Stainless Steel Bolts and Nuts Assortment Kit 304 A2 Hex Head with Flat Lock Washers
Stainless Steel Bolts and Nuts Assortment Kit 304 A2 Hex Head with Flat Lock Washers
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Stainless Steel Bolts and Nuts Assortment Kit — Rust-Proof Fasteners for Every Project
When a loose bolt or missing nut stops your project cold, you need a kit that has every size on hand. Whether you're a weekend DIYer tackling deck repairs or a seasoned mechanic keeping equipment running, mismatched fasteners waste time and money. This kit puts an end to hardware store runs.
Available in two configurations: a 292-piece Metric set (M6 / M8 / M10) and a 262-piece SAE set (1/4-20 / 5/16-18 / 3/8-16). Every piece is machined from 304 stainless steel (A2 grade) — the same corrosion-resistant alloy trusted in marine, food-processing, and outdoor environments. Each kit ships in a clear, compartmentalized storage case with a bonus precision tweezers for handling small hardware.
From boat deck hardware and outdoor furniture assembly to HVAC brackets and automotive repairs, this stainless steel bolts and nuts assortment kit covers the fastener sizes you reach for most.
Key Features
- 🔩 304 A2 Stainless Steel Construction — Resists rust, corrosion, and staining in wet, marine, and outdoor environments without surface coatings that can chip or peel.
- 📦 Comprehensive Assortment in One Box — 292 pieces (Metric) or 262 pieces (SAE) covering the most commonly used bolt lengths, nut sizes, flat washers, and lock washers in a single purchase.
- 🗂️ Organized Compartment Storage Case — Clear, labeled compartments keep every size separated and visible so you grab the right piece on the first try, every time.
- 🔧 Hex Head Design for Maximum Torque — Standard hex profile works with any wrench, socket, or ratchet you already own — no specialty tools required.
- 🛡️ Flat and Lock Washers Included — Flat washers distribute load; lock washers resist loosening from vibration — both included so your connections stay tight.
- 🎯 Bonus Precision Tweezers — Stainless steel tweezers included in every kit for placing small fasteners in tight spaces without fumbling.
What's in the Box
Metric Kit — 292 Pieces (M6 / M8 / M10)
- M6×12 Hex Flange Bolts — 32 pcs
- M6×16 Hex Flange Bolts — 8 pcs
- M6×20 Hex Flange Bolts — 8 pcs
- M6×25 Hex Flange Bolts — 6 pcs
- M6×30 Hex Flange Bolts — 5 pcs
- M6×16 Hex Bolts — 30 pcs
- M8×20 Hex Bolts — 10 pcs
- M8×25 Hex Bolts — 6 pcs
- M8×30 Hex Bolts — 5 pcs
- M10×30 Hex Bolts — 2 pcs
- M6 Flat Washers — 40 pcs | M6 Lock Washers — 80 pcs
- M8 Flat Washers — 33 pcs | M8 Lock Washers — 33 pcs
- M10 Flat Washers — 2 pcs | M10 Lock Washers — 2 pcs
- M6 Hex Nuts — 40 pcs | M8 Hex Nuts — 31 pcs | M10 Hex Nuts — 2 pcs
- Precision Tweezers — 1 pc
SAE Kit — 262 Pieces (1/4-20 / 5/16-18 / 3/8-16)
- 1/4-20×3/4" Hex Bolts — 10 pcs | 1/4-20×1" — 10 pcs | 1/4-20×1-1/2" — 6 pcs | 1/4-20×2" — 35 pcs | 1/4-20×2" — 6 pcs
- 5/16-18×1/2" Hex Bolts — 25 pcs | 5/16-18×1/2" — 4 pcs | 5/16-18×3/4" — 10 pcs | 5/16-18×1" — 6 pcs | 5/16-18×2" — 4 pcs
- 3/8-16×2-1/2" Hex Bolts — 2 pcs | 3/8-16×1-1/2" — 4 pcs
- 1/4-20 Hex Nuts — 35 pcs | 5/16-18 Hex Nuts — 25 pcs | 3/8-16 Hex Nuts — 6 pcs
- 1/4-20 Flat & Lock Washers — 35 pcs | 5/16-18 Flat & Lock Washers — 25 pcs | 3/8-16 Flat & Lock Washers — 6 pcs
- Precision Tweezers — 1 pc
Who Is This For
Keep one kit in the garage and stop making hardware store trips mid-project. Deck repairs, fence posts, shelving brackets — this kit covers them all.
304 stainless steel resists saltwater corrosion, making this kit ideal for boat hardware, dock fittings, and any outdoor installation exposed to moisture.
Keep a kit in the shop for quick repairs and bracket installations. The organized case means no digging through loose hardware bins during a job.
Stock one kit per maintenance cart for HVAC, equipment, and facility repairs. The compartmentalized case makes restocking and inventory checks fast.
Technical Specifications
| Material | 304 Stainless Steel (A2 Grade) |
| Finish | Natural Stainless (Brushed) |
| Head Style | Hex Head |
| Thread Type — Metric | Metric Coarse (M6, M8, M10) |
| Thread Type — SAE | UNC (1/4-20, 5/16-18, 3/8-16) |
| Piece Count | 292 pcs (Metric) / 262 pcs (SAE) |
| Included Hardware | Hex Bolts, Hex Nuts, Flat Washers, Lock Washers, Tweezers |
| Storage | Clear Compartmentalized Plastic Case |
| Weight | Approx. 1.3 kg (Metric) / 1.36 kg (SAE) |
| Corrosion Resistance | Suitable for marine, outdoor, and food-adjacent environments |
| Age Warning | Not suitable for children under 5 years — small parts |
Frequently Asked Questions
What is the difference between the Metric and SAE variants?
Are these bolts suitable for outdoor or marine use?
Do the lock washers prevent bolts from loosening under vibration?
What tools do I need to install these bolts?
Can I use these bolts in food-processing or food-contact environments?
Are the bolt lengths consistent across all sizes in the kit?
Is the storage case reusable and durable?
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Return policy
You have 30 days to return the product.
You must use a RMA form for approval; returns / exchanges sent back without acquiring the RMA form will not be accepted. Returns / exchanges must be postmarked for return within 14 business days of the delivery date or it will not be accepted.
Returned items must be in the original packaging, contain all components, and be in new condition. Returns may require additional information or a photo of the item(s) to process the return. Returns received without the proper return label may take more than 10 business days to credit.
Original shipping fees are non-refundable.
You must provide a receipt or proof of purchase.
Customer is responsible for return shipping costs.
Special orders are non-cancelable and non-refundable.
Power Equipment (products that use gas and oil) – Power Equipment products are not eligible for return once it has been oiled or gassed. Once oiled or gassed it cannot be shipped by law.
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