1.5mm X 60° Serrated Jaws & Jaw Nuts
1.5mm x 60° Serrated Jaws — Style P
1.5mm x 60° Serrated Pie Jaws® — Style Q
1.5mm x 60° Serrated Hard Jaws©
1.5mm x 60° Serrated Single Step Hard Jaws©
1.5mm x 60° Serrated Jaw Nuts©
1.5mm X 60° Serrated Jaws — Style P
Made with 6061 T-6 condition aluminum or 1018 steel
Add SQ suffix to part # for square nosed version

Dimensions in inches unless otherwise noted
A B C D F G
CHUCK
ALUMINUM PART#
STEEL PART#
 WIDTH HEIGHT LENGTH SLOT HOLE SPACING BOLT SIZE
4 Quote
KTT4A
 Quote
KTT4S
 1 1 2 0.315 0.591 6mm
Quote
KTT4A1
 Quote
KTT4S1
 1 2 2 0.315 0.591 6mm
Quote
KW4A
 Quote
KW4S
 1 1 1/2 2 0.394 0.551 8mm
Quote
KW4A1
 Quote
KW4S1
 1 3 2 0.394 0.551 8mm
5 Quote
KTT5A
 Quote
KTT5S
 1 1 1/2 2 1/2 0.394 0.709 8mm
Quote
KTT5A1
 Quote
KTT5S1
 1 3 2 1/2 0.394 0.709 8mm
Quote
HAR5MSHA
 Quote
HAR5MSHS
 1 1 1/4 2.77 0.394 0.709 8mm
Quote
HOW5A
 Quote
HOW5S
 1 1 1/2 2 1/2 0.394 0.748 8mm
Quote
HOW5A1
 Quote
HOW5S1
 1 3 2 1/2 0.394 0.748 8mm
Quote
SUG5ASTS
 Quote
SUG5SSTS
 1 1 1/2 2 1/2 0.433 0.669 8mm
6 Quote
HOW6A
 Quote
HOW6S
 1 1/4 1 1/2 3 0.433 0.787 10mm
Quote
HOW6A1
 Quote
HOW6S1
 1 1/4 3 3 0.433 0.787 10mm
Quote
SUG6ASTS
 Quote
SUG6SSTS
 1 1/4 1 1/2 3 0.433 0.984 8mm
Quote
SUG6A1STS
 Quote
SUG6S1STS
 1 1/4 2 3 0.433 0.984 8mm
Quote
SUG6A2STS
 Quote
SUG6S2STS
 1 1/4 3 3 0.433 0.984 8mm
Quote
KTT6A
 Quote
KTT6S
 1 1/4 1 1/2 3 0.472 0.787 10mm
Quote
KTT6ASQ
 Quote
KTT6SSQ
 1 1/4 1 1/2 3 0.472 0.787 10mm
Quote
KTT6A1
 Quote
KTT6S1
 1 1/4 2 3 0.472 0.787 10mm
Quote
KTT6A1SQ
 Quote
KTT6S1SQ
 1 1/4 2 3 0.472 .787 10mm
Quote
KTT6A2
 Quote
KTT6S2
 1 1/4 3 3 0.472 0.787 10mm
Quote
KTT6A2SQ
 Quote
KTT6S2SQ
 1 1/4 3 3 0.472 0.787 10mm
Quote
HAR6MSHA
 Quote
HAR6MSHS
 1 1/4 1 1/2 3.09 0.472 0.787 10mm
8 Quote
KTT8A
 Quote
KTT8S
 1 1/2 2 4 0.551 0.984 12mm
Quote
KTT8ASQ
 Quote
KTT8SSQ
 1 1/2 2 4 0.551 0.984 12mm
Quote
KTT8A1
 Quote
KTT8S1
 1 1/2 3 4 0.551 0.984 12mm
Quote
KTT8A1SQ
 Quote
KTT8S1SQ
 1 1/2 3 4 0.551 0.984 12mm
Quote
KTT8A2
 Quote
KTT8S2
 1 1/2 4 4 0.551 0.984 12mm
Quote
KTT8A2SQ
 Quote
KTT8S2SQ
 1 1/2 4 4 0.551 0.984 12mm
Quote
HAR8MSHA
 Quote
HAR8MSHS
 1 1/2 2 3.76 0.551 0.984 12mm
Quote
SUG8ASTS
 Quote
SUG8SSTS
