Nitro Drill Bit
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Nitro Drill Bit

High Speed Steel Nitro drill bits offer superior performance over conventional HSS drills. Their Nitride treated, heavy-duty construction increases tool life and performance. 135 degree Split Point reduces walking at the drill point and makes these drills ideal for both hand held and CNC Operations. Black & Gold surface treatment for maximum lubricity. Usable in a wide range of materials including difficult to machine materials such as stainless steel. Jobber length for extra reach.

Fractional SizesNitro Drill Bit

Size Decimal
Equivalent
Flute
Length
Overall
Length
1/16 0.0625 7/8 1 7/8
5/64 0.0781 1 2
3/32 0.0938 1 1/4 2 1/4
7/64 0.1094 1 1/2 2 5/8
1/8 0.1250 1 5/8 2 3/4
9/64 0.1406 1 3/4 2 7/8
5/32 0.1563 2 3 1/8
11/64 0.1719 2 1/8 3 1/4
3/16 0.1875 2 5/16 3 1/2
13/64 0.2031 2 7/16 3 5/8
7/32 0.2188 2 1/2 3 3/4
15/64 0.2344 2 5/8 3 7/8
1/4 0.2500 2 3/4 4
17/64 0.2656 2 7/8 4 1/8
9/32 0.2813 2 15/16 4 1/4
19/64 0.2969 3 1/16 4 3/8
5/16 0.3125 3 3/16 4 1/2
21/64 0.3281 3 5/16 4 5/8
11/32 0.3438 3 7/16 4 3/4
23/64 0.3594 3 1/2 4 7/8
3/8 0.3750 3 5/8 5
25/64 0.3906 3 3/4 5 1/8
13/32 0.4063 3 7/8 5 1/4
27/64 0.4219 3 15/16 5 3/8
7/16 0.4375 4 1/16 5 1/2
29/64 0.4531 4 3/16 5 5/8
15/32 0.4688 4 5/16 5 3/4
31/64 0.4844 4 3/8 5 7/8
1/2 0.5000 4 1/2 6
  1. All dimensions are in inches.

Wire SizesNitro Drill Bit

Size Decimal
Equivalent
Flute
Length
Overall
Length
1 0.2280 2 5/8 3 7/8
2 0.2210 2 1/2 3 7/8
3 0.2130 2 1/2 3 3/4
4 0.2090 2 1/2 3 3/4
5 0.2055 2 1/2 3 3/4
6 0.2040 2 1/2 3 3/4
7 0.2010 2 7/16 3 5/8
8 0.1990 2 7/16 3 5/8
9 0.1960 2 7/16 3 5/8
10 0.1935 2 7/16 3 5/8
11 0.1910 2 5/16 3 1/2
12 0.1890 2 5/16 3 1/2
13 0.1850 2 5/16 3 1/2
14 0.1820 2 3/16 3 3/8
15 0.1800 2 3/16 3 3/8
16 0.1770 2 3/16 3 3/8
17 0.1730 2 3/16 3 3/8
18 0.1695 2 1/8 3 1/4
19 0.1660 2 1/8 3 1/4
20 0.1610 2 1/8 3 1/4
21 0.1590 2 1/8 3 1/4
22 0.1570 2 3 1/8
23 0.1540 2 3 1/8
24 0.1520 2 3 1/8
25 0.1495 1 7/8 3
26 0.1470 1 7/8 3
27 0.1440 1 7/8 3
28 0.1405 1 3/4 2 7/8
29 0.1360 1 3/4 2 7/8
30 0.1285 1 5/8 2 3/4
31 0.1200 1 5/8 2 3/4
32 0.1160 1 5/8 2 3/4
33 0.1130 1 1/2 2 5/8
34 0.1110 1 1/2 2 5/8
35 0.1100 1 1/2 2 5/8
36 0.1065 1 7/16 2 1/2
37 0.1040 1 7/16 2 1/2
38 0.1015 1 7/16 2 1/2
39 0.0995 1 3/8 2 3/8
40 0.0980 1 3/8 2 3/8
41 0.0960 1 3/8 2 3/8
42 0.0935 1 1/4 2 1/4
43 0.0890 1 1/4 2 1/4
44 0.0860 1 1/8 2 1/8
45 0.0820 1 1/8 2 1/8
46 0.0810 1 1/8 2 1/8
47 0.0785 1 2
48 0.0760 1 2
49 0.0730 1 2
50 0.0700 1 2
51 0.0670 1 2
52 0.0635 7/8 1 7/8
53* 0.0595 7/8 1 7/8
54* 0.0550 7/8 1 7/8
55* 0.0520 7/8 1 7/8
56* 0.0465 3/4 1 3/4
57* 0.0430 3/4 1 3/4
58* 0.0420 11/16 1 5/8
59* 0.0410 11/16 1 5/8
60* 0.0400 11/16 1 5/8
  1. *Not Split Point
  2. All dimensions are in inches.

