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Woodruff Keys

Woodruff Key

Woodruff Keys are used for locking gears and pulleys to shafts. On the shaft, they fit into a keyseat, which is a circular pocket that retains the key. An exposed portion of the key fits into a rectangular groove, often called the keyway, in the gear or pulley. Because the keyseat is circular, the key will self-adjust to angled spines. The 200-series is full radius; all other Woodruff Keys have a flat bottom. See our Woodruff Key Dimensions reference charts.

Code Product Qty. Package Qty. Carton  
KY103-8102 1/16 x 1/4" (0.248" Lng) Woodruff Key #201, Carbon Steel
KY103-9102 1/16 x 5/16" (0.311" Lng) Woodruff Key #206, Carbon Steel
KY103-0102 1/16 x 3/8" (0.374" Lng) Woodruff Key #211, Carbon Steel
KY103-1102 1/16 x 1/2" (0.491" Lng) Woodruff Key #1, Carbon Steel
KY113-7152 3/32 x 5/16" (0.311" Lng) Woodruff Key #207, Carbon Steel
KY113-8152 3/32 x 3/8" (0.374" Lng) Woodruff Key #212, Carbon Steel
KY113-9152 3/32 x 1/2" (0.491" Lng) Woodruff Key #2, Carbon Steel
KY113-0152 3/32 x 5/8" (0.612" Lng) Woodruff Key #4, Carbon Steel
KY113-1152 1/8 x 3/8" (0.374" Lng) Woodruff Key #213, Carbon Steel
KY113-2152 1/8 x 1/2" (0.491" Lng) Woodruff Key #3, Carbon Steel
KY113-3152 1/8 x 5/8" (0.612" Lng) Woodruff Key #5, Carbon Steel
KY113-4162 1/8 x 3/4" (0.740" Lng) Woodruff Key #7, Carbon Steel
KY113-5162 5/32 x 5/8" (0.612" Lng) Woodruff Key #6, Carbon Steel
KY113-6162 5/32 x 3/4" (0.740" Lng) Woodruff Key #8, Carbon Steel
KY113-7162 5/32 x 7/8" (0.866" Lng) Woodruff Key #10, Carbon Steel
KY103-2102 3/16 x 5/8" (0.612" Lng) Woodruff Key #61, Carbon Steel
KY103-3102 3/16 x 3/4" (0.740" Lng) Woodruff Key #9, Carbon Steel
KY103-4112 3/16 x 7/8" (0.866" Lng) Woodruff Key #11, Carbon Steel
KY103-5112 3/16 x 1" (0.992" Lng) Woodruff Key #13, Carbon Steel
KY103-6112 3/16 x 1 1/8" (1.114" Lng) Woodruff Key #16, Carbon Steel
KY103-7112 3/16 x 1 1/4" (1.240" Lng) Woodruff Key #19, Carbon Steel
KY103-9112 3/16 x 2 1/8" (1.380" Lng) Woodruff Key #126, Carbon Steel
KY103-8112 3/16 x 2 1/8" (1.723" Lng) Woodruff Key #26, Carbon Steel
KY113-3142 7/32 x 7/8" (0.866" Lng) Woodruff Key #12, Carbon Steel
KY113-4152 7/32 x 1" (0.992" Lng) Woodruff Key #14, Carbon Steel
KY113-5152 7/32 x 1 1/8" (1.114" Lng) Woodruff Key #17, Carbon Steel
KY113-6152 7/32 x 1 1/4" (1.240" Lng) Woodruff Key #20, Carbon Steel
KY103-0112 1/4 x 3/4" (0.740" Lng) Woodruff Key #91, Carbon Steel
KY103-1112 1/4 x 7/8" (0.866" Lng) Woodruff Key #A, Carbon Steel
KY103-2112 1/4 x 1" (0.992" Lng) Woodruff Key #15, Carbon Steel
KY103-4122 1/4 x 1 1/8" (1.114" Lng) Woodruff Key #18, Carbon Steel
KY103-5122 1/4 x 1 1/4" (1.240" Lng) Woodruff Key #21, Carbon Steel
KY103-6122 1/4 x 1 3/8" (1.362" Lng) Woodruff Key #22, Carbon Steel
KY103-7122 1/4 x 1 1/2" (1.484" Lng) Woodruff Key #24, Carbon Steel
KY103-9122 1/4 x 2 1/8" (1.380" Lng) Woodruff Key #127, Carbon Steel
KY103-8122 1/4 x 2 1/8" (1.723" Lng) Woodruff Key #27, Carbon Steel
KY103-0122 1/4 x 2 3/4" (2.137" Lng) Woodruff Key #R, Carbon Steel
KY103-1122 1/4 x 2 3/4" (2.000" Lng) Woodruff Key #RX, Carbon Steel
KY103-2122 5/16 x 1" (0.992" Lng) Woodruff Key #B, Carbon Steel
KY103-3122 5/16 x 1 1/8" (1.114" Lng) Woodruff Key #C, Carbon Steel
KY113-4132 5/16 x 1 1/4" (1.240" Lng) Woodruff Key #D, Carbon Steel
KY113-5132 5/16 x 1 3/8" (1.362" Lng) Woodruff Key #23, Carbon Steel
KY113-6132 5/16 x 1 1/2" (1.484" Lng) Woodruff Key #25, Carbon Steel
KY113-8132 5/16 x 2 1/8" (1.380" Lng) Woodruff Key #128, Carbon Steel
KY113-7132 5/16 x 2 1/8" (1.723" Lng) Woodruff Key #28, Carbon Steel
KY113-9132 5/16 x 2 3/4" (2.317" Lng) Woodruff Key #S, Carbon Steel
KY113-0132 5/16 x 2 3/4" (2.000" Lng) Woodruff Key #SX, Carbon Steel
KY113-1132 3/8 x 1" (0.992" Lng) Woodruff Key #152, Carbon Steel
KY113-2132 3/8 x 1 1/4" (1.240" Lng) Woodruff Key #E, Carbon Steel
KY113-3132 3/8 x 1 3/8" (1.362" Lng) Woodruff Key #F, Carbon Steel
KY113-4142 3/8 x 1 1/2" (1.484" Lng) Woodruff Key #G, Carbon Steel
KY113-6142 3/8 x 2 1/8" (1.380" Lng) Woodruff Key #129, Carbon Steel
KY113-5142 3/8 x 2 1/8" (1.723" Lng) Woodruff Key #29, Carbon Steel
KY113-7142 3/8 x 2 3/4" (2.317" Lng) Woodruff Key #T, Carbon Steel
KY113-8142 3/8 x 2 3/4" (2.000" Lng) Woodruff Key #TX, Carbon Steel
KY113-9142 7/16 x 2 3/4" (2.317" Lng) Woodruff Key #U, Carbon Steel
KY113-0142 7/16 x 2 3/4" (2.000" Lng) Woodruff Key #UX, Carbon Steel
KY113-1142 1/2 x 2 3/4" (2.317" Lng) Woodruff Key #V, Carbon Steel
KY113-2142 1/2 x 2 3/4" (2.000" Lng) Woodruff Key #VX, Carbon Steel