 1 1/2 2 4 0.551 1.181 10mm
Quote
SUG8A1STS
 Quote
SUG8S1STS
 1 1/2 3 4 0.551 1.181 10mm
Quote
HOW27M88A
 Quote
HOW27M88S
 1 1/2 2 4 0.630 0.984 12mm
Quote
HOW27M88ASQ
 Quote
HOW27M88SSQ
 1 1/2 2 4 0.630 0.984 12mm
Quote
HOW27M88A1
 Quote
HOW27M88S1
 1 1/2 3 4 0.630 0.984 12mm
Quote
HOW27M88A1SQ
 Quote
HOW27M88S1SQ
 1 1/2 3 4 0.630 0.984 12mm
10 Quote
KTT10A
 Quote
KTT10S
 1 1/2 2 4 1/2 0.630 1.181 12mm
Quote
KTT10ASQ
 Quote
KTT10SSQ
 1 1/2 2 4 1/2 0.630 1.181 12mm
Quote
KTT10A1
 Quote
KTT10S1
 1 1/2 3 4 1/2 0.630 1.181 12mm
Quote
KTT10A1SQ
 Quote
KTT10S1SQ
 1 1/2 3 4 1/2 0.630 1.181 12mm
Quote
KTT10A3
 Quote
KTT10S3
 2 3 5 1/2 0.630 1.181 12mm
Quote
KTT10A4
 Quote
KTT10S4
 1 1/2 4 4 1/2 0.630 1.181 12mm
Quote
KTT10A4SQ
 Quote
KTT10S4SQ
 1 1/2 4 4 1/2 0.630 1.181 12mm
Quote
KTT10A6
 Quote
KTT10S6
 1 1/2 6 4 1/2 0.630 1.181 12mm
Quote
HAR10MSHA
 Quote
HAR10MSHS
 1 1/2 2 4.56 0.630 1.181 12mm
Quote
MTT10A
 Quote
MTT10S
 1 1/2 2 4 1/2 0.630 1.260 12mm
Quote
MTT10A1
 Quote
MTT10S1
 1 1/2 3 4 1/2 0.630 1.260 12mm
Quote
HOW27M10A
 Quote
HOW27M10S
 1 1/2 2 4 1/2 0.709 1.181 14mm
Quote
HOW27M10A1
 Quote
HOW27M10S1
 1 1/2 3 4 1/2 0.709 1.181 14mm
12 Quote
KTT12A
 Quote
KTT12S
 2 2 5 1/2 0.709 1.181 14mm
Quote
KTT12ASQ
 Quote
KTT12SSQ
 2 2 5 1/2 0.709 1.181 14mm
Quote
KTT12A1
 Quote
KTT12S1
 2 3 5 1/2 0.709 1.181 14mm
Quote
KTT12A1SQ
 Quote
KTT12S1SQ
 2 3 5 1/2 0.709 1.181 14mm
Quote
KTT12A4
 Quote
KTT12S4
 2 4 5 1/2 0.709 1.181 14mm
Quote
KTT12A4SQ
 Quote
KTT12S4SQ
 2 4 5 1/2 0.709 1.181 14mm
Quote
SEIKI12A
 Quote
SEIKI12S
 1 1/2 2 4 1/4 0.709 1.260 14mm
Quote
SEIKI12A1
 Quote
SEIKI12S1
 1 1/2 3 4 1/4 0.709 1.260 14mm
Quote
SUG12ASTM
 Quote
SUG12SSTM
 2 2 5 1/2 0.788 1.378 12mm
Quote
KTTB212A
 Quote
KTTB212S
 2 2 5 1/2 0.827 1.181 16mm
Quote
KTTB212ASQ
 Quote
KTTB212SSQ
 2 2 5 1/2 0.827 1.181 16mm
Quote
KTTB212A1
 Quote
KTTB212S1
 2 3 5 1/2 0.827 1.181 16mm
Quote
KTTB212A1SQ
 Quote
KTTB212S1SQ
 2 3 5 1/2 0.827 1.181 16mm
Quote
KTTB212A4
 Quote
KTTB212S4
 2 4 5 1/2 0.827 1.181 16mm
Quote
KTTB212A4SQ
 Quote
KTTB212S4SQ
 2 4 5 1/2 0.827 1.181 16mm
Quote
HOW27M12A
 Quote
HOW27M12S
 2 2 5 1/2 0.827 1.378 16mm
Quote
HOW27M12A1
 Quote
HOW27M12S1
 2 3 5 1/2 0.827 1.378 16mm
