Best Stainless Steel Socket Head Screws in 2026

Standard: ISO7380; Thread Type: Full Thread, Coarse Thread UNC

Thread Size: 10mm; Thread Pitch: 1.5mm; Thread Length: 50mm

Package: 10 PCS; Hex Drive Size: 6mm

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.

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.

Type: Socket Head Cap screws

Grade:Class 12.9

Material:Alloy Steel

Hardness of 10.9, very durable hardness, not easy to damage

The surface is plated with anti-rust coating to prevent rust damage.

It is very common for household items to be fixed in by this size

★ High Quality Hex Socket Flat Head Countersunk Bolts Screw Nuts Kit

★ Drive Type: Hex Socket; Head Style: Flat Head

★ Material: High Quality 10.9 Grade Alloy Steel; Different Size: M4 M5 M6

【Sizes】M2/M3/M4/M5 (8/12/16/20 mm) screw bolts nuts flat washers, different sizes can meet your different needs.

【Material】Made of high quality 12.9 grade alloy steel, high hardness, no deformation, anti-oxidation, corrosion resistance.

【Package】1280 pieces in total, packed in a durable transparent box with label. It is easy to distinguish the size of the product, you can choose the suitable one to meet all your needs.

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

Made of 100% Grade 10.9 Alloy Steel which offers a high level of chemical and corrosion resistance.

The low profile of the socket button head makes a very clean looking, and offers a much larger contact surface.

Thread Diameter: 3/8"; Head Diameter 0.656"; Head Height 0.199"; Screw Length 3/4"; Thread Count: 16; Allen Hex Drive 7/32".

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.

✔ High Quality Alloy Steel Hex Socket Head Cap Screws Nuts Kit.

✔ Different Size of M3 M4 M5.

✔ Package Quantity: 500pcs, with Plastic Clear Box.

Note: this screw assortment kit is metric which includes M2 M3 M4 M5, PLEASE CONFIRM THE SIZE before you purchase

【Quantities】--- the kit includes M2x8mm/12mm/16mm/20mm, M3x8mm/12mm/16mm/20mm, M4x8mm/12mm/16mm/20mm, M5x8mm/12mm/16mm/20mm screws with matching nuts and washers; total is 1225pcs；

【Handy Box】--- This set is organized by size in a durable and sturdy case, which is easy to get the bolts you need and convenient to put off your tiny parts

EXCELLENT MATERIAL: Made of 12.9 class alloy steel, these internal hex drive cup-point set screws, has excellent corrosion resistance property, and won’t slip out easily.

VARIETY OF SIZES: Including metric sizes of M2.5*4mm, M2.5*5mm, 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; 20pcs for each size, total is 300pcs.

WITH HANDY BOX: All grub screws and wrenches are packed in a convenient transparent storage box, with clear size lable on it, easy to install and access.

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

Product Name: Countersunk Bolts;Material: 12.9 Alloy Steel

Thread Dia: 2.5mm / M2.5; Thread Length: 5mm / 0.2"; Head Dia: 4.7mm / 0.19"

Fit Hex Key Size: 2mm;Head Type: Pan Head

👍Package Content:6Pcs Shoulder Bolts.Thread Type: UNC.Screw Thread:#10-24.Shoulder Dia:1/4-inch.Shoulder Length:1/2inch.Thread Length:10mm/0.39".

👍Made of Alloy Steel material,strongest and durable.

👍Drive system is a hexagon-shaped hole,socket cap head fasteners are very common in industrial applications.

👍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.

✔ Includes 225 Pcs, 10 Sizes, M4 Hex Socket Button Head Cap Screws, Thread Pitch 0.7 mm, Thread Size ( Diameter) 4 mm, Head Diameter 7.4 mm, Head Height 2.0 mm, Thread Length From 6 mm to 40 mm : M4 x 6, M4 x 8, M4 x 10, M4 x 12, M4 x 16, M4 x 20, M4 x 25, M4 x 30, M4 x 35, M4 x 40

✔ Strength Grade of Screws: 10.9 Grade, Tensile Strength: 1040 N/mm², Hardness: HRC 32-39; Material of Screws: Alloy Steel, Black Oxide Finish, High Strength And Anti-rust

✔ Includes 225 Pcs M4 Hex Nuts to Meet Different Applications, Material of Nuts: Alloy Steel, Black Oxide Finish

Made of high quality Alloy Steel Grade 10.9.

Thread Diameter: 1/4 Inch; Total Length: 2 Inch (Head Included); Thread Count: 20.

Drive Type: Allen Hex Socket 5/32 Inch; Color: Black Oxide.

Thread Size: #10-24; Shoulder Size: 1-1/4" x 1/4"(L*D)

Made of alloy steel, with high strength, high toughness, wear-resistance, and corrosion resistance.

The hex socket head can achieve high-torque tightening with limited clearance.

Drive Type: Hex Socket; Head Style: Hex Head; Material: 14.9 Alloy Steel

Package Content: 50pcs x Hex Socket Cap Screw; Product Name: Hex Socket Cap Screw; Thread Size: M2 x 15mm/0.08" x 0.6"(D*L)

Weight: 18g; Main Color: Black; Thread Pitch: 0.4mm

Premium Material: All door handle grub screws are made of superior alloy steel material, which has excellent rust, oxidation and corrosion resistance properties, not easy to break or fade, and ensures long service life.

Easy to Use: The hex 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 allen head cap screws are packed in a sturdy transparent storage box organizer, which can offer you not only the perfect socket head cap screws, but also the perfect storage system for them.

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

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