Our QHC Holders are high-performance coolant holders designed for use with our single point tools. Made from heat-treated steel, each holder features four lock-down screws for superior rigidity and stability. Engineered for maximum coolant delivery, QHC Holders have strategically placed coolant holes that direct flow right to the cutting edge—boosting tool life and chip evacuation. The inch-style holders include two flats on the shank for secure mounting and alignment, and optional backstops are available for added setup control.

A technical drawing of a QHC Tool Holder - Inch manufactured by Scientific Cutting Tools

QHC Holders - Inch

A (Inside Diameter)S (Shank Diameter)H (Head Diameter)NPT ThreadOALTool #EDP #
0.12500.3750.5001/16-27NPT2.50QHC37-1/8200252
0.15620.3750.5001/16-27NPT2.50QHC37-5/32200258
0.18750.3750.5001/16-27NPT2.50QHC37-3/16200255
0.12500.5000.6251/8-27NPT2.75QHC50-1/8200267
0.18750.5000.6251/8-27NPT2.75QHC50-3/16200270
0.25000.5000.6251/8-27NPT2.75QHC50-1/4200264
0.12500.6250.7501/4-18NPT3.25QHC62-1/8200279
0.15620.6250.7501/4-18NPT3.25QHC62-5/32200285
0.18750.6250.7501/4-18NPT3.25QHC62-3/16200282
0.21870.6250.7501/4-18NPT3.25QHC62-7/32200288
0.25000.6250.7501/4-18NPT3.25QHC62-1/4200276
0.12500.7500.8653/8-18NPT3.25QHC75-1/8200297
0.15620.7500.8653/8-18NPT3.25QHC75-5/32200309
0.18750.7500.8653/8-18NPT3.25QHC75-3/16200300
0.21870.7500.8653/8-18NPT3.25QHC75-7/32200312
0.25000.7500.8653/8-18NPT3.25QHC75-1/4200294
0.31250.7500.8653/8-18NPT3.25QHC75-5/16200306
0.37500.7500.8653/8-18NPT3.25QHC75-3/8200303
0.12501.0001.1151/2-14NPT3.25QHC10-1/8200207
0.18751.0001.1151/2-14NPT3.25QHC10-3/16200210
0.25001.0001.1151/2-14NPT3.25QHC10-1/4200204
0.31251.0001.1151/2-14NPT3.25QHC10-5/16200216
0.37501.0001.1151/2-14NPT3.25QHC10-3/8200213
0.50001.0001.1151/2-14NPT3.25QHC10-1/2200201