Letter SizesNitro Drill Bit

Size Decimal
Equivalent
Flute
Length
Overall
Length
A 0.2340 2 5/8 3 7/8
B 0.2380 2 3/4 4
C 0.2420 2 3/4 4
D 0.2460 2 3/4 4
E 0.2500 2 3/4 4
F 0.2570 2 7/8 4 1/8
G 0.2610 2 7/8 4 1/8
H 0.2660 2 7/8 4 1/8
I 0.2720 2 7/8 4 1/8
J 0.2770 2 7/8 4 1/8
K 0.2810 2 15/16 4 1/4
L 0.2900 2 15/16 4 1/4
M 0.2950 3 1/16 4 3/8
N 0.3020 3 1/16 4 3/8
O 0.3160 3 3/16 4 1/2
P 0.3230 3 5/16 4 5/8
Q 0.3320 3 7/16 4 3/4
R 0.3390 3 7/16 4 3/4
S 0.3480 3 1/2 4 7/8
T 0.3580 3 1/2 4 7/8
U 0.3680 3 5/8 5
V 0.3770 3 5/8 5
W 0.3860 3 3/4 5 1/8
X 0.3970 3 3/4 5 1/8
Y 0.4040 3 7/8 5 1/4
Z 0.4130 3 7/8 5 1/4
  1. All dimensions are in inches.

