KATO has transitioned over to the all new KFS-30 Cordless driver, KFS-20 and KFS-25 brushless electric drivers.

KATO maintains the round shaft tools (formerly round electric) for customers still using legacy electric drivers with a keyed chuck system and Tangless round shaft tools for manual installation only.

KATO recommends switching to the Hex Electric installation tools to increase productivity and reduce cost. Learn more.

For the fastest & most productive semi-automatic cordless installation system. KATO recommends switching to the Prewinder Electric Tool. Learn more.

How to Order - Complete Tool Requires the Following Parts:

Round Shaft Mandrel Assembly

(See Part No.)

The KRE Mandrel Assembly is designed to install up to 3 Dia nominal length CoilThread Inserts. The slim profile makes it possible to install CoilThread inserts in hard to reach places. For information on specific sizes, see Part Numbers.

Tangless Handle

2KREH-UI

The Tangless 2KRE Series Mandrel Assembly with OPTIONAL handle (2KREH-UI) can be used for manual installation.

Hex Kit

Tangless Only

Already have Round Electric Tools (2KRE series)? KATO offers a free Hex Kit (hex sleeve and pin) to help KATO Tangless customers easily switch to the new KFS-30 cordless driver, as well as the KFS-20 and KFS-25 brushless electric drivers.

Features & Benefits

Available for both Tangless and tanged CoilThread inserts.
Utilizes KATO's new One Pawl Fits All system. (Tangless only)
Compatiable with screw thread inserts from Helicoil, Recoil and others.
Tangless round shaft mandrels can be used for manual installation with the optional handle (2KREH-UI).

Part Numbers

For fast and accurate part numbers and technical information on specific inserts try out the KATO Product Wizard.

Example of a KATO Round Electric tool part number:

2 KRE C - 02

1 2 3 4 5 6

1 Tool Type	2 Tool Style	3 Thread Designation	4 Mandrel	5 Size Designation	6 Component / Replacement Part
Blank - For CoilThread (Tanged) 2 - Prefix for CoilThread II Tangless inserts	KRE - KATO Round Electric	C - Unified Coarse F - Unified Fine M - Metric	(UNF & Metric Only) F - Free-Running L - Locking	Chart Below	(Tangless Only) G - Nylon Guard H - Adusting Sleeve Housing without Nylon Guard M - Replacement Mandrel

How to Order:

Round Mandrel Assembly (see table below)

Thread Size	Tangless Round Tool¹	Tanged Round Tool	Optional Handle Tangless Only	Hex Kit
Unified Coarse
1-64⁴	2KREC-01	---	Included	---
2-56	2KREC-02	KREC-02	2KREH-UI	2KHEX-1K
4-40	2KREC-04	KREC-04
6-32	2KREC-06	KREC-06
8-32	2KREC-2	KREC-2
10-24	2KREC-3	KREC-3
12-24	---	KREC-1
1/4-20	2KREC-4	KREC-4
5/16-18	2KREC-5	KREC-5
3/8-16	2KREC-6	KREC-6
Unified Fine²
0-80⁴	2KREF-00	---	Included	---
10-32	2KREF-F3 2KREF-L3	KREF-3	2KREH-UI	2KHEX-1K
Metric Coarse²
M2X.4⁴	2KREM-F2 2KREM-L2	---	Included	---
M2.5X.45	2KREM-F2.5 2KREM-L2.5	KREM-2.5	2KREH-UI	2KHEX-1K
M3X.5	2KREM-F3 2KREM-L3	KREM-3
M3.5X.6	---	KREM-3.5
M4X.7	2KREM-F4 2KREM-L4	KREM-4
M5X.8	2KREM-F5 2KREM-L5	KREM-5
M6X1	2KREM-F6 2KREM-L6	KREM-6
M8x1.25³	2KREM-F8 2KREM-L8	KREM-8
M10x1.5³	2KREM-F10 2KREM-L10	---
M12X1.75³	2KREM-F12 2KREM-L12	---

Please Note:

The Tangless Mandrel Assembly consists of the installation mandrel (round shaft), installation pawl, spring, pin, wrenches, and adjusting sleeve fully assembled and ready for use. For manual installation order the optional handle 2KREH-UI handle.
For Improved Tangless installation UNF & Metric thread sizes use a different installation mandrel for Free-Running and Locking CoilThread inserts, this is indicated by the -F and -L designation in the part number. KATO strongly recommends using the Prewinder Electric Tool (KPE) for Fine and Metric thread size.
Not compatible with the KATO One Pawl Fits All system at this time.
For smaller thread sizes, manual installation only. These tools include a gage handle.

