Knurling Wheel - 1/4″ Hole Dia., 3/4″ Knurl Dia., 3/8″ Width (14 TPI) - Series KP BT 30 DA Series Collet Chucks 024 *Bore Diameter: 5/16 *Brand

024 *Bore Diameter: 5/16 *Brand Name: Briney *Gage Length: 4

Mfg #: L40145B

Item #: 94870383

They are 7 to 10 threads

4780 *Dimensions - Height: 3

Knurling Wheel - 1/4″ Hole Dia., 3/4″ Knurl Dia., 3/8″ Width (14 TPI) - Series KP BT 30 DA Series Collet Chucks 024 *Bore Diameter: 5/16 *BrandItem #: SE40KPS214 Brand: Generic USA Model #: SE40KPS214 Product Specifications Arbore Hole Diameter 1 4 Threads per Inch (TPI) 14 Outer Diameter 3 4 Angle 90 Degrees Material HSS Tool Type Knurling Wheel KP Pitch Circular PackSize 1 Style Straight Remarks Circular Pitch Knurls 30 Spiral Knurls 
KP Series Circular Pitch Knurls
The circular Pitch Knurl System is the older system and has been in use many years. The spacing of the teeth