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Nitro Stubby 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° 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.

Products
Dimensional Specifications
Drill Feeds & Speeds

Dimensional Specifications

Dimensional SpecificationsNitro Stubby

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

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

Feeds – Feed rates for drilling are governed by the drill diameter, machinability of materials and depth of hole.
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.
RPM = (SFM x 3.82) divided by TD = Revolutions Per Minute
SFM = RPM x TD x .262 = Surface Feet Per Minute
TD – Tool diameter in inches

Nitro Stubby Drill Bit

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Size Bit Decimal Overall Length Shank Type Item # Availability Price Quantity UOM

1/16

0.0625

1 5/8

Straight

DRIL1/16S

In Stock

$1.78463/EA

See Quantity Discounts

1/16 NITRO STUBBY DRILL BIT

$1.78463/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.78463/EA
12	$1.78463/EA
48	$1.3866/EA
192	$1.02805/EA

5/64

0.0781

1 11/16

Straight

DRIL5/64S

In Stock

$1.51803/EA

See Quantity Discounts

5/64 NITRO STUBBY DRILL BIT

$1.51803/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.51803/EA
12	$1.51803/EA
48	$1.17946/EA
192	$0.87447/EA

3/32

0.0938

1 3/4

Straight

DRIL3/32S

In Stock

$1.57359/EA

See Quantity Discounts

3/32 NITRO STUBBY DRILL BIT

$1.57359/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.57359/EA
12	$1.57359/EA
48	$1.22263/EA
192	$0.90648/EA

7/64

0.1094

1 13/16

Straight

DRIL7/64S

In Stock

$3.07429/EA

See Quantity Discounts

7/64 NITRO STUBBY DRILL BIT

$3.07429/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.07429/EA
12	$3.07429/EA
48	$2.38863/EA
192	$1.77097/EA

1/8

0.1250

1 7/8

Straight

DRIL1/8S

In Stock

$2.94918/EA

See Quantity Discounts

1/8 NITRO STUBBY DRILL BIT

$2.94918/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.94918/EA
12	$2.94918/EA
48	$2.29142/EA
192	$1.6989/EA

5/32

0.1563

2 1/16

Straight

DRIL5/32S

In Stock

$3.17269/EA

See Quantity Discounts

5/32 NITRO STUBBY DRILL BIT

$3.17269/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.17269/EA
12	$3.17269/EA
48	$2.46508/EA
192	$1.82765/EA

11/64

0.1719

2 1/8

Straight

DRIL11/64S

In Stock

$2.14761/EA

See Quantity Discounts

11/64 NITRO STUBBY DRILL BIT

$2.14761/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.14761/EA
12	$2.14761/EA
48	$1.66863/EA
192	$1.23715/EA

3/16

0.1875

2 3/16

Straight

DRIL3/16S

In Stock

$2.92626/EA

See Quantity Discounts

3/16 NITRO STUBBY DRILL BIT

$2.92626/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.92626/EA
12	$2.92626/EA
48	$2.27361/EA
192	$1.68569/EA

13/64

0.2031

2 1/4

Straight

DRIL13/64S

In Stock

$3.13306/EA

See Quantity Discounts

13/64 NITRO STUBBY DRILL BIT

$3.13306/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.13306/EA

7/32

0.2188

2 3/8

Straight

DRIL7/32S

In Stock

$3.25122/EA

See Quantity Discounts

7/32 NITRO STUBBY DRILL BIT

$3.25122/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.25122/EA

15/64

0.2344

2 7/16

Straight

DRIL15/64S

In Stock

$2.95064/EA

See Quantity Discounts

15/64 NITRO STUBBY DRILL BIT

$2.95064/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.95064/EA

1/4

0.2500

2 1/2

Straight

DRIL1/4S

In Stock

$3.94338/EA

See Quantity Discounts

1/4 NITRO STUBBY DRILL BIT

$3.94338/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.94338/EA

17/64

0.2656

2 5/8

Straight

DRIL17/64S

In Stock

$4.58271/EA

See Quantity Discounts

17/64 NITRO STUBBY DRILL BIT

$4.58271/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$4.58271/EA

9/32

0.2813

2 11/16

Straight

DRIL9/32S

In Stock

$5.06351/EA

See Quantity Discounts

9/32 NITRO STUBBY DRILL BIT

$5.06351/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$5.06351/EA

19/64

0.2969

2 3/4

Straight

DRIL19/64S

In Stock

$4.7224/EA

See Quantity Discounts

19/64 NITRO STUBBY DRILL BIT

$4.7224/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$4.7224/EA

21/64

0.3281

2 15/16

Straight

DRIL21/64S

In Stock

$5.84576/EA

See Quantity Discounts

21/64 NITRO STUBBY DRILL BIT

$5.84576/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$5.84576/EA

11/32

0.3438

Straight

DRIL11/32S

In Stock

$5.68846/EA

See Quantity Discounts

11/32 NITRO STUBBY DRILL BIT

$5.68846/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$5.68846/EA

23/64

0.3594

3 1/16

Straight

DRIL23/64S

In Stock

$8.15636/EA

See Quantity Discounts

23/64 NITRO STUBBY DRILL BIT

$8.15636/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$8.15636/EA

3/8

0.3750

3 1/8

Straight

DRIL3/8S

In Stock

$9.10538/EA

See Quantity Discounts

3/8 NITRO STUBBY DRILL BIT

$9.10538/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$9.10538/EA

25/64

0.3906

3 1/4

Straight

DRIL25/64S

In Stock

$12.10586/EA

See Quantity Discounts

25/64 NITRO STUBBY DRILL BIT

$12.10586/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$12.10586/EA

13/32

0.4063

3 5/16

Straight

DRIL13/32S

In Stock

$12.0411/EA

See Quantity Discounts

13/32 NITRO STUBBY DRILL BIT

$12.0411/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$12.0411/EA

27/64

0.4219

3 3/8

Straight

DRIL27/64S

In Stock

$10.5518/EA

See Quantity Discounts

27/64 NITRO STUBBY DRILL BIT

$10.5518/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$10.5518/EA

7/16

0.4375

3 7/16

Straight

DRIL7/16S

In Stock

$12.61261/EA

See Quantity Discounts

7/16 NITRO STUBBY DRILL BIT

$12.61261/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$12.61261/EA

29/64

0.4531

3 9/16

Straight

DRIL29/64S

In Stock

$12.63888/EA

See Quantity Discounts

29/64 NITRO STUBBY DRILL BIT

$12.63888/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$12.63888/EA

15/32

0.4688

3 5/8

Straight

DRIL15/32S

In Stock

$11.98556/EA

See Quantity Discounts

15/32 NITRO STUBBY DRILL BIT

$11.98556/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$11.98556/EA

31/64

0.4844

3 11/16

Straight

DRIL31/64S

In Stock

$13.72936/EA

See Quantity Discounts

31/64 NITRO STUBBY DRILL BIT

$13.72936/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$13.72936/EA

1/2

0.5000

3 3/4

Straight

DRIL1/2S

In Stock

$15.56869/EA

See Quantity Discounts

1/2 NITRO STUBBY DRILL BIT

$15.56869/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$15.56869/EA