HSS twist drill bits, HSS-Co 5 fully ground

Fully ground HSSCo drill bits

Des: HSSCo fully ground twist drill bits,118 degree point and 135 degree with split point both are available.

Usage: Powerful right-hand cutting high-performance drill bits with distinctive heat resistance and reinforced drill core. Ideal for drilling high-strength stainless, acid-resistant and heat-resistant steel

Material: HSSCo

WD13250

  • 25PCS HSS Twist drill bits set cobalt drills
  • Spec.: （1-13）x0.5mm
  • Finish: Amber surface
  • Packing: plastic box

WD13190

  • 19PCS HSS Twist drill bits set cobalt drills
  • Spec: (1-10)x0.5mm
  • Finish: Amber surface
  • Packing: Robust Metal 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