#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture
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#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture

#6-32 UNC Countersunk Phillips Screws – Carbon Steel, 5/6/8mm Lengths for Computers, Toys & Furniture

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Price:
$5.37 USD
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In stock (500 units), ready to be shipped

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Description

#6-32 UNC Countersunk Phillips Screws — Flush-Fit Carbon Steel for Electronics, Furniture & Hobby Projects

You're fixing a loose hinge on a wooden cabinet, mounting a circuit board in a PC case, or repairing a fishing reel – and you need small, reliable screws that sit flush. These #6-32 UNC countersunk machine screws are made from carbon steel with a Phillips drive. The flat head sinks perfectly into a pre-drilled countersink, leaving a smooth, snag-free surface.

Choose from 5mm, 6mm, or 8mm overall lengths, with head diameters of 5.2mm or 5.6mm depending on the variant. The #6-32 thread is a standard US coarse size (0.138" / 3.5mm nominal diameter, 32 threads per inch), widely used in electronics, hobby projects, and furniture assembly. Available in Nickel or Black Zinc finish, in packs of 100, 200, 500, or 1000 pieces.

Keep a stash in your workshop for computer cases, electric toys, model making, motorcycles, fishing gear, and furniture hinges — all those little repairs where a flush finish and dependable strength matter.

✅ Compatible with standard #6-32 UNC tapped holes, hex nuts, and lock nuts. Works with #1 Phillips screwdrivers and bits. Suitable for wood, plastic, sheet metal, and light metal assemblies.

Key Features

  • 🔽 Countersunk flat head (82° — UNC standard) — Sits flush with the surface after countersinking. Ideal for smooth, professional finishes on wood, plastic, and sheet metal.
  • 🔧 Phillips drive — Standard cross recess works with common #1 Phillips screwdrivers and bits. Good torque transfer without slipping.
  • 📏 #6-32 UNC thread — Unified National Coarse, 6 gauge diameter (0.138" / 3.5mm nominal), 32 threads per inch. Widely used in North American electronics, appliances, and light machinery.
  • 📐 Three compact lengths — 5mm, 6mm, or 8mm overall — Including head. Fully threaded from under the head to the tip for maximum grip even in shallow holes.
  • 💪 Carbon steel construction (Grade 5 equivalent) — Strong and durable. Provides good tensile strength for light-to-medium duty fastening applications.
  • 🎨 Two finish options — Nickel or Black Zinc — Nickel for a clean, bright appearance; Black Zinc for a darker, low-profile look. Both available in 100, 200, 500, or 1000-piece packs.

Who Is This For

🖥️ PC Builders & Electronics Hobbyists

Mount circuit boards, secure drive bays, and fasten panels inside computer cases where a flush, snag-free surface is essential.

🪑 Furniture & Cabinet Makers

Attach hinges, brackets, and hardware to wood and MDF with a clean countersunk finish that disappears into the surface.

🎣 Hobby & Repair Enthusiasts

Fix fishing reels, electric toys, model kits, and motorcycle components where compact, fully-threaded screws are hard to find.

🔩 Workshop Stockers

Buy in bulk (up to 1000 pcs) to keep a reliable supply of #6-32 UNC countersunk screws on hand for everyday repairs and projects.

Technical Specifications

Thread Size #6-32 UNC
Thread Diameter #6 (0.138" / 3.5mm nominal)
Thread Pitch 32 TPI (Threads Per Inch)
Head Style Countersunk Flat Head
Head Angle 82° (standard for UNC countersunk screws)
Drive Style Phillips (#1 recommended)
Overall Lengths Available 5mm, 6mm, 8mm
Head Diameter 5.2mm or 5.6mm (see variant options)
Material Carbon Steel (Grade 5 equivalent)
Finish Options Nickel / Black Zinc
Pack Sizes 100, 200, 500, 1000 Pcs
Thread Type Fully threaded (head to tip)
Typical Applications Computer cases, electronics, toys, motorcycles, fishing gear, furniture hinges
Corrosion Resistance Indoor / dry environments recommended; not for outdoor/marine use

Frequently Asked Questions

Do I need to countersink the hole for these screws to sit flush?

Yes – these are 82° countersunk screws (the standard for UNC threads). To achieve a flush finish, drill a matching countersink hole using an 82° countersink bit. In soft wood or plastic, you can gently tap the head in, but proper countersinking gives the best result.

What is the difference between #6-32 and metric M3.5 screws?

#6-32 is a US coarse thread (0.138" diameter, 32 TPI). M3.5 is metric (3.5mm diameter, 0.6mm pitch ≈ 42 TPI). They are not interchangeable. #6-32 is very common in North American electronics, appliances, and furniture; M3.5 is more common in European and Asian products. Always match the thread type.

Will these carbon steel screws rust?

Yes – carbon steel will rust if exposed to moisture. These screws are best for indoor applications or dry environments. If you need corrosion resistance for outdoor or marine use, choose stainless steel or apply a protective coating (paint, oil, or zinc plating). We offer plated versions – please contact us.

Can I use these screws with a nut? What nut fits #6-32?

Yes – these are machine screws. Use a standard #6-32 UNC hex nut or lock nut. They will also thread into pre-tapped #6-32 holes. They are not self-tapping, so for wood or plastic, drill a pilot hole and use a threaded insert or nut on the back.

What Phillips screwdriver size should I use?

For #6-32 screws, a #1 Phillips screwdriver is typically the best fit. A #0 may work but can slip; a #2 is too large. Use a quality driver that matches the recess to avoid cam-out and head damage.

Are these screws fully threaded? The lengths are very short.

Yes – with overall lengths of only 5, 6, or 8mm, these screws are fully threaded from under the head to the tip. This gives maximum grip even in shallow holes.

What is the head diameter for each variant?

The head diameter varies by variant: 5.6mm head diameter is available with 6mm length; 5.2mm head diameter is available with 5mm and 8mm lengths. Please check the variant selector for the exact combination you need.

What is the difference between Nickel and Black Zinc finish?

Nickel finish gives a bright, silver appearance and is commonly used in electronics and visible hardware. Black Zinc provides a darker, matte look preferred for motorcycles, fishing gear, and applications where a low-profile finish is desired. Both finishes offer similar corrosion resistance for indoor use.

Order your #6-32 UNC countersunk Phillips screws today — available in Nickel or Black Zinc, in packs of 100 to 1000. Select your preferred length, head diameter, and quantity above.

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