D Style 55 Degree Diamond Shape
This guideline should be taken only as a general rule of thumb - Of coarse there are always exceptions to the standard{s} the industry has designated.
"D" Style Carbide Insert = Diamond shaped insert with a 55 Degree Nose Angle, traditionally used in some form of a boring or turning application.DNMA-432 Borazon Insert Sumitomo Grade BN250 Turning-Boring Insert (Borazon Boring Turning Insert)
Boring/Turning Insert. Hardened Steels
DNMA-432 Borazon Insert Sumitomo Grade BN300 Turning-Boring Insert (Borazon Boring Turning Insert)
Boring/Turning Insert. Hardened Steels
DNMA-433 Borazon Insert Sumitomo Grade BNX20 Turning-Boring Insert (Borazon Boring Turning Insert)
Boring/Turning Insert. Hardened Steels