China HSS Double End Drill Bits

HSS Double End Drill Bits
Product Description:
1. HSS Twist Drill Bits, Double Ended
2. Fully Ground
3. 4341, 9341, M2, M35, M42
4. 3.0mm-6.5mm
5. White, TIN Coated, Rainbow Color, Bright, Black & Bright, Zirconium Coating, Black, Coffee Color, etc.
6. 118 degree; Or 135 degree
Hardened high speed steel body provides additional safeguard.
Industrial grade cobalt high speed steel are available on request.
Double End Stub Drills are fluted and split pointed on both ends and have a solid center shank for chucking. They will drill twice as many holds as a Single End Drill for only a fraction more in cost. When one end gets dull or breaks, it can be quickly reversed in drill chuck to reduce change-over time, overall costs, and inventory.
135 degree split point for quick start and no walk application.
118 degree point angle design for general purpose are available on request.
Bright finish or Black oxide finish; Tin Coated are available on request.
For drilling in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic.

Dia.Working LengthOverall Length28382.51043311463.211493.51452414554.51758517625.51966619666.52270
Dia.Working LengthOverall Length1/163/81-1/25/643/81-1/23/323/81-11/167/641/21-13/161/81/21-13/169/645/82-1/165/325/82-3/163/165/82-5/167/323/42-5/81/43/42-7/8#75/82-5/16#115/82-5/16#205/82-3/16#265/82-1/16#275/82-1/16#301/21-13/16