Drill Feeds & Speeds

Material Hardness Drill Type Point Style Point
Angle
Speed
(SFM)
Feed Coolant
Aluminum / Aluminum Alloys - High Helix Standard 118° 200-300 Medium to Heavy Water Soluble
Aluminum Bronze - High Helix Standard 118° 50-100 Medium to Heavy Water Soluble
Brass, Free Machining - Low Helix Standard 118° 100-250 Medium to Heavy Water Soluble
Bronze, Soft Medium Below 200 General Purpose Standard 118° 70-150 Medium to Heavy Water Soluble
Bronze, High Tensile - Low Helix or Half RD Standard 118° 50-100 Medium to Heavy Water Soluble
Copper / Copper Alloys - General Purpose Standard 118° 100-200 Medium Water Soluble
High Temp Alloys, Cobalt Base 180-300 Cobalt Split Point 135° 5-20 Medium Activated Oils
High Temp Alloys, Iron Base 180-300 Cobalt Split Point 135° 5-20 Medium Activated Oils
High Temp Alloys, Nickel Base 180-300 Nitro® or Cobalt Split Point 135° 5-15 Medium Activated Oils
Iron, Soft Case Up to 150 Heavy Duty or Nitro® Split Point 135° 75-150 Medium Dry / Air
Iron, Medium Case 150-250 Heavy Duty or Nitro® Split Point 135° 50-100 Medium Dry / Air
Iron, Hard Case Over 250 Carbide Standard 118° 40-75 Light to Medium Dry / Air
Plastic & Related Materials - Low Helix Low Angle 90° 100-200 Medium to Heavy Dry / Air
Steel, Low Carbon Alloy 125-275 General Purpose Standard 118° 50-70 Medium Water Soluble
Steel, Medium Carbon Alloy 275-325 Heavy Duty or Nitro® Split Point 135° 40-55 Medium Water Soluble
Steel, High Carbon Alloy Over 325 Cobalt Split Point 135° 30-50 Medium Water Soluble
Steel, Low & Medium Carbon Alloy Below 175 General Purpose Standard 118° 45-95 Medium to Heavy Water Soluble
Steel, High Carbon Alloy 175-225 General Purpose Standard 118° 45-65 Medium Water Soluble
Stainless Steel, Austenitic Below 300 Heavy Duty or Nitro® Split Point 135° 40-60 Medium to Heavy Water Soluble
Stainless Steel, Precipitation Over 300 Cobalt Split Point 135° 20-40 Medium Cutting Oil
  1. Feeds – Feed rates for drilling are governed by the drill diameter, machinability of materials and depth of hole.
  2. Speeds – The speed of a drill is determined by the rate which the outer periphery of the tool rotates in relation to material being cut. In general, the SFM at which a drill will operate is within a range based upon the workpiece material, its condition, hardness and depth of hole. It is usually advisable to start the drilling process at a slower SFM and then increase to the maximum.
  3. RPM = (SFM x 3.82) divided by TD = Revolutions Per Minute
  4. SFM = RPM x TD x .262 = Surface Feet Per Minute
  5. TD – Tool diameter in inches
Nitro Drill Bit
View
Size Bit Decimal Overall Length Shank Type Item # Availability Price Quantity UOM
Set 1/16 - 1/2 Set w/ Round Index - Straight DRILSETNR 2-4 Working Days $119.29648/EA EA
Set 1/16 - 1/2 Set w/ Metal Index - Straight DRILSETN 2-4 Working Days $102.0268/EA EA
1/16 0.0625 1 7/8 Straight DRIL1/16N In Stock $1.61497/EA EA
5/64 0.0781 2 Straight DRIL5/64N In Stock $1.81618/EA EA
3/32 0.0938 2 1/4 Straight DRIL3/32N In Stock $1.81488/EA EA
7/64 0.1094 2 5/8 Straight DRIL7/64N In Stock $1.81661/EA EA
1/8 0.1250 2 3/4 Straight DRIL1/8N In Stock $2.08663/EA EA
9/64 0.1406 2 7/8 Straight DRIL9/64N In Stock $2.08711/EA EA
5/32 0.1563 3 1/8 Straight DRIL5/32N In Stock $2.37111/EA EA
