Best Metric Hardware Nuts in 2026

1pc 6 Spline Lug Nut Socket Key Replacement. ONLY compatible with 6-point Spline Type Tuner Locking Lug Nuts with smaller diameter (M12, M12x1.5, 12x1.25, 1/2", 1/2"x20 Thread Pitch). NOT compatible with larger spline lug nuts such as ones for Truck/SUV. Also NOT compatible with spike lugnuts.

Inner Diameter: 17.6mm (0.69"). Outer Diameter: 20.5mm (0.81"). Total Length: 90mm (3.5"). Depth: 62mm (2.4"). This key works with the following socket sizes: 19mm, 3/4", 21mm, 13/16".

[Quality] Special coating provides exceptional appearance and corrosion resistance. Manufactured from cold forged steel that can withstand much more force than the torque needed to secure the nuts on your vehicle.

This t-nut is made out of 1010 steel with a black zinc finish and is compatible with our 10 Series extruded aluminum profiles or 1.0" based t slot aluminum extrusion.

Used with a 1/4-20 bolt to mount joining plates, brackets, or other t-track accessories. Works great for our 1010, 1020, 1050, 2020, and many 1.0" based extrusions.

This t-nut measures .443 x .124 x 1 inch long and works great as mainstay piece of your home improvement arsenal. Works with many other competitor's extruded profiles.

☆PERFECT REPLACEMENT - Replacement for 1995-2019 Silverado 1500, 2500, 3500 /1995-2019 Chevy Suburban 1500 Tahoe / 2015-2017 Ford Expedition, F-150 / 2003-2016 F-250, F-350 8 lugs. It also works for 5 lugs and 6 lugs, a few more as a spare is also a good choice.

☆SPECIFICATION - M14 x 1.5 Thread pitch, Overall tall 4.4", Diameter 0.9", extended, Spiked, Bulge Acorn, Closed End, 60 Degree cone/conical seat, 1 Socket key for installation 3/4".

☆ON-VEHICLE TESTING - One-piece design compared with other two-piece design, Anti-cracking off and make it aesthetically pleasing while ensuring safe driving. Our products have undergone extensive on-vehicle testing to ensure proper fit and long-lasting performance before selling them.

【Quality and Safety Assurance】The KSP 6x139.7 wheel spacers are REAL FORGED from Lightweight Anodized Black 6061-T6 Aluminum, is more heavy duty, durable and corrosion resistance. And they are specifically designed by in-house engineers and CNC machined to exact standards,ensuring the best fitment possible. Heat treated and hardened 10.9 grade geomet bolts, not easy to break off and strip. Be carefully measuring the OEM wheel hubs and bore dimensions, these 106mm hubcentirc spacers mount with minimal clearance to prevent any vibration, retaining the stock driving.

【Improve】There may be not enough threads for the lug nuts to fit wheel spacers, especially for Tacoma and FJ. If he open lug nuts that came with the package can not engaged enough thread, please choose the ET lug nuts (B07DLX519N).

【Specs】4PCS 1.25" (32mm) Thickness | 6x5.5” Vehicle Bolt Pattern | 6x5.5” Wheel bolt pattern | 106mm Center Bore with lip | 12-1.5mm Threaded Studs/Nuts. Recommended torque: 72-80 FT/LBS. We laser engrave the sizing and part number info for an easy identification and individuation. NOTE: The spacer will not fit the front wheels with locking hub, such as some years Land Cruiser, Pickup etc.

✅Features -- Butterfly wing nuts is made of high quality stainless steel, corrosion resistant, strong and durable. Thread is better for brittle material, ensure a long lasting hold.

✅Dimension -- Square wing nut inner diameter: M12:12mm/0.47", M10:10mm/0.39", M8:8mm/0.31", M6:6mm/0.23", M5:5mm/0.19", M4:4mm/0.15", M3:3mm/0.11". Metric Measurement!

✅Easy to Use -- Features two stainless steel butterfly shape wings, one on each side , easy twist the nut by hand without any other tools.

