
Designed with a length to diameter ratio of approximately 4-1/2 to 1 , this line of carbide boring tools features set-screw flats that position the cutting edge on exact centerline when used in a Criterion Boring Head.
They are available in two all-purpose grades of carbide - the ABT tools are a grade C-2 and are used on cast iron and all non-ferrous materials. The SBT tools are a grade C-6 and are intended for use on steel and other continuous chip materials. For the correct grade for your particular job we suggest you contact your carbide supplier or you may refer to the comparison charts found in most carbide catalogs.
Carbide Boring Tools with minimum boring diameters of 1/8, 3/16 and 1/4 feature a solid carbide neck and head.
SQUARE SHANKS
The Boring Tools are available with either round or square shanks. Both
styles work equally as well when used with the Criterion Boring Head. The square shanks
however are the better choice for holding in a turret post or any flat-bottomed tool
holder.
When square shanks are required contact our customer service department for the correct Code No. and Tool No.
Dimensions of Square Shanks |
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| SHANK DIA. |
STEEL | NON-FERROUS | MIN. BORE DIAMETER |
OVERALL LENGTH |
MAX. BORING DEPTH |
||
|---|---|---|---|---|---|---|---|
| Code No. | Tool No. | Code No. | Tool No. | ||||
| 3/8 | 10770 | SBT-062A | 15770 | ABT-062A | 1/16" | 1-17/32" | 1/4" |
| 10771 | SBT-093A | 15771 | ABT-093A | 3/32" | 1-3/4" | 3/8" | |
| 10700 | SBT-125A | 15700 | ABT-125A | 1/8" | 1-7/8" | 1/2" | |
| 10701 | SBT-187A | 15701 | ABT-187A | 3/16" | 2-5/32" | 13/16" | |
| 10702 | SBT-250A | 15702 | ABT-250A | 1/4" | 2-15/32" | 1-1/8" | |
| 10703 | SBT-312A | 15703 | ABT-312A | 5/16" | 2-13/16" | 1-1/2" | |
| 10704 | SBT-375A | 15704 | ABT-375A | 3/8" | 3-3/16" | 1-7/8" | |
| 10705 | SBT-500A | 15705 | ABT-500A | 1/2" | 3-1/2" | 2-5/16" | |
| 1/2 | 10772 | SBT-062A | 15772 | ABT-062A | 1/16" | 1-17/32" | 1/4" |
| 10773 | SBT-093A | 15773 | ABT-093A | 3/32" | 1-3/4" | 3/8" | |
| 10706 | SBT-125B | 15706 | ABT-125B | 1/8" | 1-7/8" | 1/2" | |
| 10707 | SBT-187B | 15707 | ABT-187B | 3/16" | 2-5/32" | 13/16" | |
| 10708 | SBT-250B | 15708 | ABT-250B | 1/4" | 2-15/32" | 1-1/8" | |
| 10709 | SBT-312B | 15709 | ABT-312B | 5/16" | 2-13/16" | 1-1/2" | |
| 10710 | SBT-375B | 15710 | ABT-375B | 3/8" | 3-3/16" | 1-3/4" | |
| 10711 | SBT-500B | 15711 | ABT-500B | 1/2" | 3-1/2" | 2-3/16" | |
| 5/8 | 10712 | SBT-125C | 15712 | ABT-125C | 1/8" | 2-1/4" | 1/2" |
| 10713 | SBT-187C | 15713 | ABT-187C | 3/16" | 2-9/16" | 13/16" | |
| 10714 | SBT-250C | 15714 | ABT-250C | 1/4" | 2-7/8" | 1-1/8" | |
| 10715 | SBT-312C | 15715 | ABT-312C | 5/16" | 3-1/4" | 1-1/2" | |
| 10716 | SBT-375C | 15716 | ABT-375C | 3/8" | 3-1/2" | 1-3/4" | |
| 10717 | SBT-500C | 15717 | ABT-500C | 1/2" | 3-13/16" | 2-1/8" | |
| 10718 | SBT-625C | 15718 | ABT-625C | 5/8" | 4-1/8" | 2-1/2" | |
| 3/4 | 10720 | SBT-500D | 15720 | ABT-500D | 1/2" | 4-1/4" | 2-1/2" |
| 10765 | SBT-625D | 15765 | ABT-625D | 5/8" | 4-15/32" | 2-3/4" | |
| 10721 | SBT-750D | 15721 | ABT-750D | 3/4" | 4-11/16" | 3" | |
| 10722 | SBT-1000D | 15722 | ABT-1000D | 1" | 5-1/8" | 3-1/2" | |
| 10723 | SBT-1250D | 15723 | ABT-1250D | 1-1/4" | 5-9/16" | 4" | |
| 1 | 10724 | SBT-500E |
15724 | ABT-500E | 1/2" | 4-1/4" | 2-3/8" |
| 10766 | SBT-625E | 15766 | ABT-625E | 5/8" | 4-15/32" | 2-5/8" | |
| 10725 | SBT-750E | 15725 | ABT-750E | 3/4" | 4-11/16" | 2-7/8" | |
| 10726 | SBT-1000E | 15726 | ABT-1000E | 1" | 5-1/8" | 3-1/2" | |
| 10727 | SBT-1250E | 15727 | ABT-1250E | 1-1/4" | 5-9/16" | 3-7/8" | |

For use in Boring Heads
As in the carbide tools shown - this high speed line also features a length to diameter ratio of approximately 4-1/2 to 1. Made of M4 high speed steel and heat treated to 64-66 on the Rockwell "C" scale, these tools range in bore diameters from 1/8 to 1-1/4 inches. Lengths range from 1-7/8 to 5-9/16 inches.
