Best Plastic Socket Cap Screws in 2026

The socket head cap screws are 100% stainless steel 304 (A2-70) which offers a high level of chemical and corrosion resistance.

Thread Diameter: 6mm; Thread Length: 25mm; Total Length: 31mm; Pitch Size: 1.0mm.

Head Diameter: 10mm; Head Height: 6mm; Drive Type: Allen Hex Socket 5mm; Color: Silver Tone.

Made of high quality stainless steel 304.

Head Diameter 9.5mm; Head Height 2.75mm; Allen Hex Drive 3mm.

System of Measurement: Metric; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Screw Length: 8mm.

Head Type: Button | Size: M3 M4 M5 | Finish: Black Oxide| Material: 10.9 grade alloy steel| Drive Type: Internal Hex| Quantity: 570pcs

Various Head Dia. & Length. Includes M3 M4 M5(head dia.) in length of 6mm/8mm/10mm/12mm/16mm/20mm.

These metric bolts are made from alloy steel heat treated to provide a good balance of hardness and toughness, black oxided increase their corrosion resistance.

SIZE: M2 x 4mm/6mm/8mm/12mm/16mm/20mm, M3 x 4mm/8mm/12mm/16mm/20 mm/30mm, M4 x 6mm/10mm/14mm/18mm/20mm/30mm screws with matching nuts and flat washers, a must have to get job done! job.

These metric socket head cap screws bolts nuts are made of 12.9 Grade alloy steel, features superior rust resistance and excellent oxidation resistance.

Come in organized, 1080pcs/18 sizes metric screws bolts. All screws nuts washers are packed in a sturdy convenient case for daily storage.

Standard Metric: Our M2 M3 M4 M5 screws and nuts accord with standardized metric system. And the average error is less than 0.01mm.

High Quality: The kit is made of high quality 304 stainless steel, which features is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas.

Broad Application:M2 M3 M4 M5 Hex Socket Head Screws Washers and Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY .

High Quality 240pcs Metric M3 Hex Drive Rounded Head Screws and Hex Nuts Assortment Kit.

Screw thread: M3/(3mm) with thread pitch: 0.5mm;Fully Threaded

M3 different length:6MM,8MM,10MM,12MM,14MM,16MM,18MM,20MM,25MM;Length is measured from under the head

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.

(m3 cap head screws)Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.

(m3X 6mm screws)Metric screws are also known as A2 stainless steel screws.

(Long 6mm bolt)Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.

√ High quality 304 stainless steel hex socket head cap screws bolts nuts flat washers kit. We also provide three free relevant wrenchs in our sets.

√ Nuts and flat washers expand the contact area and reduce the pressure in order to protect the screws and parts.

√ Many various sizes of M3 M4 M5 screws (Drive Type: Hex Socket; Head Style: Button Head)with matching nuts and flat washers meet different people’s demands, the necessity of your home life.Package quantity: 900Pcs.Everything is very organized and decent in a sturdy convenient case, can be use for a storage box, is organized to you, very easy to open and close.

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

Head Type: socket; Thread Diameter: 5mm; Thread Pitch: 0.7mm; Drive Type: internal allen hex; Driver wrench: 3mm; UNC Full Thread

Screw Length 8mm to 30mm: this cap screws kit include sizes M4 x 8/10/12/20/25/30/35/40mm socket head screws bolts with matching washers and nuts.

Quantity: the metric M4 screws kit contains 8 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 365pcs

High Quality 240pcs Metric M2.5 Hex Drive Rounded Head Screws and Hex Nuts Assortment Kit

Screw thread: M2.5/(2.5mm) with thread pitch: 0.45mm;Fully Threaded

M2.5 different length:4MM,6MM,8MM,10MM,12MM,16MM,18MM,20MM,25MM;Length is measured from under the head

M8 Specification : Pitch 1.25 mm. Thread Diameter 8 mm; Length: 20mm/25mm/30mm/35mm/40mm. Drive Wrench: 5mm

M6 Specification : Pitch 1.0 mm. Thread Diameter 6 mm; Length: 16mm/20mm/25mm/30mm/40mm; Drive Wrench: 4mm

Great Performance: 10.9 grade alloy steel, which features high hardness, good wear resistance, good leak-proof effect, with good fatigue resistance for long time use.

⏩【QUALITY & DURABLE】The black surface M6 hex drive socket cap bolts kit prevents it from rustiness, corrosion and oxidation. Black Zinc surface has the performance of wear-resistance, high hardness and good toughness.

⏩ Drive Type: Hex Socket; Head Style: Round Head; Fit hex type: 4mm; Bolts Sizes(16-80mm): M6 x 16/20/25/30/35/40/45/50/55/60/65/70/75/80mm; M6 nuts 【Metric, please See Picture 2 for Specific Dimensional Size】

⏩【WELL MADE BED SCREW】 Hex socket head crib bolts ensures stability, and will not easy to skid. Nuts will connect with the bolts correctly, and is less likely to cam out. Without burrs, these crib screws has clear threads and easy to screw in.

Quality Material: set screw kit made of 304 stainless steel, excellent rust resistance and corrosion resistance, free from burrs, won’t slip out easily.

