Washer and spacer generator

Need an odd-sized washer or a spacer of a specific thickness? Enter the outer diameter, hole diameter and thickness to get a printable ring in seconds.

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FAQ

What inner diameter fits an M8 bolt?

Use about 8.4 mm for M8, 6.4 mm for M6, 4.3 mm for M4 and 3.2 mm for M3 — standard clearance hole sizes.

Are printed washers strong enough?

For spacers and light loads, yes. Print flat with 100% infill or extra perimeters; use metal washers under high clamping force.

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