Precision PC Spring Collets for Porter-Cable Routers
(compatible with Porter-Cable 690, 690LR, 9690LR, 691, 693, 890, 891, 892, 893, 7518, 7519, 7536, 7537, 7538, 7539 routers)
Specifications:
- Steel - SUJ 2
- H.R.C. 45-52
- Surface Roughness - Ra 0.5 um
- Internal hole by boring machine
- SG (standard grade) TIR < 0.015 mm (0.0006")
- PG (precision grade) TIR < 0.01 mm (0.0004")
- UP (ultra-precision grade) TIR < 0.005 mm (0.0002")
- Degree of concentricity exceeds the DIN standard. 100% examined
- must be used with InGraph PCPG nuts and spanners
- Country of Origin - USA
Benefits:
- Low noise operation
- Longer tool life
- More accurate cutting and higher kerf fidelity
- Compatible with carbide microtools
- Low TIR means less wear and tear on spindle bearings

