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Busch Twist Drills, Fig. 77 (Pkg. of 6)
Busch Twist Drills, Fig. 77 (Pkg. of 6)


 
Made of tungsten vanadium steel with 3/32" shanks. Also available in a Set of 12 popular sizes, return to "Twist Drills".

Individual sizes packaged 6 to a box.

Diameter
(mm)		 Diameter
(inches)
0.50 0.0197
0.60 0.0236
0.70 0.0276
0.80 0.0315
0.90 0.0354
1.00 0.0393
1.10 0.0433
1.20 0.0472
1.40 0.0551
1.50 0.0591
1.60 0.0630
1.70 0.0669
1.80 0.0709
1.90 0.0748
2.10 0.0827
2.30 0.0906


Item# Item Name Our Price Qty Add
122-7005 Busch Twist Drills, Fig. 77 - 0.50mm (Pkg. of 6)
$21.89
122-7006 Busch Twist Drills, Fig. 77 - 0.60mm (Pkg. of 6)
$21.89
122-7007 Busch Twist Drills, Fig. 77 - 0.70mm (Pkg. of 6)
$21.89
122-7008 Busch Twist Drills, Fig. 77 - 0.80mm (Pkg. of 6)
$21.89
122-7009 Busch Twist Drills, Fig. 77 - 0.90mm (Pkg. of 6)
$21.89
122-7010 Busch Twist Drills, Fig. 77 - 1.00mm (Pkg. of 6)
$21.89
122-7011 Busch Twist Drills, Fig. 77 - 1.10mm (Pkg. of 6)
$21.89
122-7012 Busch Twist Drills, Fig. 77 - 1.20mm (Pkg. of 6)
$21.89
122-7014 Busch Twist Drills, Fig. 77 - 1.40mm (Pkg. of 6)
$21.89
122-7015 Busch Twist Drills, Fig. 77 - 1.50mm (Pkg. of 6)
$21.89
122-7016 Busch Twist Drills, Fig. 77 - 1.60mm (Pkg. of 6)
$21.89
122-7017 Busch Twist Drills, Fig. 77 - 1.70mm (Pkg. of 6)
$21.89
122-7018 Busch Twist Drills, Fig. 77 - 1.80mm (Pkg. of 6)
$21.89
122-7019 Busch Twist Drills, Fig. 77 - 1.90mm (Pkg. of 6)
$21.89
122-7021 Busch Twist Drills, Fig. 77 - 2.10mm (Pkg. of 6)
$21.89
122-7023 Busch Twist Drills, Fig. 77 - 2.30mm (Pkg. of 6)
$21.89
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Instructions:
B&S
Gauge		 Millimeter
(mm) 		Inch
(decimal)		 Inch
(fraction)
1 7.348 0.289 —
2 6.543 0.258 —
— 6.350 0.250 1/4
— 5.953 0.234 15/64
3 5.827 0.229 —
— 5.556 0.219 7/32
4 5.189 0.204 —
— 5.154 0.203 13/64
— 4.762 0.188 3/16
5 4.621 0.182 —
— 4.366 0.172 11/64
6 4.115 0.162 —
— 3.969 0.156 5/32
7 3.664 0.144 —
— 3.572 0.141 9/64
8 3.263 0.128 —
— 3.175 0.125 1/8
9 2.906 0.114 —
— 2.778 0.109 7/64
10 2.588 0.102 —
— 2.381 0.094 3/32
11 2.304 0.091 —
12 2.052 0.081 —
— 1.984 0.078 5/64
13 1.828 0.072 —
14 1.628 0.064 —
— 1.588 0.063 1/16
15 1.449 0.057 —
16 1.291 0.051 —
— 1.191 0.047 3/64
17 1.149 0.045 —
18 1.024 0.040 —
19 0.912 0.036 —
20 0.812 0.032 —
— 0.795 0.031 1/32
21 0.723 0.028 —
22 0.644 0.025 —
23 0.573 0.023 —
24 0.511 0.020 —
25 0.455 0.018 —
26 0.405 0.016 —
— 0.396 0.015 1/64
27 0.360 0.014 —
28 0.321 0.013 —
29 0.286 0.011 —
30 0.255 0.010 —
31 0.227 0.0089 —
32 0.202 0.0080 —
33 0.180 0.0071 —
34 0.160 0.0063 —
35 0.142 0.0056 —
36 0.127 0.0050 —
37 0.113 0.0045 —
38 0.101 0.0040 —
39 0.090 0.0035 —
40 0.080 0.0031 —
B&S
Gauge		 Millimeter
(mm) 		Inch
(decimal)		 Inch
(fraction)
It happens to everyone, a drill bit breaks and the business end is stuck inside the hole in your precious metal jewellery. If you can't reach it, how will you get it out? Place the ring into common Pickling Solution. The drill bit will dissolve in about 15 minutes.
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