🔩 Product Overview: Phillips Countersunk Flat Head Screws + Nuts & Washers – A2 Stainless Steel (M2–M10)
Stop searching for matching nuts and washers every time you need a fastener. This complete set includes A2 stainless steel Phillips countersunk flat head machine screws, plus matching hex nuts and flat washers – all in one convenient package. The 90° flat head sinks flush into countersunk holes for a smooth, professional finish, while the nuts and washers give you everything needed for through‑hole assemblies. Made from 304 stainless steel, these fasteners resist rust, oxidation, and heat – perfect for outdoor furniture, marine hardware, electronics enclosures, and industrial equipment. Available in metric sizes from M2 to M10, with lengths (measured including the head) to suit your project. From GooBetter – reliable fastening kits that save time and hassle.
✨ Why This Complete Screw, Nut & Washer Kit Is a Workshop Essential
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Complete set – screw + nut + flat washer – Each screw comes with a matching A2 stainless hex nut and flat washer. No separate purchases, no mismatched threads.
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A2 stainless steel (304) – Excellent corrosion, oxidation, and heat resistance. High strength and high toughness. Ideal for outdoor, marine, and industrial use.
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Phillips countersunk flat head – Sits flush in tapered holes for a smooth, snag‑free surface. Perfect for panel mounting, furniture, and decking.
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Wide metric size range: M2, M2.5, M3, M4, M5, M6, M8, M10 – From tiny electronics up to heavy‑duty machinery. One kit covers almost all common metric fastening needs.
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Fully threaded, coarse pitch – Standard metric threads run the entire screw length. Length measured including head (total screw length).
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Wide application range – Furniture decoration, industrial machinery, automotive, marine, electronics, and general DIY.
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Brand: GooBetter, made in China – Consistent quality and precise dimensions. Packaged for protection.
📏 Technical Specifications – Countersunk Screw + Nut + Washer Kit (A2 Stainless)
| Specification |
Details |
| Brand |
GooBetter |
| MPN |
Does Not Apply |
| Product Type |
Phillips Countersunk Flat Head Screws + Hex Nuts + Flat Washers (set) |
| Material |
A2 Stainless Steel (304 / 18-8) |
| Drive Style |
Phillips cross‑head |
|
|
| Head Style |
Flat / Countersunk (82°–90°) |
| System of Measurement |
Metric |
| Screw Sizes (Diameter) |
M2, M2.5, M3, M4, M5, M6, M8, M10 |
| Thread Pitch (coarse) |
M2x0.4, M2.5x0.45, M3x0.5, M4x0.7, M5x0.8, M6x1.0, M8x1.25, M10x1.5 |
| Thread Type |
Fully threaded |
| Length Measurement |
Length includes the head (total screw length) – e.g., M4 x 20mm = 20mm overall |
| Included Components |
1 screw + 1 hex nut + 1 flat washer per size (quantity based on selection) |
❓ FAQs – Countersunk Screw, Nut & Washer Kit (A2 Stainless)
🔸 Are the nuts and washers included for every screw size?
Yes – each screw comes with one matching A2 stainless hex nut and one flat washer of the same thread size. For example, an M5 screw includes an M5 nut and an M5 flat washer. You can select quantities per size from the dropdown options.
🔸 How is screw length measured – under head or including head?
For these countersunk screws, length is measured including the head (total screw length). This is standard for flat head screws. For example, an M4 x 20mm screw is 20mm long from the top of the flat head to the tip. Countersunk holes should be drilled to match this total depth.
🔸 Will A2 (304) stainless steel rust outdoors?
A2 stainless is highly resistant to moisture, rain, and humidity – perfect for most outdoor use. For direct saltwater immersion or heavy coastal spray, A4 (316) stainless is better, but for garden furniture, railings, and general outdoor DIY, 304 lasts for years without rust.
🔸 What Phillips screwdriver size works for M2 through M10?
M2–M2.5: use PH0 or PH00. M3–M4: use PH1. M5–M6: use PH2. M8–M10: use PH2 or PH3 (PH2 works for most). Using the correct size prevents stripping.
🔸 Can I use these screws without the nuts (e.g., into tapped holes)?
Absolutely. These are standard machine screws – they can be used with the included nuts for through‑hole applications, or screwed directly into pre‑tapped metric holes. The washers help protect the surface and distribute load in either case.
🔸 Are bulk or mixed size packs available?
Yes – you can select individual sizes and quantities from the dropdown options. For larger volume or custom mixed kits, please contact us via the "Ask a question" tab for a quote.