14 Quote
SUG14ASTG
 Quote
SUG14SSTG
 2 3 6 5/16 0.827 1.772 16mm
15-18 Quote
KTT15A
 Quote
KTT15S
 2 1/2 3 6 1/2 0.866 1.693 20mm
Quote
KTT15ASQ
 Quote
KTT15SSQ
 2 1/2 3 6 1/2 0.866 1.693 20mm
Quote
KTT15A1
 Quote
KTT15S1
 2 1/2 4 6 1/2 0.866 1.693 20mm
Quote
KTT15A1SQ
 Quote
KTT15S1SQ
 2 1/2 4 6 1/2 0.866 1.693 20mm
Quote
KTT15A6
 Quote
KTT15S6
 2 1/2 6 6 1/2 0.866 1.693 20mm
Quote
KTTB215A
 Quote
KTTB215S
 2 1/2 3 6 1/2 1.004 1.693 20mm
Quote
KTTB215ASQ
 Quote
KTTB215SSQ
 2 1/2 3 6 1/2 1.004 1.693 20mm
Quote
KTTB215A1
 Quote
KTTB215S1
 2 1/2 4 6 1/2 1.004 1.693 20mm
Quote
KTTB215A1SQ
 Quote
KTTB215S1SQ
 2 1/2 4 6 1/2 1.004 1.693 20mm
1.5mm x 60° Serrated Jaws — Style P
1.5mm x 60° Serrated Pie Jaws® — Style Q
1.5mm x 60° Serrated Hard Jaws©
1.5mm x 60° Serrated Single Step Hard Jaws©
1.5mm x 60° Serrated Jaw Nuts©
1.5mm X 60° Serrated Pie Jaws® — Style Q
Made with 319 cast aluminum, cast iron, 1018 steel or A36 steel
Add CI prefix to aluminum part # for cast iron jaws
Add ST prefix to aluminum part # for steel jaws
Cast iron version weight is approximately 2.6 times that of aluminum
Steel version weight is approximately 2.8 times that of aluminum

Dimensions in inches unless otherwise noted • Weights in lbs.
A B D F G J
CHUCK
ALUMINUM PART#
 DIAMETER HEIGHT SLOT HOLE SPACING BOLT SIZE WEIGHT
4 Quote
KTT4P
 6 2 0.315 0.591 6mm 1 5.7
Quote
KTT4P1
 6 4 0.315 0.591 6mm 1 10.8
Quote
KW4P
 6 2 0.394 0.551 8mm 1 5.7
Quote
KW4P1
 6 4 0.394 0.551 8mm 1 10.8
5 Quote
KTT5P
 6 2 0.394 0.709 8mm 1 1/8 5.7
Quote
KTT5P1
 6 4 0.394 0.709 8mm 1 1/8 10.8
Quote
HAR5MSHP
 6 2 0.394 0.709 8mm 1 11/16 5.7
Quote
HAR5MSHP1
 6 4 0.394 0.709 8mm 1 11/16 10.8
Quote
HOW5P
 6 2 0.394 0.748 8mm 1 5.7
Quote
HOW5P1
 6 4 0.394 0.748 8mm 1 10.8
Quote
SUG5PSTS
 6 2 0.433 0.669 8mm 1 27/32 5.7
Quote
AUTOBHM5P
 6 2 0.472 0.630 8mm 1 3/8 5.7
6 Quote
SUG6PSTS
 6 2 0.433 0.984 8mm 1 3/8 5.7
Quote
SUG6P1STS
 6 4 0.433 0.984 8mm 1 3/8 10.8
Quote
KTT6P
 6 2 0.472 0.787 10mm 1 21/32 5.7
Quote
KTT6P1
 6 4 0.472 0.787 10mm 1 21/32 10.8
Quote
KTT8-6P
 8 2 0.472 0.787 10mm 1 21/32 10.2
Quote
KTT8-6P1
 8 4 0.472 0.787 10mm 1 21/32 19.8
Quote
KTT10-6P
 10 2 0.472 0.787 10mm 1 21/32 16.2