11/64 0.1719 3 1/4 Straight DRIL11/64N In Stock $2.40318/EA EA
3/16 0.1875 3 1/2 Straight DRIL3/16N In Stock $2.81588/EA EA
13/64 0.2031 3 5/8 Straight DRIL13/64N In Stock $3.01531/EA EA
7/32 0.2188 3 3/4 Straight DRIL7/32N In Stock $3.32071/EA EA
15/64 0.2344 3 7/8 Straight DRIL15/64N In Stock $3.51612/EA EA
1/4 0.25 4 Straight DRIL1/4N In Stock $3.774/EA EA
17/64 0.2656 4 1/8 Straight DRIL17/64N In Stock $4.61589/EA EA
9/32 0.2813 4 1/4 Straight DRIL9/32N In Stock $5.55157/EA EA
19/64 0.2969 4 3/8 Straight DRIL19/64N In Stock $5.04837/EA EA
5/16 0.3125 4 1/2 Straight DRIL5/16N In Stock $6.16705/EA EA
21/64 0.3281 4 5/8 Straight DRIL21/64N In Stock $6.79837/EA EA
11/32 0.3438 4 3/4 Straight DRIL11/32N In Stock $7.55752/EA EA
23/64 0.3594 4 7/8 Straight DRIL23/64N In Stock $8.17911/EA EA
3/8 0.3750 5 Straight DRIL3/8N In Stock $8.25439/EA EA
25/64 0.3906 5 1/8 Straight DRIL25/64N In Stock $9.67973/EA EA
13/32 0.4063 5 1/4 Straight DRIL13/32N In Stock $9.97596/EA EA
27/64 0.4219 5 3/8 Straight DRIL27/64N In Stock $5.54617/EA EA
7/16 0.4375 5 1/2 Straight DRIL7/16N In Stock $11.8728/EA EA
29/64 0.4531 5 5/8 Straight DRIL29/64N In Stock $13.59327/EA EA
15/32 0.4688 5 3/4 Straight DRIL15/32N In Stock $13.93581/EA EA
31/64 0.4844 5 7/8 Straight DRIL31/64N In Stock $14.58803/EA EA
1/2 0.5 6 Straight DRIL1/2N In Stock $13.97773/EA EA
#1 0.2280 3 7/8 Straight DRIL001N In Stock $3.90414/EA EA
#2 0.2210 3 7/8 Straight DRIL002N 2-4 Working Days $3.47096/EA EA
#3 0.2130 3 3/4 Straight DRIL003N In Stock $3.5735/EA EA
#4 0.2090 3 3/4 Straight DRIL004N 2-4 Working Days $3.27686/EA EA
#5 0.2055 3 3/4 Straight DRIL005N 2-4 Working Days $3.23905/EA EA
#6 0.204 3 3/4 Straight DRIL006N 2-4 Working Days $3.23905/EA EA
#7 0.2010 3 5/8 Straight DRIL007N In Stock $3.48128/EA EA
#8 0.1990 3 5/8 Straight DRIL008N In Stock $3.93981/EA EA
#9 0.1960 3 5/8 Straight DRIL009N In Stock $3.29198/EA EA
#10 0.189 3 5/8 Straight DRIL010N In Stock $3.00575/EA EA
#11 0.1910 3 1/2 Straight DRIL011N 2-4 Working Days $2.87105/EA EA
#12 0.1935 3 1/2 Straight DRIL012N 2-4 Working Days $2.87105/EA EA
#13 0.1850 3 1/2 Straight DRIL013N 2-4 Working Days $2.87105/EA EA
#14 0.1820 3 3/8 Straight DRIL014N 2-4 Working Days $2.66688/EA EA
#15 0.18 3 3/8 Straight DRIL015N 2-4 Working Days $2.66688/EA EA
#16 0.1770 3 3/8 Straight DRIL016N In Stock $2.99204/EA EA
#18 0.1695 3 1/4 Straight DRIL018N 2-4 Working Days $2.53076/EA EA
#19 0.1660 3 1/4 Straight DRIL019N In Stock $2.53327/EA EA
#20 0.1610 3 1/4 Straight DRIL020N In Stock $2.22538/EA EA
#21 0.1590 3 1/4 Straight DRIL021N In Stock $2.69271/EA EA
#22 0.1570 3 1/8 Straight DRIL022N In Stock $2.28751/EA EA
#23 0.1540 3 1/8 Straight DRIL023N 2-4 Working Days $2.33415/EA EA
#24 0.1520 3 1/8 Straight DRIL024N In Stock $2.63158/EA EA
#25 0.1495 3 Straight DRIL025N In Stock $2.31903/EA EA
#26 0.1470 3 Straight DRIL026N 2-4 Working Days $1.92075/EA EA
#27 0.1440 3 Straight DRIL027N In Stock $2.31649/EA EA
#28 0.1405 2 7/8 Straight DRIL028N 2-4 Working Days $1.94093/EA EA
#29 0.1360 2 7/8 Straight DRIL029N In Stock $2.17408/EA EA
#30 0.1285 2 3/4 Straight DRIL030N In Stock $2.18433/EA EA
#31 0.12 2 3/4 Straight DRIL031N In Stock $1.96612/EA EA
#32 0.1160 2 3/4 Straight DRIL032N 2-4 Working Days $1.67371/EA EA