Practical: Use the ABN 1/2” Inch Impact Drive 19mm Lug Nut Socket – Non-Marring, Color-Coded, Laser-Etched, Thin-Walled Wheel Rim Protector to remove bolts on a vehicle’s wheels as the protective sleeve prevents damage on custom rims and lug nuts

Safe: 360° non-scratch sleeve and insert protect bolt tops, wheel rims, and lug nuts from scratches during use

Versatile: Perfect for both factory and aftermarket painted, clear coated, chrome, and other wheels/bolts; Fits all 1/2-inch drive socket hand wrenches, electric, or air tools; Fits most vehicles with 19mm wheel bolts; Hollow design allows room for removing longer bolts

2pc 7 Spline Lug Nut Socket Key Replacement. Compatible with 7-sided Spline Type Tuner Locking Lug Nuts. Typically 14x1.5, 14x2, 9/16x18, 1/2"x20 Threads. Works with Multiple Hex Socket Sizes: 19mm, 3/4", 21mm, 13/16".

[Quality] Special coating provides exceptional appearance and corrosion resistance. Manufactured from cold forged steel that can withstand much more force than the torque needed to secure the nuts on your vehicle.

[Verify Nut Diameter] There are different diameter spline lug nuts on the market. Ensure that the diameter of your 7-Spline lug nut is smaller than 20mm.

☛【304 Stainless Flange Nuts Assortment Kit】: The nuts are made of high-quality 304 stainless steel, corrosion and rust resistant, suitable for humid environment.

☛ 【Hardware Nuts Package】：The Package Contains 7 Sizes, Included: M3 M4 M5 M6 M8 M10 M12

☛【Widely Application】: There is a wide flange at one end of the flange nut, which increases the bearing surface of the nut and is not easy to loosen. It can be used to replace the hex nut and shock-proof washer. It is widely used in automobiles, motorcycles, generators, home appliances and other projects.

Square nuts are made of 304 stainless steel,more durable,non-toxic and corrosion resistant.

Feature: Easy to install and remove, can be used repeatedly.

The square nuts of different sizes, designed to highlight the material and facilitate welding penetration, are widely used in industrial machinery.

IMPORTANT: NOT OEM LENGTH. This is an extended length lug bolt, NOT an OEM replacement lug bolt. NOT to be used without wheel spacers. The correct length will depend on your OEM bolt's length and the spacer's thickness. See Diagram for Measuring Help. MEASURE BEFORE PURCHASING. Installing bolts that are too short can cause them to fall out while driving. Installing bolts that are too long may damage brake components.

WARNING: VERIFY VEHICLE LUG BOLT SIZE, SEAT AND THREADS. Check your vehicle's bolt thread size, as various years/models come with different size bolts. These are Ball Seat R12 shaped bolts. Make sure your wheels bolt seat have this seat type. See Diagram for Help. During Installation, ensure that your bolts get 5-8 full turns before tightening.

[SPECIFICATIONS] Pack of 20 - Black Bolts | Thread Size: 14x1.5 | Seat Type: Ball Seat R12 | Shank Length: 37mm (ie thread length).

Flange Nuts are fasteners that look like a standard hex nut but the bottom has a widened circular flange or skirt that acts as a built-in washer and distributes the holding power of the nut evenly across the surface for a more secure fastening solution. These types of nuts are designed to remove the deficiencies commonly associated with the use of washers.

The serrations on the nut are meant to dig into the surface of the work to create a more secure connection that resists loosening which also makes it a popular choice with electronics fasteners as they are less prone to damaging fragile, soft metal surfaces as compared to a traditional nut.

M8 - M12 Diameter JIS (Japanese Industrial Standard) Flange nuts have smaller hex sizes than ISO and ANSI type bolts and are commonly used for import cars, auto repair, truck, car, and motorcycle frames, vehicle engines, transmission and exhaust. They are also mostly used for automotive and fastening applications such as steering and suspension parts, cylinder, and flywheels, and also for high strength mechanical applications and forged parts.

Flange Nuts are fasteners that look like a standard hex nut but the bottom has a widened circular flange or skirt that acts as a built-in washer and distributes the holding power of the nut evenly across the surface for a more secure fastening solution. These types of nuts are designed to remove the deficiencies commonly associated with the use of washers.

The serrations on the nut are meant to dig into the surface of the work to create a more secure connection that resists loosening which also makes it a popular choice with electronics fasteners as they are less prone to damaging fragile, soft metal surfaces as compared to a traditional nut.

M8 - M12 Diameter JIS (Japanese Industrial Standard) Flange nuts have smaller hex sizes than ISO and ANSI type bolts and are commonly used for import cars, auto repair, truck, car, and motorcycle frames, vehicle engines, transmission and exhaust. They are also mostly used for automotive and fastening applications such as steering and suspension parts, cylinder, and flywheels, and also for high strength mechanical applications and forged parts.

