186-Pc Hex Socket Bolt Nut Washer Assortment Kit | Carbon Steel
186-Pc Hex Socket Bolt Nut Washer Assortment Kit | Carbon Steel
186-Piece Hex Socket Cap Screw, Nut & Washer Assortment Kit
Whether you're tackling a home improvement project, metalworking task, or industrial repair, this comprehensive 186-piece hex socket bolt assortment gives you everything you need in one organized kit. Built from Q235 carbon steel to Level 4.8 performance standards, these black cylindrical-head hex socket bolts, matching nuts, and flat washers are ready for demanding applications — all neatly stored in a 10-compartment PP plastic box for fast, frustration-free access.
Made in Mainland China.
Key Features
- Q235 Carbon Steel Construction: Delivers dependable strength and long-lasting durability across a wide range of uses.
- Level 4.8 Performance Rating: High tensile strength and excellent wear resistance ensure a secure, reliable fastening every time.
- 186-Piece Comprehensive Set: Includes multiple sizes of hex socket cap screws, nuts, and flat washers to cover virtually any project need.
- GB Standard Compliant: Manufactured to GB (Guobiao) national standards for guaranteed compatibility and consistent quality in both DIY and industrial applications.
- 10-Compartment Storage Box: The included PP plastic organizer keeps every size separated and within reach — no more searching through loose hardware.
- Black Finish: Clean, professional-looking finish that resists surface abrasion during use.
Specifications
| Material | Q235 Carbon Steel |
| Performance Grade | Level 4.8 |
| Color | Black |
| Head Style | Cylindrical Hex Socket (Allen) |
| Total Pieces | 186 pcs |
| Standard | GB |
| Storage | 10-Compartment PP Plastic Box |
Available Sizes (Length × Diameter)
- 3.5 × 0.4 cm
- 3.0 × 0.4 cm
- 2.5 × 0.4 cm
- 2.0 × 0.4 cm
- 1.8 × 0.4 cm
- 1.6 × 0.4 cm
- 1.2 × 0.4 cm
- 1.0 × 0.4 cm
- 0.8 × 0.4 cm
- 0.6 × 0.4 cm
Package Contents
- 186 × Hex Socket Cap Screws, Nuts & Flat Washers (assorted sizes, boxed)
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Note: Actual color may vary slightly from images due to monitor brightness and lighting conditions. Please allow for minor measurement deviations.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What material are these hex socket bolts made from?
A: All bolts, nuts, and washers in this kit are made from Q235 carbon steel, manufactured to Level 4.8 performance standards. This grade provides high tensile strength and reliable wear resistance, making the set suitable for both DIY metalworking projects and light industrial fastening tasks.
Q: How many sizes are included in the 186-piece hex socket assortment kit?
A: The kit includes 10 different bolt lengths (ranging from 0.6 cm to 3.5 cm, all at 0.4 cm diameter), along with corresponding nuts and flat washers for each size. All 186 pieces are organized in a 10-compartment PP plastic storage box for easy identification and access.
Q: Are these bolts compatible with standard Allen/hex keys?
A: Yes. These are cylindrical hex socket cap screws (also known as Allen head bolts), designed to be driven with standard metric Allen/hex keys or a hex socket bit. They conform to GB (Guobiao) standards, ensuring broad compatibility with common tools and fastening systems.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.