The generous head size dissipates the heat generated during a cut - while the large flute area insures excellent chip clearance. One of the plus features of this style of tool, in both carbide and high speed, is its adaptability to modifications for special forms - i.e. back-boring, grooving, etc.
SQUARE SHANKS
The Boring Tools listed above are available with either round or square shanks. Both
styles work equally as well when used with the Criterion Boring Head. The square shanks
however are the better choice for holding in a turret post or any flat-bottomed tool
holder.
When square shanks are required contact our customer service department for the correct Code No. and Tool No.
Dimensions of Square Shanks |
![]() |

| SHANK DIAMETER |
CODE NO. | TOOL NO. | MIN. BORE DIAMETER |
OVERALL LENGTH |
MAX. BORING DEPTH |
|---|---|---|---|---|---|
| 3/8 | 10728 | HSS-125A | 1/8" | 1-7/8" | 1/2" |
| 10729 | HSS-187A | 3/16" | 2-5/32" | 13/16" | |
| 10730 | HSS-250A | 1/4" | 2-15/32" | 1-1/8" | |
| 10731 | HSS-312A | 5/16" | 2-13/16" | 1-1/2" | |
| 10732 | HSS-375A | 3/8" | 3-3/16" | 1-7/8" | |
| 10733 | HSS-500A | 1/2" | 3-1/2" | 2-5/16" | |
| 1/2 | 10734 | HSS-125B | 1/8" | 1-7/8" | 1/2" |
| 10735 | HSS-187B | 3/16" | 2-5/32" | 13/16" | |
| 10736 | HSS-250B | 1/4" | 2-15/32" | 1-1/8" | |
| 10737 | HSS-312B | 5/16" | 2-13/16" | 1-1/2" | |
| 10738 | HSS-375B | 3/8" | 3-3/16" | 1-3/4" | |
| 10739 | HSS-500B | 1/2" | 3-1/2" | 2-3/16" | |
| 5/8 | 10740 | HSS-125C | 1/8" | 2-1/4" | 1/2" |
| 10741 | HSS-187C | 3/16" | 2-9/16" | 13/16" | |
| 10742 | HSS-250C | 1/4" | 2-7/8" | 1-1/8" | |
| 10743 | HSS-312C | 5/16" | 3-1/4" | 1-1/2" | |
| 10744 | HSS-375C | 3/8" | 3-1/2" | 1-3/4" | |
| 10745 | HSS-500C | 1/2" | 3-13/16" | 2-1/8" | |
| 10746 | HSS-625C | 5/8" | 4-1/8" | 2-1/2" | |
| 3/4 | 10748 | HSS-500D | 1/2" | 4-1/4" | 2-1/2" |
| 10763 | HSS-625D | 5/8" | 4-15/32" | 2-3/4" | |
| 10749 | HSS-750D | 3/4" | 4-11/16" | 3" | |
| 10750 | HSS-1000D | 1" | 5-1/8" | 3-1/2" | |
| 10751 | HSS-1250D | 1-1/4" | 5-9/16" | 4" | |
| 1 | 10752 | HSS-500E | 1/2" | 4-1/4" | 2-3/8" |
| 10764 | HSS-625E | 5/8" | 4-15/32" | 2-5/8" | |
| 10753 | HSS-750E | 3/4" | 4-11/16" | 2-7/8" | |
| 10754 | HSS-1000E | 1" | 5-1/8" | 3-1/2" | |
| 10755 | HSS-1250E | 1-1/4" | 5-9/16" | 3-7/8" |