#33 0.1130 2 5/8 Straight DRIL033N 2-4 Working Days $1.67371/EA EA
#34 0.1110 2 5/8 Straight DRIL034N 2-4 Working Days $1.67371/EA EA
#35 0.1130 2 5/8 Straight DRIL035N In Stock $1.87771/EA EA
#36 0.1065 2 1/2 Straight DRIL036N In Stock $1.78161/EA EA
#37 0.1040 2 1/2 Straight DRIL037N 2-4 Working Days $1.56785/EA EA
#38 0.1015 2 1/2 Straight DRIL038N In Stock $1.56618/EA EA
#39 0.0995 2 3/8 Straight DRIL039N In Stock $1.44434/EA EA
#40 0.98 2 3/8 Straight DRIL040N 2-4 Working Days $1.56785/EA EA
#41 0.0960 2 3/8 Straight DRIL041N 2-4 Working Days $1.49477/EA EA
#42 0.0935 2 1/4 Straight DRIL042N 2-4 Working Days $1.49477/EA EA
#43 0.0890 2 1/4 Straight DRIL043N In Stock $1.50774/EA EA
#44 0.0860 2 1/8 Straight DRIL044N In Stock $1.50956/EA EA
#45 0.0820 2 1/8 Straight DRIL045N In Stock $1.66639/EA EA
#46 0.0810 2 1/8 Straight DRIL046N 2-4 Working Days $1.4494/EA EA
#47 0.0785 2 Straight DRIL047N 2-4 Working Days $1.4494/EA EA
#48 0.0760 2 Straight DRIL048N 2-4 Working Days $1.4494/EA EA
#49 0.0730 2 Straight DRIL049N 2-4 Working Days $1.4494/EA EA
#50 0.07 2 Straight DRIL050N In Stock $1.63088/EA EA
#51 0.0670 2 Straight DRIL051N In Stock $1.63088/EA EA
#52 0.0635 1 7/8 Straight DRIL052N 2-4 Working Days $1.38636/EA EA
#53 0.0595 1 7/8 Straight DRIL053N 2-4 Working Days $1.82495/EA EA
#54 0.0550 1 7/8 Straight DRIL054N 2-4 Working Days $1.34353/EA EA
#55 0.0520 1 7/8 Straight DRIL055N In Stock $1.63339/EA EA
#56 0.0465 1 3/4 Straight DRIL056N 2-4 Working Days $0.99819/EA EA
#57 0.0430 1 3/4 Straight DRIL057N 2-4 Working Days $1.6359/EA EA
#58 0.0420 1 5/8 Straight DRIL058N 2-4 Working Days $2.05687/EA EA
#59 0.0410 1 5/8 Straight DRIL059N 2-4 Working Days $2.05687/EA EA
#60 0.04 1 5/8 Straight DRIL060N 2-4 Working Days $2.05687/EA EA
A 0.2340 3 7/8 Straight DRILA-N 2-4 Working Days $2.85511/EA EA
B 0.2380 4 Straight DRILB-N 2-4 Working Days $2.85511/EA EA
C 0.2420 4 Straight DRILC-N 2-4 Working Days $3.29335/EA EA
D 0.2460 4 Straight DRILD-N 2-4 Working Days $3.29335/EA EA
E 0.25 4 Straight DRILE-N In Stock $5.16084/EA EA
F 0.2570 4 1/8 Straight DRILF-N In Stock $5.53542/EA EA
G 0.2610 4 1/8 Straight DRILG-N In Stock $5.84756/EA EA
H 0.2660 4 1/8 Straight DRILH-N 2-4 Working Days $3.92214/EA EA
I 0.2720 4 1/8 Straight DRILI-N In Stock $5.98004/EA EA
J 0.2770 4 1/8 Straight DRILJ-N In Stock $7.4201/EA EA
K 0.2810 4 1/4 Straight DRILK-N 2-4 Working Days $3.75639/EA EA
L 0.29 4 1/4 Straight DRILL-N 2-4 Working Days $3.75639/EA EA
M 0.2950 4 3/8 Straight DRILM-N 2-4 Working Days $5.38077/EA EA
N 0.3020 4 3/8 Straight DRILN-N 2-4 Working Days $5.38077/EA EA
O 0.3160 4 1/2 Straight DRILO-N In Stock $8.66743/EA EA
P 0.3230 4 5/8 Straight DRILP-N 2-4 Working Days $6.32176/EA EA
Q 0.3320 4 3/4 Straight DRILQ-N In Stock $8.78687/EA EA
R 0.3390 4 3/4 Straight DRILR-N In Stock $8.33818/EA EA
S 0.3480 4 7/8 Straight DRILS-N 2-4 Working Days $7.43021/EA EA
T 0.3580 4 7/8 Straight DRILT-N 2-4 Working Days $7.43021/EA EA
U 0.3680 5 Straight DRILU-N In Stock $10.86712/EA EA
V 0.3770 5 Straight DRILV-N In Stock $9.80293/EA EA
W 0.3860 5 1/8 Straight DRILW-N 2-4 Working Days $7.20011/EA EA
X 0.3970 5 1/8 Straight DRILX-N 2-4 Working Days $7.20011/EA EA
Y 0.4040 5 1/4 Straight DRILY-N 2-4 Working Days $7.20011/EA EA
Z 0.4130 5 1/4 Straight DRILZ-N 2-4 Working Days $7.20011/EA EA