• Model NO.：imperial & metric
• Style：Universal Tool
• Structure：Integral
• Cutting Process：Boring Tool
• Work Type：Cut off
• Transport Package：Plastic Box
• Specification：M3 to M24
• Trademark：stc
• Origin：Jiangsu
• HS Code：82075090
• Production Capacity：10000PCS,Month

Basic Info.

Model NO. imperial & metric Style Universal Tool Structure Integral Cutting Process Boring Tool Work Type Cut off Transport Package Plastic Box Specification M3 to M24 Trademark stc Origin Jiangsu HS Code 82075090 Production Capacity 10000PCS/Month

Product Description

They are made from high speed steel M2.

They are used for enlaring holes for the socket heads of cap screws.

Features an oversizes solid pilot.

With striaght/round shank.

Metric and imperial.

Kinds of sets available.

Screw Size	Pilot Diam.	Cutter Diam.	Shank Diam.
5	.141"	.221"	3/16"
6	0.15	0.242	7/32
8	11/64	19/64	1/4
10	13/64	21/64	5/16
1/4	9/32	13/32	3/8
5/16	11/32	1/2	7/16
3/8	13/32	19/32	1/2
7/16	15/32	11/16	1/2
1/2	17/32	25/32	1/2
5/8	21/32	31/32	3/4
3/4	13/16	1 3/16	1
Screw Size	Pilot Diameter	Shank Diameter	Total Length
1	0.75	2.2	45
1.2	0.95	2.5	45
1.4	1.1	2.8	45
1.6	1.25	3.3	56
1.8	1.45	3.8	56
2	1.6	4.3	56
2.5	2.05	5	56
3	2.5	5	71
3.5	2.9	5	71
4	3.3	5	71
4.5	3.7	8	80
5	4.2	8	80
6	5	8	80
7	6	12.5	100
8	6.8	12.5	100
9	7.8	12.5	100
10	8.5	12.5	100
12	10.2	12.5	100