The Best of Both Worlds... Exclusive to KATO, the KATO Prewinder Electric tool combines the best features of the air and electric installation tools.The KATO Prewinder Electric tool is the fastest semi-automatic installation system available for helically coiled screw thread inserts (CoilThread, Helicoil, Recoil, etc.)!

The KATO Prewinder Electric (KPE) installation tool is designed for medium to high volume users of KATO Tangless and tanged strip-feed packaged CoilThread inserts (can be used with bulk inserts). The KPE tool is the industry's first and only electric installation tool that utilizes a prewinder, which compresses the insert, allowing for much easier and consistent installation. The KPE tool is comprised of the KATO KFS-12 Electric Driver (CT5408), the SBT-50 Power Transformer (CT5407), the innovative KATO Prewinder Adapter (CT5408-PA), and a Front End Assembly.

In addition, the KPE tool is auto-reversing; once the insert is installed the driver will automatically reverse minimizing overall installation time. The KFS-12 electric driver (CT5408) utilizes a powerful electric motor and two torque adjusting compression springs (one for smaller thread sizes and one for larger thread sizes) to install inserts up to 1/4" and M6 in diameter. The controllable installation torque (which is adjusted through a window in the prewinder adapter) ensures consistent installation and prolongs the life of the mandrel assembly. To see the KATO Prewinder Electric in action! Please visit our Video Workshop in Katopedia.

How to Order - Complete Tool Requires the Following Parts:

SBT-50 Power Transformer

(CT5407)

The SBT-50 Transformer converts standard 110V AC to DC for use with KATO’s CT5405, CT5406, & CT5408 Electric Drivers. Also available in a European model (CT5407-EU), which converts 240V AC to DC.

KFS-12 Electric Driver

(CT5408)

The KFS-12 Electric Driver (CT5408) was designed with strategically located external thread that make using the KATO Prewinder Adapter possible. When used with the Prewinder Adapter and the KPE series components the KATO Prewinder Electric Tool is the fastest installation system for helical coil screw thread inserts (CoilThread, Helicoil, Recoil, etc.)!

Prewinder Adapter

(CT5408-PA)

The KATO Prewinder Adapter is bridge that mates the KFS-12 electric driver and the KATO KPE Series front-end assembly together.

Front End Assembly

(See Part No.)

The KPE Series Front End Assembly comes in a variety of nominal thread sizes up to 1/4” & M6, and is designed to install up 2 Dia. nominal length CoilThread Inserts. For information on specific sizes, see Part Numbers.

Features & Benefits

Fastest installation system on the market.
Available for both Tangless and tanged CoilThread inserts.
Compatiable with screw thread inserts from Helicoil, Recoil and others.
Installs inserts up to 1/4" and M6.
Auto-Reversing for reduced installation time.
KFS-12 electric driver (CT5408) works with existing KATO SBT-50 (CT5407) transformers.
Clean and quiet, ideal for clean room operation.
Utilizes KATO's One Pawl Fits All system. (Tangless only)

Part Numbers

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

Example of a KATO Prewinder Electric tool part number:

2 KPE C - 02

1 2 3 4 5

1 Tool Type	2 Tool Style	3 Thread Designation	4 Size Designation	5 Component / Replacement Part
Blank - For CoilThread (Tanged) 2 - Prefix for CoilThread II Tangless inserts	KHE - KATO Prewinder Hex KPE - KATO Prewinder Electric KRE - KATO Round Electric	C - Unified Coarse F - Unified Fine M - Metric	Chart Below	G - Nylon Guard (where applicable) H - Adusting Sleeve Housing without Nylon Guard (where applicable) M - Mandrel/Mandrel Assembly S - Spacer Set (includes 3 spacers + 1 thick shim + 3 thin shims, where applicable)

How to Order:

SBT-50 Power Transformer (CT5407)
KFS-12 Electric Driver (CT5408)
Prewinder Adapter (CT5408-PA)
Front End Assembly (see table below)
KATO also recommends using the KATO Linear Torque Arm (2KLRM-1)