Quote
HAR6MSHP
 6.5 2 0.472 0.787 10mm 1 15/16 6.6
Quote
HAR6MSHP1
 6.5 4 0.472 0.787 10mm 1 15/16 12.6
8 Quote
KTT8P
 8 2 0.551 0.984 12mm 2 10.2
Quote
KTT8P1
 8 4 0.551 0.984 12mm 2 19.8
Quote
KTT8P6
 8 6 0.551 0.984 12mm 2 29.4
Quote
KTT10-8P
 10 2 0.551 0.984 12mm 2 16.2
Quote
KTT10-8P1
 10 4 0.551 0.984 12mm 2 31.5
Quote
KTT12-8P
 12 2 0.551 0.984 12mm 2 23.4
Quote
KTT12-8P1
 12 4 0.551 0.984 12mm 2 45.3
Quote
HAR8MSHP
 8 2 0.551 0.984 12mm 2 17/64 10.2
Quote
HAR8MSHP1
 8 4 0.551 0.984 12mm 2 17/64 19.8
Quote
SUG8PSTS
 8 2 0.551 1.181 10mm 1 27/32 10.2
Quote
SUG8P1STS
 8 4 0.551 1.181 10mm 1 27/32 19.8
Quote
HOW27M88P
 8 2 0.630 0.984 12mm 2 10.2
Quote
HOW27M88P1
 8 4 0.630 0.984 12mm 2 19.8
Quote
AUTOBHM8P
 8 2 0.669 0.906 12mm 2 1/2 10.2
Quote
AUTOBHM8P1
 8 4 0.669 0.906 12mm 2 1/2 19.8
10 Quote
KTT10P
 10 2 0.630 1.181 12mm 2 1/2 16.2
Quote
KTT10P1
 10 4 0.630 1.181 12mm 2 1/2 31.5
Quote
KTT10P6
 10 6 0.630 1.181 12mm 2 1/2 46.8
Quote
KTT12-10P
 12 2 0.630 1.181 12mm 2 1/2 23.4
Quote
KTT12-10P1
 12 4 0.630 1.181 12mm 2 1/2 45.3
Quote
KTT15-10P
 15 3 0.630 1.181 12mm 2 1/2 53.7
Quote
KTT15-10P1
 15 4 0.630 1.181 12mm 2 1/2 70.8
Quote
KTT18-10P
 18 3 0.630 1.181 12mm 2 1/2 77.7
Quote
KTT18-10P1
 18 4 0.630 1.181 12mm 2 1/2 102.6
Quote
HAR10MSHP
 10 2 0.630 1.181 12mm 2 3/4 16.2
Quote
HAR10MSHP1
 10 4 0.630 1.181 12mm 2 3/4 31.5
Quote
MTT10P
 10 2 0.630 1.260 12mm 2 7/8 16.2
Quote
MTT10P1
 10 4 0.630 1.260 12mm 2 7/8 31.5
Quote
HOW27M10P
 10 2 0.709 1.181 14mm 3 16.2
Quote
HOW27M10P1
 10 4 0.709 1.181 14mm 3 315
Quote
AUTO10P
 10 2 0.827 1.181 16mm 3 16.2
12 Quote
KTT12P
 12 2 0.709 1.181 14mm 3 1/2 23.4
Quote
KTT12P1
 12 4 0.709 1.181 14mm 3 1/2 45.3
Quote
KTT15-12P
 15 3 0.709 1.181 14mm 3 1/2 53.7
Quote
KTT15-12P1
 15 4 0.709 1.181 14mm 3 1/2 70.8
Quote
KTT18-12P
 18 3 0.709 1.181 14mm 3 1/2 77.7
Quote
KTT18-12P1
 18 4 0.709 1.181 14mm 3 1/2 102.6
Quote
KTT21-12P2
 21 2 0.709 1.181 14mm 3 1/2 71.4
Quote
KTT21-12P
 21 3 0.709 1.181 14mm 3 1/2 105.0
Quote
KTT21-12P1
 21 4 0.709 1.181 14mm 3 1/2 139.2
Quote
SEIKI12P
 12 2 0.709 1.260 14mm 3 1/8 23.4
Quote
SUG12PSTM
 12 2 0.788 1.378 12mm 3 7/16 23.4
Quote
SUG12P1STM
 12 4 0.788 1.378 12mm 3 7/16 45.3
