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Key No. 808

Key No. 808: 1/4 × 1 in disc segment (6.35 mm thick, 25.40 mm diameter), height 11.11 mm (= radius minus the 1/16 in flat offset), chord 25.20 mm; nominal values, no edge breaks

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

key no.808
nominal W × B, in1/4 × 1
key length F, in0.992
height C max / min, in0.438 / 0.433
height D max / min, in0.428 / 0.422
flat below centre E, in1/16
shaft seat width A min – max, in0.2487 – 0.2505
shaft seat depth B, in0.3080
cutter diameter F min – max, in1.000 – 1.020
key above shaft C, in0.1250
hub seat width D, in0.2510
hub seat depth E, in0.1310
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From the full sheet

Woodruff keys, inch (ANSI B17.2): key numbers #202 to #1212, key sizes and keyseat depths: every size, notes, mating features and sources. What are the dimensions of a Woodruff key (#404, #606, #1212) and the keyseat depth in the shaft and hub (ANSI B17.2)?

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