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WD11130-13pcs half ground twis ...
WD11130-13pcs half ground twist drill bits set
WD99Inch Drill Bits Set
WD99Inch Drill Bits Set

Half ground HSS Twist drill bits

  1. 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.

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

  3. Material: HSS
WD12190

  1. 19pcs HSS twist drill bits set

  2. Spec: (1-10)x0.5mm

  3. Finish: Titanium coating

  4. Packing: Plastic box packing

WD11250
  1. 25pcs HSS twist drill bits set
  2. Spec: (1-13)x0.5mm
  3. Finish: Bright
  4. Packing: Plastic box packing
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