Quote
KTTB212P
 12 2 0.827 1.181 16mm 3 1/2 23.4
Quote
KTTB212P1
 12 4 0.827 1.181 16mm 3 1/2 45.3
Quote
KTT15B212P
 15 3 0.827 1.181 16mm 3 1/2 53.7
Quote
KTT15B212P1
 15 4 0.827 1.181 16mm 3 1/2 70.8
Quote
KTT18B212P
 18 3 0.827 1.181 16mm 3 1/2 77.7
Quote
KTT18B212P1
 18 4 0.827 1.181 16mm 3 1/2 102.6
Quote
KTT21B212P2
 21 2 0.827 1.181 16mm 3 1/2 71.4
Quote
KTT21B212P
 21 3 0.827 1.181 16mm 3 1/2 105.0
Quote
KTT21B212P1
 21 4 0.827 1.181 16mm 3 1/2 139.2
Quote
HOW27M12P
 12 2 0.827 1.378 16mm 2 3/4 23.4
Quote
HOW27M12P1
 12 4 0.827 1.378 16mm 2 3/4 45.3
14 Quote
SUG14PSTG
 15 3 0.827 1.772 16mm 4 3/16 53.7
15 Quote
KTT15P2
 15 2 0.866 1.693 20mm 4 5/16 36.6
Quote
KTT15P
 15 3 0.866 1.693 20mm 4 5/16 53.7
Quote
KTT15P1
 15 4 0.866 1.693 20mm 4 5/16 70.8
Quote
KTT15P6
 15 6 0.866 1.693 20mm 4 5/16 105.0
Quote
KTT15P8
 15 8 0.866 1.693 20mm 4 5/16 138.0
Quote
KTT18-15P
 18 3 0.866 1.693 20mm 4 5/16 77.7
Quote
KTT18-15P1
 18 4 0.866 1.693 20mm 4 5/16 102.6
Quote
KTT21-15P2
 21 2 0.866 1.693 20mm 4 5/16 71.4
Quote
KTT21-15P
 21 3 0.866 1.693 20mm 4 5/16 105.0
Quote
KTT21-15P1
 21 4 0.866 1.693 20mm 4 5/16 139.2
Quote
KTT24-15P2
 24 2 0.866 1.693 20mm 4 5/16 93.0
Quote
KTT24-15P
 24 3 0.866 1.693 20mm 4 5/16 138.0
Quote
KTT24-15P1
 24 4 0.866 1.693 20mm 4 5/16 182.4
Quote
KTTB215P2
 15 2 1.004 1.693 20mm 4 5/16 36.6
Quote
KTTB215P
 15 3 1.004 1.693 20mm 4 5/16 53.7
Quote
KTTB215P1
 15 4 1.004 1.693 20mm 4 5/16 70.8
Quote
KTT18B215P
 18 3 1.004 1.693 20mm 4 5/16 77.7
Quote
KTT18B215P1
 18 4 1.004 1.693 20mm 4 5/16 102.6
Quote
KTT21B215P
 21 3 1.004 1.693 20mm 4 5/16 105.0
18 Quote
KTT18P
 18 3 0.866 1.693 20mm 4 1/8 77.7
Quote
KTT18P1
 18 4 0.866 1.693 20mm 4 1/8 102.6
Quote
KTT21-18P2
 21 2 0.866 1.693 20mm 4 1/8 71.4
Quote
KTT21-18P
 21 3 0.866 1.693 20mm 4 1/8 105.0
Quote
KTT21-18P1
 21 4 0.866 1.693 20mm 4 1/8 139.2
Quote
KTT24-18P2
 24 2 0.866 1.693 20mm 4 1/8 93.0
Quote
KTT24-18P
 24 3 0.866 1.693 20mm 4 1/8 138.0
Quote
KTT24-18P1
 24 4 0.866 1.693 20mm 4 1/8 182.4
1.5mm x 60° Serrated Jaws — Style P
1.5mm x 60° Serrated Pie Jaws® — Style Q
1.5mm x 60° Serrated Hard Jaws©
1.5mm x 60° Serrated Single Step Hard Jaws©
1.5mm x 60° Serrated Jaw Nuts©
