Best Plastic Socket Cap Screws in 2026

✔ Screw Head Style: Flat Head, Screw Drive Style: Internal Hex Drives, Known as Hex Socket Drives, Hex Size: 2.0 mm; Head Diameter: 5.8 mm; Thread Pitch: 0.5 mm; Thread Dia. : 3 mm

✔ Includes 5 Sizes Screws: M3 x 6, M3 x 8, M3 x 10, M3 x 12, M3 x 16

✔ Includes 1 Pcs Hex Key, Hex Size 2.0 mm, to Drives These Screws Easily

Wide Application:This M3 bolts and nuts assortment kit and m3 screws is great for professionals, amateurs, landlords, handymen, repair men, women, woodworking, construction, plumbing, HVAC and so on. These metric bolts and nuts assortment can be widely used in manual DIY production, robots, UAVs, aerial aircraft, 3D printing equipment, communication equipment, medical equipment, food machinery, petrochemical industry, marine power facilities, architecture and other fields .The M3 scr

High Quality: This M3 bolts and nuts assortment kit M3 screws hex head screws M3 nut M3 washer is made of high quality Alloy Steel,which features high strength and offers good corrosion resistance in bad environment like high temperature ,cold weather, and high humidity areas.And also these metric 3mm screw assortment kit anti oxidation,high toughness. They have superior rust resistance and the excellent , which can ensure use these m3 screws m3 nut and m3 washer black a long time,ver

Safety and Sweet:Our M3 bolts and nuts assortment kit m3 screws m3 nuts and m3 washer with high quality material, which is environmental protection and non-poisonous. In the process of using, these screws and nuts are no toxic substances releasing to ensure your safety. And we add an Allen Wrench on package to make working convenience for you when you are using these m3 nuts and bolts.

The flanged button head socket screws are 100% stainless steel 304 which offers a high level of chemical and corrosion resistance.

The low domed head with a wider bearing surface offer a finished appearance, making them an ideal choice when a neat appearance is desired.

Flange Diameter 13.6mm; Head Height 3.3mm; Thread Diameter 6mm; Thread Pitch: 1mm; Screw Length: 35mm (Head NOT Included).

Socket Cap Head Screws feature a socket for use with a Hex Key (also known as an Allen key).

All products within this range are manufactured in accordance with industry standards. Socket Head Cap Screws are manufactured using a high-precision machining process, allowing tolerances of ±0.25mm to be achieved.

All products within this range are fully threaded

◎ Flat head socket cap screws, socket drive, 10.9 grade alloy steel, black oxide finish

◎ Flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface

◎ Package quantity: 500pcs, Different size of M3 M4 M5. Internal hex drive has a hexagonal slot that turns using an Allen key driver

❋ [Multiple Sizes]: The kit includes M6 hex socket cap bolts, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, each for 10pcs; M6x12mm barrel nut for 70pcs and an Allen wrench. A nice assortment of sizes that help you match and find all the bolts and nuts you would want, and you don’t need to purchase an additional Allen wrench.

❋ [Reliable materials]: Our products are made by high-quality metal, anti-corrosive and anti-rust, it increase the service life of bolts and nuts; the black coating on the surface can resist oxidation and makes products shiny.

❋ [Humanized Design]: The bolts have clear threads and smooth surfaces without burrs, which makes installation and disassembly very convenient; and a properly designed Allen wrench also can save your time and energy.

This flanged button head socket cap screw is made out of steel with a black zinc finish.

The low domed head with a wider bearing surface offer a finished appearance, making them an ideal choice when a neat appearance is desired.

This bolt comes with a 0.66" diameter flange head and full thread length of 0.687" with a 3/16 allen hex drive. Thread size is 5/16-18.

👍Package Content:6Pcs Shoulder Screws.Shoulder Length:5/8".Shoulder Diameter:3/8".Thread Size:5/16"-18UNC.Total Size:35mmx14mm/1.38"x0.55" (L*D).

👍Alloy steel is one of the strongest materials used in fasteners, making this an ideal material to use when the primary concern is the application pulling apart.

👍Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads.

Female Thread Size: M8x20mm(D*L); Overall Height: 22.8mm / 0.9"; Sleeve Diameter: 10mm / 0.39"

Cap Size: 2.8 x 15.7mm / 0.11" x 0.62" (T*D); Hex Width(Fit for Wrench Size): 5mm / 0.2"

Material: Made of iron, nickel-plated to form a dense and stable oxide film, smooth, hard and durable.

【M6 Furniture Cap Bolt Kit】Includes 141 pcs 14 different sizes Hex Socket Cap Bolts (M6 x 16mm 20mm 25mm 30mm 35mm 40mm 45mm 50mm 55mm 60mm 65mm 70mm 75mm 80mm, each is 5pcs) + 70pcs Barrel Nuts + 1pc Hex Key. With multiple lengths available, you can choose the perfect size to meet different needs. Comes with a durable plastic case with size label for convenient storage.

【Strong and Rustproof Material】The furniture bolts and barrel nuts are made of premium carbon steel material with nickel plated, high hardness, smooth and burr-free. The rust preventative silver nickel finishes ensure their good performance even in wet environment, which also give them a slightly glossy appearance.

【Selected Custom Set】These furniture hardware features standardized metric thread on both the female threaded barrel nuts & the male threaded bolts, clean, accurate and neat. Once installed, they won’t easy to out of shape or slid in the process of rolling.

【M6 Furniture Cap Bolt Kit】Includes 85 pcs 7 different sizes Hex Socket Cap Bolts (M6 x 20mm 30mm 40mm, 50mm 60mm,70mm, 80mm each is 6pcs) + 70pcs Barrel Nuts + 1pc Hex Key. With multiple lengths available, you can choose the perfect size to meet different needs. Comes with a durable plastic case with size label for convenient storage.

【Strong and Rustproof Material】The furniture bolts and barrel nuts are made of premium carbon steel material with nickel plated, high hardness, smooth and burr-free. The rust preventative silver nickel finishes ensure their good performance even in wet environment, which also give them a slightly glossy appearance.

【Selected Custom Set】These furniture hardware features standardized metric thread on both the female threaded barrel nuts & the male threaded bolts, clean, accurate and neat. Once installed, they won’t easy to out of shape or slid in the process of rolling.

👍Package Content:6Pcs Shoulder Screws.Shoulder Length:1-1/2".Shoulder Diameter: 1/2".Thread Size: 3/8"-16.Total Size:62mm*18mm/2.44"*0.71"(L*D).

👍Alloy steel is one of the strongest materials used in fasteners, making this an ideal material to use when the primary concern is the application pulling apart.

👍Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads.

Thread Diameter 3 mm

Head Diameter 5.5 mm

Head Height 3 mm

This 1/4 20 flanged button head socket cap screw is made out of steel with a black zinc finish.

The low domed head with a wider bearing surface offer a finished appearance, making them an ideal choice when a neat appearance is desired in home improvement.

These black steel screws come with a 0.56" diameter flange head and full thread length of 0.5" with a 5/32 Allen hex drive. Thread size is 1/4-20.

Flat Head, Socket Drive, Stainless Steel

Flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface

Internal hex drive has a hexagonal slot that turns using an Allen key driver