Thread Size¹	Tangless Front End Assembly	Tangless Replacement Pawl	Tanged Front End Assembly	SBT-50 Power Transformer	Electric Driver	Prewinder Adapter	Linear Torque Arm
Unified Coarse
2-56	2KPEC-02	2KIPC-02	KPEC-02	CT5407²	CT5408	CT5408-PA	2KLRM-1
4-40	2KPEC-04	2KIPC-04	KPEC-04
6-32	2KPEC-06	2KIPC-06	KPEC-06
8-32	2KPEC-2	2KIPC-2	KPEC-2
10-24	2KPEC-3	2KIPC-3	KPEC-3
1/4-20	2KPEC-4	2KIPC-4	KPEC-4
Unified Fine
10-32	2KPEF-3	2KIPF-3	KPEF-3	CT5407²	CT5408	CT5408-PA	2KLRM-1
1/4-28	2KPEF-4	2KIPF-4	KPEF-4	CT5407²	CT5408	CT5408-PA	2KLRM-1
Metric Coarse
M2.5X.45	2KPEM-2.5	2KIPM-2.5	KPEM-2.5	CT5407²	CT5408	CT5408-PA	2KLRM-1
M3X.5	2KPEM-3	2KIPM-3	KPEM-3
M4X.7	2KPEM-4	2KIPM-4	KPEM-4
M5X.8	2KPEM-5	2KIPM-5	KPEM-5
M6X1	2KPEM-6	2KIPM-6	KPEM-6

Please Note:

The Front End Assembly is designed to work with 1, 1.5, and 2 diameter inserts, for 2.5 and 3 diameter inserts please contact KATO for availability.
Use CT5407-EU for European model (240V).

Torque (lbf-in)	rpm @ 30VDC	rpm @ 20VDC	Tap Capacity	Length (Ref.)	Grip Diameter (Ref.)	Weight (Ref.)	Chuck Capacity	Voltage
0.17-6.90	1000	700	M4	8.1"	1.3"	16.5 oz	1/4 Hex"	20-30 VDC

Model	Maximum # of Drivers	Control Box	Input	Output	Size Reference	Weight (Ref.)
Length A	Height B	Width C
U.S	1	Built In	110 VAC	20 VDC / 30 VDC	7.3"	3.5"	4.0"	6 lb
European	1	Built In	240 VAC	20 VDC / 30 VDC	7.3"	3.5"	4.0"	6 lb

Thread Size	Length A	Length B	Diameter C	Diameter D
Unified Coarse
2-56	1.69	0.97	0.18	0.34
4-40	1.69	1.09	0.26	0.40
6-32	1.85	1.25	0.31	0.50
8-32	1.85	1.05	0.35	0.51
10-24	1.85	1.34	0.37	0.51
1/4-20	1.65	1.44	0.42	0.63
Unified Fine
10-32	1.95	1.02	0.38	0.62
1/4-28	1.65	1.23	0.43	0.63
Metric Coarse
M2.5X.45	1.69	1.47	0.39	0.39
M3X.5	1.69	1.38	0.37	0.51
M4X.7	1.65	1.02	0.35	0.49
M5X.8	1.75	1.00	0.24	0.39
M6X1	1.65	1.48	0.39	0.63

Comparison Chart

	CT5430	CT5425	CT5420	CT5408	CT5406	CT5405
Cordless
Brushless Motor
Power Supply / Battery Charger Included
KATO Prewinder Electric
KATO Hex Electric
Designed for Strip-Feed
Utilizes Prewinder Adapter
Insert Size Capability	up to 1/4" & M6	6-32 - 1/2"	up to 1/4" & M6	up to 3/8" & M12	8-32 to 3/8"	2-56 to 8-32
High & Low RPM	1000 / 600	730 / 490	720 / 480	1000 / 700	910 / 600	1000 / 670
Volume (Qty)	Medium to High Strip Feed User	Low to Medium Bulk User	Medium to High Strip Feed User	Medium to High Strip Feed User	Low to Medium Bulk User	Low to Medium Bulk Userr
Weight	17.5 oz¹	14.5 oz	12.6 oz	16.2 oz	28.1 oz	15.6 oz
Length	9.5 in.¹	9 in.	8.5 in.	9 in.	9 in.	11 in.
Chuck	Quick-Disconnect Keyless Chuck	Quick-Disconnect Keyless Chuck	Quick-Disconnect Keyless Chuck	Quick-Disconnect Keyless Chuck	Chuck Key Required	Chuck Key Required
Learn More	KFS-30	KFS-25	KFS-20	KPE & KHE Series	KRE Series	KRE Series