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WOODRUFF KEYS

Woodruff Keys are stocked in C45k key steel, with a minimum tensile strength of 60Kg/mm² or Stainless Steel grade A4. Technifast supply semi-circular woodruff keys to DIN 6888 / ISO 3912 metric sizes and BS 46 Part 1 imperial sizes.

Please contact us to discuss enquiries for special diameters, lengths or materials and bespoke woodruff keys we can manufacture to drawing.  We also offer substantial discounts for volume orders of our engineers keys.

 

 

Woodruff Keys DIN 6888 (Metric)

Width 'W' Height 'H' Length 'L' Diameter (d2 x 2)
1.5 2.6 6.75 7
2 2.6 6.75 7
2 3.7 9.66 10
2 5 12.65 13
2.5 3.7 9.66 10
3 3.7 9.66 10
3 5 12.65 13
3 6.5 15.72 16
4 5 12.65 13
4 6.5 15.72 16
4 7.5 18.57 19
5 6.5 15.72 16
5 7.5 18.57 19
5 9 21.63 22
5 10 24.49 25
6 7.5 18.57 19
6 9 21.63 22
6 10 24.49 25
6 11 27.35 28
7 10 24.49 25
8 9 21.63 22
8 11 27.35 28
8 13 31.43 32
10 11 27.35 28
10 13 31.43 32
10 13 43.08 45

 

Standards 

  • Woodruff Key DIN 6888 / ISO 3912 (metric)
  • Woodruff Key BS 46 Part 1 (imperial)

Materials

  • C45k key steel, with a minimum tensile strength of 60Kg/mm²
  • Stainless Steel grade A4.

 

Advantages Of Woodruff Keys

  • Removes the need of milling near shaft shoulders, which impacts on concentricity.  This is extremely crucial for high speed operations.
  • Can be accommodated on a tapered shaft, aligning by slight rotation in the seat.
  • Properly installed, the key can embed deeper into the shaft, preventing rollover

 

 

Woodruff Keys: BS 46 Part 1 (Imperial)

Key Number Width 'W' Height 'H' Diameter (d2 x 2)
203 1/16 0.166 - 0.171 3/8
204 1/16 0.198 - 0.203 1/2
303 3/32 0.166 – 0.171 3/8
304 3/32 0.198 – 0.203 1/2
305 3/32 0.245 – 0.250 5/8
403 1/8 0.166 – 0.171 3/8
404 1/8 0.198 – 0.203 1/2
405 1/8 0.245 – 0.250 5/8
406 1/8 0.308 – 0.313 3/4
505 5/32 0.245 – 0.250 5/8
506 5/32 0.308 – 0.313 3/4
507 5/32 0.370 – 0.375 7/8
606 3/16 0.308 – 0.313 3/4
607 3/16 0.370 – 0.375 7/8
608 3/16 0.433 – 0.438 1
609 3/16 0.479 – 0.484 1 1/8
807 1.4 0.370 – 0.375 7/8
808 1/4 0.433 – 0.438
809 1/4 0.479 – 0.484 1 1/8
810 1/4 0.542 – 0.547 1 1/4
812 1/4 0.636 – 0.641 1 1/2
1008 5/16 0.433 – 0.438 1
1009 5/16 0.479 – 0.484 1 1/8
1010 5/16 0.542 – 0.547 1 1/4
1011 5/16 0.589 – 0.594 1 3/8
1012 5/16 0.636 – 0.641 1 1/2
1210 3/8 0.542 – 0.547 1 1/4
1211 3/8 0.589 – 0.594 1 3/8
1212

3/8

0.636 – 0.641 1 1/2

 

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