BlackJack Router Bushing Spring Washers:
These spring steel washers fit perfectly over the thread of 1-3/16" bushings (standard PC size). The nut will thread against the washer, collapsing it. The spring tension against the nut prevents it from vibrating loose. It's that simple.
Paul's Sharpening Service
338 Barry Rd., Madoc, ON
Brettwood Machinery Works Ltd.
15138 Hwy 62 N
Madoc, Ontario, Canada
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