Seat Style Cone Seat Nut; Thread Size 9/16-18; Overall Length 2.50; Hex Size 7/8; Includes 8 Lug Nuts

The larger key hex, 2.5″ overall length and wider outside diameter of our Duplex lug nuts are necessary in some truck & van applications. As a general rule, most 8 lug wheels require Duplex lug nuts

McGard’s plating process includes several layers of nickel and one layer of microporous chrome producing a superior finish while protecting against rust. Every lock is through-hardened and tempered. Manufactured in the USA to meet or exceed OEM standards.

16-piece Set: 16 different keys to fit a wide variety of stock and after-market wheel lock nuts. 8 Spline Sizes (12 spline 13/16, 12 spline 11/16, 7 spline 3/4, 7 spline 5/8, 7 spline 11/16, 6 spline 41/64, 6 spline 45/64, 5 spline 5/8) | 4 Star Lug (10-point 1/2, 8 point 5/8, 8 point 7/16, 9 point 1/2) | 4 High Tech Hex Lug (15mm, 9/16, 12mm, Fluted 12mm)

High Quality & Durability: Heavy duty construction with heat treated Chrome Molybdenum Steel (CR-MO) and a black oxide finish to ensure longevity, durability, and prevent nicks and scratches while removing your wheels and tires.

Versatile Kit : Comes with standard (SAE) and metric (MM) pieces that can be used on spline, star, hex, and fluted hex fasteners. Thin and long Lug Nut Keys allow perfect fitment while protecting your tuner wheels.

Contents: One hundred (100) Yellow CPY22MM CheckPoint 22mm wheel lug nut movement and heat indicators.

Application: Mainly for commercial vehicles such as trucks, agricultural vehicles, dangerous goods transporters, etc. It is also used in the industrial sector, and wherever safety critical fasteners can loosen due to heavy vibrations.

Benefits: Improves the safety of nut fittings. Enables quick and easy visual checks and monitoring. Reduces maintenance costs by saving time and money.

Fully configured:The kit contains 50 wing nuts in sufficient quantity for immediate use and replacement.

Material excellence:A2 70 stainless steel manufacturing,high tensile strength,corrosion resistance,hard and durable,product standard for DIN 315,thread standard,accurate size,strong compatibility.

Small size:These wing nuts are small in size,delicate in appearance and practical.

Contents: One hundred (100) Yellow CPY21MM CheckPoint 21mm wheel lug nut movement and heat indicators.

Application: Mainly for commercial vehicles such as trucks, agricultural vehicles, dangerous goods transporters, etc. It is also used in the industrial sector, and wherever safety critical fasteners can loosen due to heavy vibrations.

Benefits: Improves the safety of nut fittings. Enables quick and easy visual checks and monitoring. Reduces maintenance costs by saving time and money.

Contents: One hundred (100) Red CPTR21MM CheckPoint 21mm wheel lug nut movement and heat indicators.

Application: Mainly for commercial vehicles such as trucks, agricultural vehicles, dangerous goods transporters, etc. It is also used in the industrial sector, and wherever safety critical fasteners can loosen due to heavy vibrations.

Benefits: Improves the safety of nut fittings. Enables quick and easy visual checks and monitoring. Reduces maintenance costs by saving time and money.

Contents: One hundred (100) Red CPTR233MM CheckPoint 33mm wheel lug nut movement and heat indicators.

Application: Mainly for commercial vehicles such as trucks, agricultural vehicles, dangerous goods transporters, etc. It is also used in the industrial sector, and wherever safety critical fasteners can loosen due to heavy vibrations.

Benefits: Improves the safety of nut fittings. Enables quick and easy visual checks and monitoring. Reduces maintenance costs by saving time and money.

Contents: One hundred (100) Red CPTR22MM CheckPoint 22mm wheel lug nut movement and heat indicators.

Application: Mainly for commercial vehicles such as trucks, agricultural vehicles, dangerous goods transporters, etc. It is also used in the industrial sector, and wherever safety critical fasteners can loosen due to heavy vibrations.

Benefits: Improves the safety of nut fittings. Enables quick and easy visual checks and monitoring. Reduces maintenance costs by saving time and money.