sub-6 mm size classify it under tariff item 7318.14.00.

Plastic Fastening Self-Tappers #4

Plastic fastening self-tappers, size #4 (2.8 mm diameter), with fine threads optimized for thermoplastics to avoid cracking. These self-tapping screws are under 6 mm and fall under tariff item 7318.14.00.

Security Torx Self-Tapping Screws 3.5mm

Security Torx self-tapping screws, 3.5 mm diameter, with pin-Torx drive to prevent tampering in public fixtures. Their self-threading design and sub-6 mm size classify them under tariff item 7318.14.00.

SS304 #6 x 1/2" Self-Piercing Screw

SS304 #6 x 1/2" self-piercing screw, 3.5 mm diameter, used for auto trim panels, drilling through metal without a pilot hole. This self-tapping screw in stainless steel falls under tariff item 7318.14.00.

Torx T10 Self-Tapping Screws 4.2mm

Torx T10 self-tapping screws, 4.2 mm diameter, featuring a Torx T10 drive for high-torque applications in automotive interiors. Their self-tapping nature and sub-6 mm diameter place them under tariff item 7318.14.00.

12.9 Alloy Steel Hex Bolt M16 with Heavy Hex Nut and Hardened Washer

A metric class 12.9 alloy steel heavy hex bolt with matching heavy hex nut and hardened flat washer, designed for high-stress applications such as heavy machinery and structural connections. The set is shipped together and falls under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.

1/4-20 UNC Grade 5 Bolt Nut Washer Kit

An imperial-sized Grade 5 zinc-plated steel bolt with nut and washer, packaged as a matched set for structural applications. This product is classified under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.

Carriage Bolt with Square Neck, Nut, and Flat Washer

A galvanized steel carriage bolt with a square neck to prevent spinning, complete with nut and washer for woodworking applications. This product falls under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.

Eye Bolt with Shoulder, Nut, and Forged Washer

A forged steel shoulder eye bolt for lifting applications, including a nut and forged ring washer, shipped as an assembly. This product is classified under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.

Flange Bolt with Integrated Serrated Flange and Nut

A hex flange bolt with a serrated washer face and matching flange nut, shipped as a pair for automotive use. This product falls under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.

Grade 8 Hex Bolt M12 with Lock Nut and Split Lock Washer

A high-strength Grade 8 yellow zinc plated M12 hex bolt with prevailing torque lock nut and spring washer for vibration resistance, shipped as a set. This product is classified under tariff item 7318.15.00 as other screws and bolts of iron or steel, whether or not with their nuts or washers.