Cobalt Aircraft Extension Drills - Fractional Sizes - 12" Overall Length

National Aerospace Standard 907,
Type J Cobalt Extension Drill Cobalt HSS, Surface Treated,135º Split Point.

Made to NAS 907 Type J specifications, these cobalt jobbers length drills are used for drilling in tough, high tensile strength materials like stainless steels, titanium and inconel. They are made of cobalt high speed steel, with heavy duty flute construction and 135° split point..

Fractional Sizes - 12" Overall Length

Diameter Number	Part Number	Decimal Equivalent Inches	Flute Length Inches	Package Quantity	Price Each
1/16	06-300	.0625	7/8	12	$4.53
5/64	06-301	.0781	1	12	$4.53
3/32	06-302	.0938	1-1/4	12	$3.50
7/64	06-303	.1094	1-1/2	12	$4.13
1/8	06-304	.1250	1-5/8	12	$4.06
9/64	06-305	.1406	1-3/4	12	$4.53
5/32	06-306	.1562	2	12	$4.34
11/64	06-307	.1719	2-1/8	12	$4.50
3/16	06-308	.1875	2-5/16	12	$4.50
13/64	06-309	.2031	2-7/16	12	$4.90
7/32	06-310	.2188	2-1/2	12	$5.41
15/64	06-311	.2344	2-5/8	6	$5.81
1/4	06-312	.2500	2-3/4	6	$5.52
5/16	06-313	.3125	3-1/16	6	$8.03
3/8	06-314	.3750	3-5/8	3	$10.50
15/32	06-315	.4688	4-5/16	3	$14.85
9/32	06-316	.2812	2-15/16	6	$8.00
19/64	06-317	.2969	3-1/16	6	$8.40
7/16	06-318	.4375	3-1/16	3	$12.48
1/2	06-319	.5000	4-1/2	3	$16.52
13/32	06-320	.4062	3-7/8	3	$11.65
11/32	06-321	.3438	3-7/16	6	$8.98
23/64	06-322	.3594	3-1/2	6	$10.03
27/64	06-324	.4219	3-15/16	3	$12.33
17/64	06-325	.2656	2-7/8	6	$8.10
21/64	06-326	.3281	3-5/16	6	$8.93
25/64	06-327	.3906	3-3/4	3	$11.10
29/64	06-328	.4531	4-3/16	3	$14.55
31/64	06-329	.4844	4-3/8	3	$15.03

Drill Stops