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Nominal size (mm): 1/4" x 20. L1 (mm): 50. L2 (mm): 19. D (mm): 6. a (mm): 4,9. Mandrel hole Ø (mm): 5,2. American coarse thread UNC ANSI B 1.1. 3 pcs.. Read more.
American coarse thread UNC ANSI B 1.1 3 pcs.