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Besly
Screw Machine
Twist Drills

High Speed Steel
Straight Shank
Bright Finish &
Surface Treated

Wire Gage Sizes:
60-50 | 49-40 | 39-30 |
29-20 | 19-10 | 9-1

Letter Sizes:
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Fractional Sizes:
3/64 | 1/16 | 5/64 | 3/32 | 7/64 | 1/8 | 9/64 | 5/32 | 11/64 | 3/16 | 13/64 | 7/32 | 15/64 | 1/4 | 17/64 | 9/32 | 19/64 | 5/16 | 21/64 | 11/32 | 23/64 | 3/8 | 25/64 | 13/32 | 27/64 | 7/16 | 29/64 | 15/32 | 31/64 | 1/2 | 33/64 | 17/32 | 35/64 | 9/16 | 37/64 | 19/32 | 39/64 | 5/8 | 41/64 | 21/32 | 43/64 | 11/16 | 45/64 | 23/32 | 47/64 | 3/4 | 49/64 | 25/32 | 51/64 | 13/16 | 53/64 | 27/32 | 55/64 | 7/8 | 57/64 | 29/32 | 59/64 | 15/16 | 61/64 | 31/32 | 63/64 | 1 | 1-1/16 | 1-1/8 | 1-3/16 | 1-1/4 | 1-5/16 | 1-3/8 | 1-7/16 | 1-1/2 | 1-9/16 | 1-5/8 | 1-11/16 | 1-3/4 | 1-13/16 | 1-7/8 | 1-15/16 | 2

 Catalog Numbers: T-122


Besly Jobbers Length General Purpose Twist Drills
 

Designed for use on automatic screw machines, these drills have short flutes and short overall length to provide economy and maximum rigidity without sacrificing cutting ability. Sizes over 1" furnished with reduced shanks. Sizes larger than 1/2" are surface treated.

Please call 800 435-2965 for current net pricing.

Note: Click the EDP No to check availability.
 

 
All dimensions are in inches.
  Besly Screw Machine
Twist Drills
Catl No. T-122
 Wire Gage Sizes		  
 
   
Wire Gage
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
60 .0400 26311 12 1-3/8 1/2
59 .0410 26310 12 1-3/8 1/2
58 .0420 26305 12 1-3/8 1/2
57 .0430 26304 12 1-3/8 1/2
56 .0465 26303 12 1-3/8 1/2
55 .0520 26302 12 1-5/8 5/8
54 .0550 26301 12 1-5/8 5/8
53 .0595 26300 12 1-5/8 5/8
52 .0635 26295 12 1-11/16 11/16
51 .0670 26294 12 1-11/16 11/16
50 .0700 26293 12 1-11/16 11/16
49 .0730 26292 12 1-11/16 11/16
48 .0760 26291 12 1-11/16 11/16
47 .0785 26290 12 1-3/4 3/4
46 .0810 26285 12 1-3/4 3/4
45 .0820 26284 12 1-3/4 3/4
44 .0860 26283 12 1-3/4 3/4
43 .0890 26282 12 1-3/4 3/4
42 .0935 26281 12 1-3/4 3/4
41 .0960 26280 12 1-13/16 3/16
40 .0980 26275 12 1-13/16 3/16
  Go to the top of the page.
Wire Gage
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
39 .0995 26274 12 1-13/16 13/16
38 .1015 26273 12 1-13/16 13/16
37 .1040 26272 12 1-13/16 13/16
36 .1065 26271 12 1-13/16 13/16
35 .1100 26270 12 1-7/8 7/8
34 .1110 26265 12 1-7/8 7/8
33 .1130 26264 12 1-7/8 17/8
32 .1160 26263 12 1-7/8 7/8
31 .1200 26262 12 1-7/8 7/8
30 .1285 26261 12 1-15/16 15/16
29 .1360 26260 12 1-15/16 15/16
28 .1405 26255 12 1-15/16 15/16
27 .1440 26254 12 2-1/16 1
26 .1470 26253 12 2-1/16 1
25 .1495 26252 12 2-1/16 1
24 .1520 26251 12 2-1/16 1
23 .1540 26250 12 2-1/16 1
22 .1570 26245 12 2-1/8 1-1/16
21 .1590 26244 12 2-1/8 1-1/16
20 .1610 26243 12 2-1/8 1-1/16
  Go to the top of the page.
Wire Gage
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
19 .1660 26242 12 2-1/8 1-1/16
18 .1695 26241 12 2-1/8 1-1/16
17 .1730 26240 12 2-3/16 1-1/8
16 .1770 26235 12 2-3/16 1-1/8
15 .1800 26234 12 2-3/16 1-1/8
14 .1820 26233 12 2-3/16 1-1/8
13 .1850 26232 12 2-3/16 1-1/8
12 .1890 26231 12 2-1/4 1-3/16
11 .1910 26230 12 2-1/4 1-3/16
10 .1935 26225 12 2-1/4 1-3/16
9 .1960 26224 12 2-1/4 1-3/16
8 .1990 26223 12 2-1/4 1-3/16
7 .2010 26222 12 2-1/4 1-3/16
6 .2040 26221 12 2-3/8 1-1/4
5 .2055 26220 12 2-3/8 1-1/4
4 .2090 26215 12 2-3/8 1-1/4
3 .2130 26214 12 2-3/8 1-1/4
2 .2210 26213 12 2-7/16 1-5/16
1 .2280 26212 12 2-7/16 1-5/16
  Go to the top of the page.
 