1.5mm X 60° Serrated Hard Jaws
Made with 1018 case hardened steel

Dimensions in inches unless otherwise noted
A B C D F G K L
CHUCK
PART#
 WIDTH HEIGHT LENGTH SLOT HOLE SPACING BOLT SIZE STEP 1 STEP 2
6 Quote
KTT6HJDS
 1.13 1.73 2.85 0.472 0.787 10mm 0.42 0.86
8 Quote
KTT8HJDS
 1.50 2.23 3.17 0.551 0.984 12mm 0.63 1.25
10 Quote
KTT10HJDS
 1.50 2.73 3.99 0.630 1.181 12mm 0.75 1.50
12 Quote
KTT12HJDS
 2.00 2.48 4.16 0.709 1.181 14mm 0.68 1.36
Quote
KTTB212HJDS
 2.00 2.75 4.13 0.827 1.181 16mm 0.75 0.75
15 Quote
KTT15HJDS
 2.50 2.98 5.88 0.866 1.693 20mm 0.75 1.54
Quote
KTTB215HJDS
 2.50 2.98 5.88 1.004 1.693 20mm 0.75 1.54
1.5mm x 60° Serrated Jaws — Style P
1.5mm x 60° Serrated Pie Jaws® — Style Q
1.5mm x 60° Serrated Hard Jaws©
1.5mm x 60° Serrated Single Step Hard Jaws©
1.5mm x 60° Serrated Jaw Nuts©
1.5mm X 60° Serrated Single Step Hard Jaws
Made with 1018 case hardened steel

Dimensions in inches unless otherwise noted
A B C D F G K
CHUCK
PART#
 WIDTH HEIGHT LENGTH SLOT HOLE SPACING BOLT SIZE STEP 1
6 Quote
KTT6HJSS
 1.13 1.50 2.85 0.472 0.787 10mm 0.48
8 Quote
KTT8HJSS
 1.50 1.98 3.16 0.551 0.984 12mm 0.75
10 Quote
KTT10HJSS
 1.50 1.98 3.99 0.630 1.181 12mm 0.76
12 Quote
KTT12HJSS
 2.00 1.98 4.16 0.709 1.181 14mm 0.83
15 Quote
KTT15HJSS
 2.50 2.48 5.88 0.866 1.693 20mm 0.93
1.5mm x 60° Serrated Jaws — Style P
1.5mm x 60° Serrated Pie Jaws® — Style Q
1.5mm x 60° Serrated Hard Jaws©
1.5mm x 60° Serrated Single Step Hard Jaws©
1.5mm x 60° Serrated Jaw Nuts©
Jaw Nuts For 1.5mm X 60° Serrated Chucks
Made with 4140 steel

Dimensions in inches unless otherwise noted
A B C D F G M
CHUCK
PART#
 WIDTH HEIGHT LENGTH TONGUE HOLE SPACING BOLT SIZE FLANGE
6 Quote
KTT6JN
 0.69 0.87 1.44 0.472 0.787 10mm 0.295
8 Quote
KTT8JN
 0.80 1.00 1.87 0.551 0.984 12mm 0.335
Quote
KTTB208JN
 0.81 0.81 1.83 0.551 0.984 12mm 0.335
Quote
HOW27M88JN
 0.91 1.00 2.00 0.630 0.984 12mm 0.335
10 Quote
KTT10JN
 0.87 1.00 2.05 0.630 1.181 12mm 0.335
Quote
KTTB210JN
 0.89 0.85 2.01 0.630 1.181 12mm 0.335
12 Quote
KTT12JN
 1.04 1.30 2.25 0.709 1.181 14mm 0.530
Quote
KTTB212JN
 1.16 0.86 2.19 0.827 1.181 16mm 0.217
15 Quote
KTT15JN
 1.32 1.79 3.15 0.866 1.693 20mm 0.650