Tangless Replacement Parts

Thread Size	Replacement Pawl	Replacement Pawl Kit¹	Replacement Mandrel	Adjusting Sleeve Housing	Nylon Guard
Unified Coarse
1-64	2KIPC-01	2KIPC-01K	2KREC-01M	2KREC-01H	---
2-56	2KIPC-02	2KIPC-02K	2KREC-02M	2KREC-02H	2KREC-02G
4-40	2KIPC-04	2KIPC-04K	2KREC-04M	2KREC-04H	2KREC-04G
6-32	2KIPC-06	2KIPC-06K	2KREC-06M	2KREC-06H	2KREC-06G
8-32	2KIPC-2	2KIPC-2K	2KREC-2M	2KREC-2H	2KREC-2G
10-24	2KIPC-3	2KIPC-3K	2KREC-3M	2KREC-3H	2KREC-3G
12-24	---	---	---	---	---
1/4-20	2KIPC-4	2KIPC-4K	2KREC-4M	2KREC-4H	2KREC-4G
5/16-18	2KIPC-5	2KIPC-5K	2KREC-5M	2KREC-5H	2KREC-5G
3/8-16	2KIPC-6	2KIPC-6K	2KREC-6M	2KREC-6H	2KREC-6G
Unified Fine
0-80	2KIPF-00	2KIPF-00K	2KREF-00M	2KREF-00H	---
10-32	2KIPF-3	2KIPF-3K	2KREF-F3M 2KREF-L3M	2KREF-3H	2KREF-3G
Metric Coarse
M2X.4	2KIPM-2	2KIPM-2K	2KREM-F2M 2KREM-L2M	2KREM-2H	---
M2.5X.45	2KIPM-2.5	2KIPM-2.5K	2KREM-F2.5M 2KREM-L2.5M	2KREM-2.5H	2KREM-2.5G
M3X.5	2KIPM-3	2KIPM-3K	2KREM-F3M 2KREM-L3M	2KREM-3H	2KREM-3G
M3.5X.6	---	---	---	---	---
M4X.7	2KIPM-4	2KIPM-4K	2KREM-F4M 2KREM-L4M	2KREM-4H	2KREM-4G
M5X.8	2KIPM-5	2KIPM-5K	2KREM-F5M 2KREM-L5M	2KREM-5H	2KREM-5G
M6X1	2KIPM-6	2KIPM-6K	2KREM-F6M 2KREM-L6M	2KREM-6H	2KREM-6G

Please Note:

Replacement Pawl Kit - includes one pawl, two pins, and two springs.

Mandrel Spec

Thread Size	2KRE - Tangless			KRE - Tanged		Weight (lbs)
Thread Size	A Length	B Dia.	C Dia.	A Length	B Dia.	Weight (lbs)
Unified Coarse
1-64	2.35	0.14	0.18	---	---	0.04
2-56	3.10	0.24	0.37	3.00	0.25	0.04
4-40	3.10	0.24	0.37	3.02	0.28	0.04
6-32	3.00	0.38	0.37	3.00	0.31	0.04
8-32	3.10	0.32	0.37	3.00	0.31	0.04
10-24	3.00	0.38	0.37	3.01	0.38	0.06
12-24	----	----	----	3.01	0.38	0.06
1/4-20	3.10	0.37	0.44	3.06	0.45	0.06
5/16-18	3.51	0.70	0.70	3.00	3.00	0.06
3/8-16	3.68	0.70	0.70	3.00	4.00	0.06
Unified Fine
0-80	1.83	0.12	0.27	---	---	0.04
10-32	3.10	0.38	0.44	3.00	0.39	0.04
Metric Coarse
M2X.4	2.25	0.24	0.38	----	----	0.04
M2.5X.45	2.65	0.24	0.37	3.00	0.25	0.04
M3X.5	2.70	0.24	0.37	2.98	0.24	0.04
M3.5X6	2.70	0.24	0.37	2.98	0.24	0.04
M4X.7	3.10	0.24	0.37	3.00	0.32	0.04
M5X.8	3.10	0.24	0.37	2.99	0.38	0.04
M6X1	3.10	0.44	0.44	3.01	0.44	0.04
M8X1.25	3.88	0.51	0.51	3.04	0.56	0.06
M10X1.5	4.11	0.61	0.61	---	---	0.06
M12X1.75	4.51	0.69	0.69	---	---	0.06

