1. name: hss straight shank twist drill bits 2. process: roll forged 3. surface finishing: black oxide

4. size: 0.2mm - 20mm

5. available material:  M2, M35, M42, 9341, 4341, 4241, etc.

6. available hardness: HSS HRC63-66; HSSCo HRC64-68

7. available point angle: σ=118°; σ=135°

                          point angle

8. marking: a. diameter; b. material (HSS, HSSCo); c. name or mark of manufatcturer; etc.

9. conventional web thinning

          without thinning

          Type C thinning (DIN1412 FORM C, SPLIT POINT) 

10. conventional surface finishing

a. black shank with amber edge

b. bright

c. Titanium coated

d. black oxide

e. amber shank with black flutes

f. amber

g. bright shank with black flutes

 

NOTE: Our company can supply most kinds of drill bits, such as hss straight shank twist dirll bit, hss reduced shank twist drill bit, Taper shank twist drill bit, hss hex shank twist drill drill bit, twist drill bit set, electric hammer masonry drill bits (including sds plus bit, sds max bit), spline shank hammer drill bit, straight shank masonry drill bit, wood working drill bit and so on. 

HSS Straight Shank Twist Drill (roll forged)