Cast Iron Calibration Weights - Slotted Interlocking and Hanger Weights

As of: Friday, May 23, 2025
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Standard Features

  • Slotted weights and hangers for suspended weighing 
  • Nominal value marked on weight
  • Weight capacities of 10 kg/20 lb and up meet NIST Handbook 105-1 and Handbook 44 specifications
  • Metric weights designated by gold paint
  • Avoirdupois weights (pound) designated by silver paint
  • Serial numbers may be stamped on weights (optional)

Our cast iron weights undergo a special phosphatizing process in which the metal is thoroughly cleaned and mildly etched to allow exceptional finish adhesion. The weights are then coated with a layer of chip-resistant paint which conforms to NIST Handbook 105-1 standards. This two-step process ensures a long-lasting finish that greatly reduces the possibility of corrosion. 

Classes Available:

  • ASTM Class 6 and 7

Applications:

  • Field standards for testing industrial devices Class III, Class IIlL or IIII
  • Testing for non-marked scales without Class designation
  • Verifying scales are within specified accuracy and tolerances

Parts

Part # Description
ASTM Class 6 Avoirdupois Slotted
40828 Weight,Slotted Interlocking 100lb 17Dia x 1-15/16H x 1 Slot Width ASTM Class 6 Cast Iron Painted
12856 Weight,Slotted Interlocking 50lb 10-1/2Dia x 2-1/2H x 9/16 Slot Width ASTM Class 6 Cast Iron Painted
12831 Weight,Slotted Interlocking 20lb 8-1/8Dia x 1-7/8H x 3/4 Slot Width ASTM Class 6 Cast Iron Painted
ASTM Class 7 Avoirdupois Slotted
12826 Weight,Slotted Interlocking 10lb 6-1/8Dia x 1-9/16H x 3/4 Slot Width ASTM Class 7 Cast Iron Painted
12852 Weight,Slotted Interlocking 5lb 5-1/8Dia x 1-1/4H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12848 Weight,Slotted Interlocking 2lb 5Dia x 3/4H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12842 Weight,Slotted Interlocking 1lb 5Dia x 7/16H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12837 Weight,Slotted Interlocking 1/2lb 3-3/4Dia x 7/16H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
ASTM Class 7 Avoirdupois Hanger
12846 Weight,Hanger 5lb SST 4.0 DIA x 37-1/4 H 500lb CAP ASTM Class 7
12841 Weight Hanger,2lb 21-3/8 Long 200lb Cap ASTM Class 7 Cast Iron Painted
12835 Weight,Hanger 2lb 3-13/16 Dia Bottom x 10-1/4H 200lb Cap ASTM Class 7 Cast Iron Painted
12830 Weight Hanger,1lb 22 Long 200lb Cap ASTM Class 7 Cast Iron Painted
12825 Weight Hanger,1lb 9-5/16 in Long 200lb Cap ASTM Class 7 Cast Iron Painted
ASTM Class 6 Metric Slotted
12819 Weight,Slotted Interlocking 20kg 10-13/32Dia x 2-5/16H x 9/16 Slot Width ASTM Class 6 Cast Iron Painted
12811 Weight,Slotted Interlocking 10kg 8-3/16Dia x 2H x 3/4 Slot Width ASTM Class 6 Cast Iron Painted
ASTM Class 7 Metric Slotted
12807 Weight,Slotted Interlocking 5kg 6-5/32Dia x 1-25/32H x 3/4 Slot Width ASTM Class 7 Cast Iron Painted
12799 Weight,Slotted Interlocking 2kg 5-1/8Dia x 1-5/32H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12795 Weight,Slotted Interlocking 1kg 5-1/16Dia x 3/4H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12791 Weight,Slotted Interlocking 500g 5Dia x 1/2H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
12780 Weight,Slotted Interlocking 200g 3-3/4Dia x 5/16H x 9/16 Slot Width ASTM Class 7 Cast Iron Painted
ASTM Class 7 Metric Hanger
12788 Weight,Hanger 2kg SST 4.0 DIA x 37-1/4 H 250kg CAP ASTM Class 7
12784 Weight,Hanger 1kg 3-13/16Dia x 21-3/8H 100kg Cap ASTM Class 7 Cast Iron
12777 Weight,Hanger 1kg 3-13/16Dia x 10-1/4H 100kg Cap ASTM Class 7 Cast Iron Painted
12773 Weight,Hanger 500g 3-11/16 Dia x 22H 100kg Cap ASTM Class 7 Cast Iron Painted
12769 Weight,Hanger 500g 3-11/16 Dia x 9-1/2H 100kg Cap ASTM Class 7 Cast Iron Painted

Options

Part # Description
Accessories
36092 Form,Statement of Accuracy
25836 Serial Number

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