Cobalt Aircraft Drills - Letter Sizes

National Aerospace Standard 907,
Type J Cobalt Jobbers Length Drill Cobalt HSS, Surface Treated, 135° Split Point.

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

Letter Sizes

Diameter Number	Part Number	Decimal Equivalent Inches	Flute Length Inches	Overall Length Inches	Package Quantity	Price Each
A	03-090	.234	2-5/8	3-7/8	12	$2.02
B	03-091	.238	2-3/4	4	12	$2.21
C	03-092	.242	2-3/4	4	12	$2.21
D	03-093	.246	2-3/4	4	12	$2.21
E	03-094	.250	2-3/4	4	12	$1.85
F	03-095	.257	2-7/8	4-1/8	12	$2.31
G	03-096	.261	2-7/8	4-1/8	12	$2.31
H	03-097	.266	2-7/8	4-1/8	12	$2.43
I	03-098	.272	2-7/8	4-1/8	12	$2.55
J	03-099	.277	2-7/8	4-1/8	12	$2.65
K	03-100	.281	2-15/16	4-1/4	12	$2.65
L	03-101	.290	2-15/16	4-1/4	12	$2.87
M	03-102	.295	3-1/16	4-3/8	12	$3.10
N	03-103	.302	3-1/16	4-3/8	12	$3.25
O	03-104	.316	3-3/16	4-1/2	12	$3.25
P	03-105	.323	3-3/16	4-5/8	6	$3.50
Q	03-106	.332	3-7/16	4-3/4	6	$3.60
R	03-107	.339	3-7/16	4-3/4	6	$3.76
S	03-108	.348	3-1/2	4-7/8	6	$4.30
T	03-109	.358	3-1/2	4-7/8	6	$4.30
U	03-110	.368	3-5/8	5	6	$4.53
V	03-111	.377	3-5/8	5	6	$5.05
W	03-112	.386	3-3/4	5-1/8	6	$5.40
X	03-113	.397	3-3/4	5-1/8	6	$5.40
Y	03-114	.404	3-7/8	5-1/4	6	$5.80
Z	03-115	.413	3-7/8	5-1/4	6	$6.05

Drill Stops