 
All dimensions are in inches.
  Besly Screw Machine
Twist Drills
Catl No. T-122
 Letter Sizes		  
 
   
Letter
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
A .2340 26622 12 2-7/16 1-5/16
B .2380 26623 12 2-1/2 1-3/8
C .2420 26624 12 2-1/2 1-3/8
D .2460 26625 12 2-1/2 1-3/8
E .2500 26501 12 2-1/2 1-3/8
F .2570 26631 12 2-5/8 1-7/16
G .2610 26632 12 2-5/8 1-7/16
H .2660 26633 12 2-11/16 1-1/2
I .2720 26634 12 2-11/16 1-1/2
J .2770 26635 12 2-11/16 1-1/2
K .2810 26640 12 2-11/16 1-1/2
L .2900 26641 12 2-3/4 1-9/16
M .2950 26642 6 2-3/4 1-9/16
N .3020 26643 6 2-13/16 1-5/8
O .3160 26644 6 2-15/16 1-11/16
P .3230 26645 6 2-15/16 1-11/16
Q .3320 26650 6 3 1-11/16
R .3390 26651 6 3 1-11/16
S .3480 26652 6 3-1/16 1-3/4
T .3580 26653 6 3-1/16 1-3/4
U .3680 26654 6 3-1/8 1-13/16
V .3770 26655 6 3-1/4 1-7/8
W .3860 26660 6 3-1/4 1-7/8
X .3970 26661 6 3-5/16 1-15/16
Y .4040 26662 6 3-5/16 1-15/16
Z .4130 26663 6 3-5/16 2
  Go to the top of the page.
 

 
All dimensions are in inches.
  Besly Screw Machine
Twist Drills
Catl No. T-122
 Fractional Sizes		  
 
