From old stock. Had some rust and staining and I cleaned it up a bit. Has never been on a machine.
Buyer will receive the sprocket shown

      • 40 Chain Number
      • 1 Strand
      • 19 Teeth
      • Without Hardened Teeth
      • B Sprocket Style

DESCRIPTION

      • Maximum bores shown will accommodate standard keyseat and setscrew over keyseat. Slightly larger bores are possible with no keyseat, shallow keyseat, or setscrew at an angle to keyseat.

FEATURES

      • Tolerances meet or exceed ANSI standards
      • Manufactured of high carbon steel
      • Precise machining and processes ensure consistent finish and high quality
      • Bores are concentric to pitch line, minimizing run out

SPECIFICATIONS

    • BORE STYLE Minimum Bore
      NO. OF STRANDS ACROSS 1
      INCH/METRIC Inch
      CONSTRUCTION Solid
      BORE RANGE [MIN] 5/8 in
      OUTSIDE DIA. [MIN] 3.3000 in
      HUB DIA. 2 1/2 in
      HARDENED TEETH Without Hardened Teeth
      CALIPER DIAMETER 2.72 in
      NO. OF TEETH 19
      MATERIAL Steel
      HUB LENGTH THRU 0.716 in
      BORE RANGE [MAX] 1 3/4 in
      BORE TYPE Reborable
      PITCH DIAMETER [MIN] 3.040 in
      SERIES B
      WIDTH ACROSS TEETH 0.28 in
      CHAIN PITCH 1/2 in
      PITCH DIAMETER 3.040 in
      KEYWAY No Keyway or Setscrew
      OUTSIDE DIA. 3.3000 in
      LENGTH THROUGH BORE 1 in
      SPROCKET STYLE B
      MARTIN NO. 40B19
      CHAIN NO. 40
      WEIGHT 1.43 LB
      EAN OR UPC 697950004648