HSS twist drill bits, Roll forged and Edge ground type

Roll forged HSS Twist drill bits

Des: HSS twist drill ,roll forged with black oxide/black & bright.If need other surface please cousult with us.118 degree point and 135 degree with split point both are available.

Usage: ideal for drilling on mild steel ,copper, Aluminum, Zinc alloy etc.

Material: HSS

WD10190

  • 19pcs HSS twist drill bits set
  • Spec: (1-10)x0.5mm
  • Finish: Black oxide
  • Packing: Plastic box packing

WD10130

  • 13pcs HSS twist drill bits set
  • Spec: (1.5-6.5)x0.5mm+3.2mm+4.8mm
  • Finish: Black oxide
  • Packing: Plastic box packing

Edge ground HSS Twist drill bits

Des: HSS edge ground drill bits, Tin coating or bright finsih. other surface treatment is available wit request. 118 degree point and 135 degree with split point both are available.

Usage: ideal for drilling on mild steel ,copper, Aluminum, Zinc alloy etc.

Material: HSS

WD12190

  • 19pcs HSS twist drill bits set
  • Spec: (1-10)x0.5mm
  • Finish: Titanium coating
  • Packing: Plastic box

WD11250

  • 25pcs HSS twist drill bits set
  • Spec: (1-13)x0.5mm
  • Finish: Bright
  • Packing: Plastic box
DIN 338 standard
D(mm) L1(mm) L(mm)
1 12 34
1.5 20 43
2 24 49
2.5 30 57
3 33 61
3.2 36 65
3.2 36 65
3.2 36 65
3.2 36 65
3.5 39 70
4 43 75
4.2 43 75
4.5 47 80
4.8 52 86
5 52 86
5.5 57 93
6 57 93
6.5 63 101
7 69 109
7.5 69 109
8 75 117
8.5 75 117
9 81 125
9.5 81 125
10 87 133
10.5 87 133
11 94 142
11.5 94 142
12 101 151
12.5 101 151
13 101 151
ANSI B94.11 JOBERR LENGTH
D(inch) L1(inch) L(inch)
1/16 7/8 1-7/8
5/64 1 2
3/32 1-1/4 2-1/4
7/64 1-1/2 2-5/8
1/8 1-5/8 2-3/4
9/64 1-3/4 2-7/8
5/32 2 3-1/8
11/64 2-1/8 3-1/4
3/16 2-5/16 3-1/2
13/64 2-7/16 3-5/8
7/32 2-1/2 3-3/4
15/64 2-5/8 3-3/7
1/4 2-3/4 4
17/64 2-7/8 4-1/8
9/32 2-15/16 4-1/4
19/64 3-1/16 4-3/8
5/16 3-3/16 4-1/2
21/64 3-5/16 4-3/4
11/32 3-7/16 4-5/8
23/64 3-1/2 4-7/8
3/8 3-5/8 5
25/64 3-3/4 5-1/8
13/32 3-7/8 5-1/4
27/64 3-15/16 5-3/8
7/16 4-1/16 5-1/2
29/64 4-3/16 5-5/8
15/32 4-5/16 5-3/4
31/64 4-3/8 5-7/8
1/2 4-1/2 6