Cross Reference

Tangless Tools

KATO Part Number	Superseded Part Number	Helicoil Part Number	Accurate Part Number
Unified Coarse
2KREC-02	CT16002-02	7571-02	---
2KREC-02M	CT16410-02BH	---	---
2KREC-04	CT16002-04	7571-04	---
2KREC-04M	CT16410-04BH	---	---
2KREC-06	CT16002-06	7571-06	---
2KREC-06M	CT16410-06BH	---	---
2KREC-2	CT16002-2	7571-2	---
2KREC-2M	CT16410-2BH	---	---
2KREC-3	CT16002-3	7571-3	---
2KREC-3M	CT16410-3	---	---
2KREC-4	CT16002-4	7571-4	---
2KREC-4M	CT16410-4	---	---
Unified Fine
2KREF-F3	CT16003-3	7572-3	---
2KREF-F3M	CT16411-3	---	---
2KREF-L3	CT16003-3	7572-3	---
2KREF-L3M	CT16411-3	---	---
Metric Coarse
2KREM-F2	---	---	---
2KREM-F2.5	CT16002-M2.5F	7587-2.5	2CT10-M2.5F
2KREM-L2.5	CT16002-M2.5L	7587-2.5S	2CT10-M2.5L
2KREM-F3	CT16002-M3F	7587-3	2CT10-M3F
2KREM-L3	CT16002-M3L	7587-3S	2CT10-M3L
2KREM-F4	CT16002-M4F	7587-4	2CT10-M4F
2KREM-L4	CT16002-M4L	7587-4S	2CT10-M4F
2KREM-F5	CT16002-M5F	7587-5	2CT10-M5F
2KREM-L5	CT16002-M5L	7587-5S	2CT10-M5L
2KREM-F6	CT16002-M6F	7587-6	2CT10-M6F
2KREM-L6	CT16002-M6L	7587-6S	2CT10-M6L
2KREM-F8	CT16002-M8F	---	2CT10-M8F
2KREM-L8	CT16002-M8L	---	2CT10-M8L
2KREM-F10	---	---	---
2KREM-L10	---	---	---
2KREM-F12	---	---	---
2KREM-L12	---	---	---

Tanged Tools

KATO Part Number	Superseded Part Number	Helicoil Part Number
Unified Coarse
KREC-02	CTSB-02C	8051-02
KREC-04	CTSB-04C	8051-04
KREC-06	CTSB-06C	8051-06
KREC-1	CTSB-1C	8051-1
KREC-2	CTSB-2C	8051-2
KREC-3	CTSB-3C	8051-3
KREC-4	CTSB-4C	8051-4
Unified Fine
KREF-3	CTSB-3F	10089-3
KREF-4	CTSB-4F	10089-4
Metric Coarse
KREM-2.5	CTSB-M2.5	---
KREM-3	CTSB-M3	---
KREM-3.5	CTSB-M3.5	---
KREM-4	CTSB-M4	---
KREM-5	CTSB-M5	---
KREM-6	CTSB-M6	---
KREM-8	CTSB-M8X1.25C	---

Notes:

KATO SBT-50 Power Transformer (CT5407) cross references to Helicoil (8050-50) part number.
KATO CT5405 cross references to Helicoil 8050-400C part number.
KATO CT5406 cross reference to Helicoil 8050-650C part number.