830pcs M3 M4 M5 M6 304 Stainless Steel Flat Head Hex Screw & Nut Kit
830pcs M3 M4 M5 M6 304 Stainless Steel Flat Head Hex Screw & Nut Kit
Couldn't load pickup availability
Short Product Description
Short Product Description
Stop wasting time running to the hardware store for a single missing bolt. This 830-piece professional assortment kit features high-grade 304 stainless steel flat-head socket screws, nuts, and washers in M3, M4, M5, and M6 sizes. Designed for a flush, professional finish, these countersunk bolts are perfect for PC building, 3D printer maintenance, drone repairs, and household DIY. Organized in a durable, transparent case with included hex wrenches, it’s the ultimate "peace of mind" kit for any maker or technician.
Key Features
Key Features
- Complete 830-Piece Set: Includes screws, nuts, washers, and wrenches—no additional tools required.
- 304 Stainless Steel: Marine-grade protection against rust and oxidation for long-term reliability.
- Countersunk Flat Head: Sits flush with surfaces for a sleek, professional, and snag-free finish.
- Precision Metric Thread: Standardized M3, M4, M5, and M6 sizes ensure compatibility with most electronic and mechanical gear.
- Heavy-Duty Storage Case: High-quality transparent organizer prevents mixing and makes inventory checks easy.
Full Product Description
Full Product Description
The Professional Choice for Flush-Mount Precision
When your project requires a clean, aerodynamic, or snag-free surface, standard round-head screws won't cut it. Our Countersunk Flat Head Screws are designed to sit flush with your material, providing a professional aesthetic and structural integrity. Whether you are assembling electronic enclosures at SCCCLTD or repairing high-end furniture, these bolts provide the precision you need.
Marine-Grade 304 Stainless Steel Durability
Don't settle for cheap zinc-plated screws that rust within months. Every component in this kit is forged from 304 Stainless Steel (18-8). This means superior corrosion resistance, high tensile strength, and longevity in both indoor and humid outdoor environments. It is the gold standard for hardware used in humid climates like Hong Kong.
All-in-One Organized Solution
Nothing halts productivity like a messy toolbox. This kit is meticulously partitioned by size, ranging from M3 to M6. We’ve included matching nuts and washers for every diameter, plus the specific Allen wrenches (Hex keys) required for each. It’s a complete ecosystem in one box, ensuring you always have the right fastener for the job.
Versatile Applications
From securing CCTV brackets and STEM robotics kits to industrial maintenance, this metric thread assortment is compatible with most international standards. The internal hex drive ensures high torque transfer without the risk of "cam-out" or stripping the head.
Technical Specifications
Technical Specifications
- Component Type: Screws, Nuts, Washers, Tools
- Screws:Sizes: M3, M4, M5, M6 (Lengths: 8mm–20mm)Material: 304 Stainless SteelDrive Type: Hex Socket (Internal Hex)Head Style: Flat / Countersunk
- Nuts:Sizes: M3, M4, M5, M6Material: 304 Stainless SteelShape: Hexagonal
- Washers:Type: Flat WashersSizes: M3–M6Material: 304 Stainless Steel
- Tools:Quantity: 4 pcsType: Allen (Hex) WrenchesMaterial: Alloy SteelStyle: L-Shape
- Total Quantity: 830 pieces
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q: Is 304 stainless steel magnetic?
A: 304 stainless steel is generally non-magnetic in its annealed state. However, after the cold-working process used to forge screws, it may exhibit a slight magnetic pull. This is a normal characteristic of high-quality stainless steel fasteners.
Q: Will these screws rust if used outdoors in Hong Kong?
A: 304 stainless steel offers excellent resistance to humid conditions. While 316 grade is preferred for direct saltwater contact, 304 is the industry standard for general outdoor use and provides significantly better protection than carbon steel or zinc plating.
Q: What is the thread pitch for these screws?
A: These are standard Metric Coarse threads: M3 (0.5mm), M4 (0.7mm), M5 (0.8mm), and M6 (1.0mm).
Target Users / Applications
Target Users / Applications
- PC Builders & Modders: Perfect for securing internal components and custom cases.
- STEM & Robotics Students: Essential for building structural frames and motor mounts.
- CCTV Installers: Reliable, rust-proof mounting for cameras and brackets.
- Furniture Repair: Flush-head design is ideal for wood and metal furniture assembly.
