What sizes come in this acorn nut set?

The 10-piece set covers M3, M4, M5, M6, M8, M10, and M12 in metric coarse thread. It's a mix of sizes, so you get a spread rather than ten of one size. Check the count you need before relying on it for a single project.

Will these acorn nuts fit my bolts?

They use standard metric coarse threads, so they fit common M3 through M12 bolts and threaded rod. Across-flats sizes match normal wrenches, like 13mm for M8 and 17mm for M10. They won't fit fine-pitch or imperial threads.

Are these black acorn nuts rust resistant?

They're carbon steel with a black oxide finish, which gives basic corrosion resistance and a clean dark look. That's fine for indoor or covered use. For wet or outdoor spots, plan on a coating or pick a stainless option instead.

Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set

Name: Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set
Brand: Compel
SKU: FAST-00121
Price: 19.99 USD
Availability: InStock

Stock #:TBS-05697

SKU:FAST-00121

Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set - Image 1

$19.99

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Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set

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Questions about this product

What sizes come in this acorn nut set?: The 10-piece set covers M3, M4, M5, M6, M8, M10, and M12 in metric coarse thread. It's a mix of sizes, so you get a spread rather than ten of one size. Check the count you need before relying on it for a single project.
Will these acorn nuts fit my bolts?: They use standard metric coarse threads, so they fit common M3 through M12 bolts and threaded rod. Across-flats sizes match normal wrenches, like 13mm for M8 and 17mm for M10. They won't fit fine-pitch or imperial threads.
Are these black acorn nuts rust resistant?: They're carbon steel with a black oxide finish, which gives basic corrosion resistance and a clean dark look. That's fine for indoor or covered use. For wet or outdoor spots, plan on a coating or pick a stainless option instead.

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Set of 10 black carbon steel acorn nuts, also known as domed cap nuts, in metric sizes from M3 to M12.

Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set

Price$19.99

Rating4.8

Sold52+

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This professional-grade set of black carbon steel acorn nuts provides a secure, finished fastening solution. The domed cap design offers a smooth, protective finish, while the metric sizing ensures compatibility with a wide range of projects. Ideal for applications where safety and aesthetics are priorities. Features and Benefits - Black Carbon Steel Construction - Provides excellent strength and durability with a corrosion-resistant finish for long-lasting performance. - Domed Cap (Acorn) Design - Creates a smooth, finished appearance and protects internal threads from damage and debris ingress. - Metric Sizing (M3-M12) - Offers versatile compatibility with a broad spectrum of bolts and threaded rods for various industrial and DIY tasks. - Hexagonal Base - Allows for easy and secure tightening with standard wrenches, ensuring a firm, reliable hold. Applications - Machinery and equipment assembly where a clean, safe fastener end is required. - Automotive restoration and modification projects for a polished, professional look. - Furniture and fixture construction to prevent snagging and enhance safety.

Thread Sizes: M3, M4, M5, M6, M8, M10, M12. Material: Carbon Steel. Drive Type: Hex. Finish: Black. Height: Varies by size. Product Type: Acorn Nut (Domed Cap Nut). Quantity: 10 pieces. Thread Type: Metric. Width Across Flats: Varies by size. Height (Approx.): M3: ~3mm, M4: ~4mm, M5: ~5mm, M6: ~6mm, M8: ~8mm, M10: ~10mm, M12: ~12mm. Thread Sizes: M3, M4, M5, M6, M8, M10, M12. Material: Black Carbon Steel. Thread Pitch (Standard Metric): M3: 0.5mm, M4: 0.7mm, M5: 0.8mm, M6: 1.0mm, M8: 1.25mm, M10: 1.5mm, M12: 1.75mm. Across Flats (AF) - Nominal: M3: 5.5mm, M4: 7mm, M5: 8mm, M6: 10mm, M8: 13mm, M10: 17mm, M12: 19mm. Corrosion Resistance: Basic (Black Oxide provides limited protection). Drive Type: Hex Socket. Function: Decorative fastening, covering exposed threads, providing a finished appearance. Hardness: Medium Carbon Steel, typical HRB 70-100. Head Style: Domed/Crown Hex. Product Type: Acorn Nut / Domed Cap Nut. Quantity per Lot: 10 pieces (mix of sizes). Surface Finish: Black Oxide / Blackened. Tensile Strength: Approx. 400-550 MPa. Q: What sizes are included in this set of acorn nuts? A: This set includes acorn nuts in metric sizes M3, M4, M5, M6, M8, M10, and M12. The package contains 10 pieces total, with a mix of these sizes. They feature a domed cap design with a hex base for installation.. Q: What is the material and finish of these acorn nuts? A: These acorn nuts are made from black carbon steel, which provides good strength and durability. The black finish offers a clean appearance and some resistance to corrosion for general-purpose use.. Q: Are these acorn nuts compatible with standard metric bolts? A: Yes, these acorn nuts are designed to thread onto standard metric bolts and screws in the specified sizes (M3-M12). The internal threading matches standard metric pitch specifications for reliable compatibility.. Q: Is there any warranty or guarantee on these nuts? A: These fasteners are sold as-is for general hardware use. It's recommended to inspect them upon receipt and test fitment before final installation to ensure they meet your specific requirements.. Q: How does the value of this 10-piece set compare to buying individual nuts? A: This set offers good value by providing multiple common metric sizes in one package, eliminating the need to purchase separate packs for different projects. The assortment is practical for workshops or various repair tasks..

Acorn Cap Nuts | M3-M12 Metric Domed Crown Hex | 10-Piece Carbon Steel Protective Fastener Set

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