10pcs Brass Washers for Folding Knife C81 C158 C186 DIY Gaskets

10-Pack Copper Alloy Washers for DIY Folding Knife Assembly

Upgrade your folding knife builds and repairs with these precision-machined brass (copper alloy) washers. Designed to fit popular folding knife pivot systems including C81, C158, and C186 configurations, these gaskets ensure smooth, rattle-free blade action and proper pivot spacing. Sold in a convenient 10-piece lot — ideal for DIY knife makers, hobbyists, and everyday knife maintenance.

Available Size Options

• Type 1: Outer Ø 11mm | Inner Ø 4.5mm | Thickness 0.5mm
• Type 2: Outer Ø 11mm | Inner Ø 5.6mm | Thickness 0.5mm
• Type 3: Outer Ø 8mm | Inner Ø 4mm | Thickness 0.2mm
• Type 4: Outer Ø 11mm | Inner Ø 5.1mm | Thickness 0.3mm

Key Features

• Material: High-quality copper alloy (brass) — naturally corrosion-resistant and durable
• Multiple size variants to suit different knife pivot diameters and tolerances
• Precision-stamped for consistent dimensions and smooth, uniform fit
• 10-piece pack — enough for multiple builds or replacements
• Compatible with: C81, C158, C186 folding knife frames and similar DIY knife platforms
• Use: Home DIY knife making, custom builds, pivot maintenance, and tuning

Specifications

Related Products You May Like

Looking for more workshop and DIY accessories? Check out our 2.3m Flexible Drain Cleaning Brush – Multi-Use Tool and our popular BINCOO Solid Wood Walnut Bean Shovel – Precision Craft Accessory for your hobby workshop needs.

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What folding knife models are these brass washers compatible with?

A: These copper alloy washers are specifically designed for C81, C158, and C186 folding knife frames. They are also suitable for similar DIY folding knife platforms that use pivot gaskets within the listed outer and inner diameter ranges (8–11mm OD, 4–5.6mm ID).

Q: What size should I choose for my folding knife build?

A: Choose based on your knife's pivot screw diameter and the clearance required. Type 1 (4.5mm ID / 0.5mm thick) and Type 2 (5.6mm ID / 0.5mm thick) suit standard pivot screws, while Type 3 (4mm ID / 0.2mm thin) is great for ultra-fine tolerance adjustments. Type 4 (5.1mm ID / 0.3mm thick) offers a mid-range option for fine-tuning blade action.

Q: Are these washers durable enough for regular use?

A: Yes. Made from copper alloy (brass), these washers are naturally corrosion-resistant and hard-wearing. Brass is a preferred material in knife-making communities for pivot gaskets because it is tough yet does not score or damage softer metal pivot housings.

Q: How many pieces are included per order?

A: Each order contains 10 washers of your selected size type, providing ample supply for new builds, replacements, or experimental tuning across multiple knife projects.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.