Sizes Included: M3*3mm, M3*4mm, M3*10mm, M4*4mm, M4*6mm, M4*8mm, M5*5mm, M5*8mm, M5*10mm, M6*6mm, M6*10mm, M8*8mm, M8*12mm.

Wide Applications: Suitable for door handles, faucet, light fixture, knobs, armament repair, plumber and other small repairs around the shop, garage or home.

High Quality Hex Socket Head Cap Screw Assortment Kit

135pcs metric different size with different length 304 stainless steel Hex Socket Head Cap Screw

different size :M2.5 M3 M4 M5 M6 M8;different length:8MM~25MM

Head Type: Button; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Drive Type: internal allen hex; Driver wrench: 3mm; UNC Full Thread

Screw Length 10mm to 35mm: this cap screws kit include sizes M5 x 10/12/16/25/30/35mm button head screws bolts with matching washers and nuts.

Quantity: the metric M5 screws kit contains 6 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 328pcs

Head Type: socket; Thread Diameter: 5mm; Thread Pitch: 0.8mm; Drive Type: internal allen hex; Driver wrench: 4mm; UNC Full Thread

Screw Length 8mm to 30mm: this cap screws kit include sizes M5 x 8/10/12/20/25/30mm socket head screws bolts with matching washers and nuts.

Quantity: the metric M5 screws kit contains 6 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 328pcs

Made of 12.9-grade carbon steel, the highest metric class for strength. 12.9 screw bolt is one of the highest grades of bolts produced. The surface is plated with black zinc which provides longer service life. They are built with hex heads.

The screw assortment set included hex socket screw bolts and nuts. Nuts and bolts are the most important companions to hold our mechanical devices together. The screws set has 140Pcs M3 screw bolts, 140Pcs screw nuts and 2Pcs hex keys. The bolts sizes is 4mm/ 5mm / 6mm/ 8mm/ 10mm/ 12mm/ 16mm/ 18mm/ 20mm.

It has a wide range of uses due to its versatility, raised dome head, and durability. Ranging from manufacturing applications to household repair. Such as plumbing works, industrial machinery, construction, automotive, marine, bicycle, 3D printer components and DIY projects, etc. Great for workers, repairmen and DIY hobbyists.

Premium Material: All socket hex head screws are made of superior stainless steel material, which has excellent rust, oxidation and corrosion resistance properties, not easy to break, and ensures long service life.

Easy to Use: The socket head cap screws are ideal for use in tight areas where the head needs to be flush or below the surface. The mixed grub screws have uniform force, no offset, and are not easy to slip. With the even pitch, no sharp edges, obvious screw thread, no residual burrs, the set screw threads can get a good grip.

Easy to Store: All the socket head cap screws are packed in a sturdy transparent storage box organizer, which can offer you not only the hih-quality socket head cap screws, but also a good storage system for them.

Material: 304 stainless steel

Specification: Metric thread M6

5 types of lengths: 80mm/3.15inch, 70mm/2.75inch, 60mm/2.36inch, 50mm/1.96inch, 40mm/1.57inch.

【Sizes】M3 x 8mm/12mm/16mm/20 mm, M4 x 8mm/12mm/16mm/20mm, M5 x 8mm/12mm/16mm/20mm, M6 x 8mm/12mm/16mm/20 mm, screws with matching hex nuts and flat washers, different sizes can meet your different needs.

【Material】304 Stainless Steel, stainless steel material which have good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and excellent oxidation resistance, which can ensure long time using.

【Package】810 pieces in total, packed in a durable transparent box with label. It is easy to distinguish the size of the product, when you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs.

【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.

Metric 12.9 Alloy Allen Socket Head Cap Screw Assortment - 453 PCS

Black Oxide Finish

Heavy Duty Locking Steel 24 Hole Compartment Tray (Dim: 13-3/8" Width x 2" Height x 9-1/4" Depth)

M3 Flat Head Socket cap screws,M3 hex nuts,M3 lock nuts,M3 falt washers,M3 lock washers,metric

Kit contains:M3x4 mm,M3x6 mm,M3x8 mm,M3x12mm,M3x16mm,M3x20mm

Package Quantity: 150 piece, Material: Stainless Steel

M2 Hex socket Head cap screws,metric

Kit contains:M2x4 mm,M2x6 mm,M2x8 mm,M2x10 mm,M2x12 mm,M2x16 mm

Package Quantity: 180 piece, Material: SCM435/440 Alloy Steel

PACKAGE INCLUDED: M6 x 20mm(10PCS), M6 x 25mm(10PCS), M6 x 30mm(10PCS), M6 x 35mm(10PCS), M6 x 40mm(10PCS)

High quality: It is made of high quality 10.9 grade alloy steel, and the surface is treated with black oxide. They have excellent corrosion resistance, firmness, wear resistance and low temperature resistance.

THE WIDE APPLICATIONS:Suitable for maintenance, fastening, and home repair of furniture in various fields, such as doors, windows, cribs, tables, benches, etc. It is also suitable for other electronic products, mechanical products, digital products, and electrical equipment