説明
A missing bolt is not a small problem. It is a stopped project. Every maker knows the moment: the final bracket goes on, and the one fastener you need is not in the tray. The hardware store is closed, the online order will take three days, and the evening is gone. This 20-piece kit covers M3 through M14 in 304 stainless steel, so the common sizes are always within reach.
The material matters more than the count. Zinc-plated steel looks acceptable on a shelf and rusts within a season outdoors. Once the plating is scratched, the steel underneath begins to corrode. Grade 304 stainless resists oxidation through the full thickness of the metal. It stands up to humidity, handles rain, and survives salt air without pitting.
That is why 304 is the accepted standard for boats, outdoor furniture, food-contact equipment, and anything else that lives outside its protective coating. For fasteners, the alloy is not a detail. It is the specification. The difference between a repair that lasts a season and one that lasts a decade is often decided at the moment you choose the bolt.
This is not a box of random hardware. It is a small guarantee that the next repair, mount, or frame will finish on the day you start it. Keep one kit in the workshop and one in the vehicle, and the interrupted evening simply stops happening.
Project insurance, measured in millimetres.
Key Features
- 20-piece assortment spanning M3, M4, M5, M6, M8, M10, M12 and M14
- A2-304 stainless steel that resists rust, staining and salt-air corrosion
- Bare stainless finish with no plating to chip, flake or discolour
- Suitable for marine, outdoor and food-contact environments
- Standard metric hex heads that fit common sockets and spanners
- Compact kit format that stores easily in a shop drawer or vehicle toolbox
- Works with wood, metal and composite assemblies without galvanic concerns
Technical Specifications
- Material: A2-304 stainless steel
- Size Range: M3, M4, M5, M6, M8, M10, M12, M14
- Quantity: 20 pieces per lot
- Head Type: hexagonal (standard metric)
- Finish: bare stainless, unplated
- Corrosion Grade: suitable for marine and outdoor use
- Drive: external hex, standard socket sizes
- Thread Standard: metric coarse pitch
- Temperature Range: stable from sub-zero to high ambient heat
- Applications: furniture, brackets, trailers, marine fittings, kitchen equipment
Application Scenarios
This kit suits the home workshop, the mobile mechanic, the boat owner and the maker who repairs rather than replaces. Use it to rebuild a trailer hitch, secure an outdoor frame, reattach a commercial kitchen fixture, or mount solar hardware that has to survive weather. Because the fasteners are 304 stainless, the same kit works indoors and outside without a change of plan. It is the tray you reach for before you know exactly which size the job needs.
Frequently Asked Questions
Q: Is 304 stainless better than zinc plated steel?
A: For outdoor and wet environments, yes. Zinc plating protects only until the coating is scratched, and then the steel beneath rusts. Grade 304 stainless resists corrosion through the full thickness of the metal, so it holds up in humidity and salt air. The slightly higher cost buys a much longer service life.
Q: What sizes are included?
A: The set covers M3 through M14, the range that handles most furniture, bracket, and machinery work. That spans the small fasteners used in electronic enclosures up to the heavier bolts used on frames and mounts. Exact piece counts per size are listed on the label.
Q: Can I use these on a boat?
A: Yes. Grade 304 stainless is widely used in marine fittings, so it tolerates salt spray far better than plated steel. For permanently submerged or high-load structural work, grade 316 is the usual upgrade, but 304 handles most deck and cabin jobs well.
Q: Will these fit standard sockets?
A: They use standard metric hex heads, so any ordinary socket or spanner set works. No special tooling is required. Match the socket to the head size stamped on the bolt and tighten to the torque your project specifies.
Q: Are the bolts magnetic?
A: Grade 304 stainless is only weakly magnetic, and in the annealed state it may show little or no attraction. This is normal for the grade and does not indicate a quality problem. It is one of the reasons 304 is chosen for food-contact and outdoor hardware.
Q: Do the bolts come with matching nuts and washers?
A: The lot is supplied as bolts in the sizes listed. If you need matched nuts and washers for a full assembly, message us and we can confirm what is available in the same grade. Buying the set together avoids mismatched hardware later.
Q: Which size should I order for a typical furniture repair?
A: Most indoor and outdoor furniture uses M5 through M8, so those sizes cover the majority of jobs. M3 and M4 suit smaller brackets and enclosures, while M10 to M14 handle frames and heavier mounts. A mixed kit means you are ready for whichever the job turns out to need.
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