Core Bit Adapters for adapting different size threads to different machines

Standard core drill adapters have the following threaded hub sizes:

  • 1-1/2" and under (bit diameter)= 5/8"-11 thread
  • (5/8" diameter, 11 threads per inch)
  • 1-5/8" and up (bit diameter) = 1-250"-7 thread
  • (1-1/4" diameter, 7 threads per inch)
  • * Male bottom thread is a replaceable grade 8, 5/8"-11 bolt with water way ∞ These threaded drill bit adapters are for use on Weka motors
1.250"-7 Female 5/8"-11 1015 4400008 01878
1.250"-7 Female 5/8"-11 Bolt * 1015-B 4400162 47697
5/8"-11 Female 1.250"-7 1510 4400009 01880
1.250"-7 Female 5/8"-18 1016 4400010 01881
1/2"-20 Female 5/8"-11 1020 4400011 01882
1.250"-7 Female 1.250"-12 DK13-DVH 4400320 75698
Bantum Female 5/8"-11 Bantum-15 4400012 01883
Bantum Female 1.250"-7 Bantum-15 4400051 01911
#2 Morse Taper Male 5/8"-11 Morse #2 4400068 01920
#3 Morse Taper Male 5/8"-11 Morse #3 4400061 01917
#4 Morse Taper Male 5/8"-11 Morse #4 4400062 01918
#5 Morse Taper Male 5/8"-11 Morse #5 4400063 79291
3/8" Straight Shank Male 5/8"-11 3/8" S.S. 4400056 01913
1/2" Straight Shank Male 5/8"-11 1/2" S.S. 4400033 01899
5/8" Straight Shank Male 5/8"-11 5/8" S.S. 4400087 01936
1/2" BSP Male 5/8"-11 1/2" British standard piping∞ 4400037 01905
1/2" BSP Male 1.250"-7 1/2" British standard piping∞ 4400036 01903
1.875"-7 Female 1.250"-7 Large thread reducer 4400121 01949
1.250"-7 Female 1.875"-7 Large thread adapter 4400134 01956