   
Fractional
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
3/64 .0469 26480 12 1-3/8 1/2
1/16 .0625 26481 12 1-5/8 5/8
5/64 .0781 26482 12 1-11/16 11/16
3/32 .0938 26483 12 1-3/4 3/4
7/64 .1094 26484 12 1-13/16 13/16
1/8 .1250 26485 12 1-7/8 7/8
9/64 .1406 26490 12 1-15/16 15/16
5/32 .1562 26491 12 2-1/16 1
11/64 .1719 26492 12 2-1/8 1-1/16
3/16 .1875 26493 12 2-3/16 1-1/8
13/64 .2031 26494 12 2-1/4 1-3/16
7/32 .2188 26495 12 2-3/8 1-1/4
15/64 .2344 26500 12 2-7/16 1-5/16
1/4 .2500 26501 12 2-1/2 1-3/8
17/64 .2656 26502 12 2-5/8 1-7/16
9/32 .2812 26503 12 2-11/16 1-1/2
19/64 .2969 26504 6 2-3/4 1-9/16
5/16 .3125 26505 6 2-13/16 1-5/8
21/64 .3281 26510 6 2-15/16 1-11/16
11/32 .3438 26511 6 3 1-11/16
23/64 .3594 26512 6 3-1/16 1-3/4
  Go to the top of the page.
Fractional
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B
3/8 .3750 26513 6 3-1/8 1-13/16
25/64 .3906 26514 6 3-1/4 1-7/8
13/32 .4062 26515 6 3-5/16 1-15/16
27/64 .4219 26520 6 3-3/8 2
7/16 .4375 26521 6 3-7/16 2-1/16
29/64 .4531 26522 6 3-9/16 2-1/8
15/32 .4688 26523 6 3-5/8 2-1/8
31/64 .4844 26524 6 3-11/16 2-3/16
1/2 .5000 26525 6 3-3/4 2-1/4
33/64 .5156 26710 1 3-7/8 2-3/8
17/32 .5312 26711 1 3-7/8 2-3/8
35/64 .5469 26712 1 4 2-1/2
9/16 .5625 26713 1 4 2-1/2
37/64 .5781 26714 1 4-1/8 2-5/8
19/32 .5938 26715 1 4-1/8 2-5/8
39/64 .6094 26720 1 4-1/4 2-3/4
5/8 .6250 26721 1 4-1/4 2-3/4
41/64 .6406 26722 1 4-1/2 2-7/8
21/32 .6562 26723 1 4-1/2 2-7/8
43/64 .6719 26724 1 4-5/8 2-7/8
11/16 .6875 26725 1 4-5/8 2-7/8
45/64 .7031 26730 1 4-3/4 3
23/32 .7188 26731 1 4-3/4 3
47/64 .7344 26732 1 5 3-1/8
  Go to the top of the page.
Fractional
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
ength
B
3/4 .7500 26733 1 5 3-1/8
49/64 .7656 26734 1 5-1/8 3-1/4
25/32 .7812 26735 1 5-1/8 3-1/4
51/64 .7969 26740 1 5-1/4 3-3/8
13/16 .8125 26741 1 5-1/4 3-3/8
53/64 .8281 26742 1 5-3/8 3-1/2
27/32 .8438 26743 1 5-3/8 3-1/2
55/64 .8594 26744 1 5-1/2 3-1/2
7/8 .8750 26745 1 5-1/2 3-1/2
57/64 .8906 26750 1 5-5/8 3-5/8
29/32 .9062 26751 1 5-5/8 3-5/8
59/64 .9219 26752 1 5-3/4 3-3/4
15/16 .9375 26753 1 5-3/4 3-3/4
61/64 .9531 26754 1 5-7/8 3-7/8
31/32 .9688 26755 1 5-7/8 3-7/8
63/64 .9844 26760 1 6 4
1 1.000 26761 1 6 4
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All dimensions are in inches.
  Besly Screw Machine
Twist Drills
Catl No. T-122
 Fractional Sizes
 
     
Fractional
Size		 Decimal
Equivalent		 EDP No Pkg Qty Overall
Length
A		 Flute
Length
B		 Shank
Diameter
C		 Shank
Length
D
1-1/16 1.0625 26762 1 6-1/4 4 1 2-1/4
1-1/8 1.1250 26763 1 6-3/8 4 1 2-1/4
1-3/16 1.1875 26764 1 6-5/8 4-1/4 1 2-1/4
1-1/4 1.2500 26765 1 6-3/4 4-3/8 1 2-1/4
1-5/16 1.3125 26770 1 7 4-3/8 1-1/4 2-1/2
1-3/8 1.3750 26771 1 7-1/8 4-1/2 1-1/4 2-1/2
1-7/16 1.4375 26772 1 7-3/8 4-3/4 1-1/4 2-1/2
1-1/2 1.5000 26773 1 7-1/2 4-7/8 1-1/4 2-1/2
1-9/16 1.5625 26774 1 7-3/4 4-7/8 1-1/2 2-3/4
1-5/8 1.6250 26775 1 7-3/4 4-7/8 1-1/2 2-3/4
1-11/16 1.6875 26780 1 8 5-1/8 1-1/2 2-3/4
1-3/4 1.7500 26781 1 8 5-1/8 1-1/2 2-3/4
1-13/16 1.8125 26782 1 8-1/4 5-3/8 1-1/2 2-3/4
1-7/8 1.8750 26783 1 8-1/4 5-3/8 1-1/2 2-3/4
1-15/16 1.9375 26784 1 8-1/2 5-5/8 1-1/2 2-3/4
2 2.0000 26785 1 8-1/2 5-5/8 1-1/2 2-3/4
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