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Square Serrated Key Type
Soft Jaws  |  Full Grips  |  Hard Jaws  |  Jaws Nuts  |  Serrated Master Key
 

 

Square Serrated Key Type
soft jaws

 

Add “A” to beginning of part number when ordering aluminum jaws. Add “P” to end of part number when ordering pointed jaws. Made with 1018 steel or 6061 aluminum.

 

Square Serrated Key Type  |  Soft Jaws


Diameter

Part
Number

L
Length

H
Height

W
Width

B
Slot
Width

F
Bolt
Spacing

S
Key Slot
Width

I
Screw
Size

M
Thread Size

8 DM204570 3.00 2.00 1.25 .501 1.438 .746 3/8 1/4-20
DM204570P 3.00 2.00 1.25 .501 1.438 .746 3/8 1/4-20
DM204002 3.00 3.00 1.25 .501 1.438 .746 3/8 1/4-20
DM204002P 3.00 3.00 1.25 .501 1.438 .746 3/8 1/4-20
DM204001 3.00 2.25 2.00 .501 1.250 .625 1/2 N/A
DM204001P 3.00 2.25 2.00 .501 1.250 .625 1/2 N/A
DM204003 3.00 3.00 2.00 .501 1.250 .625 1/2 N/A
DM204003P 3.00 3.00 2.00 .501 1.250 .625 1/2 N/A
DM204007 3.437 1.75 1.50 .751 1.438 .743 1/2 1/4-20
DM204007P 3.437 1.75 1.50 .751 1.438 .743 1/2 1/4-20
DM204008 3.437 3.00 1.50 .751 1.438 .743 1/2 1/4-20
DM204008P 3.437 3.00 1.50 .751 1.438 .743 1/2 1/4-20
10 DM204009 4.313 2.00 1.75 .751 1.750 .996 1/2 5/16-18
DM204009P 4.313 2.00 1.75 .751 1.750 .996 1/2 5/16-18
DM204010 4.313 4.00 1.75 .751 1.750 .996 1/2 5/16-18
DM204010P 4.313 4.00 1.75 .751 1.750 .996 1/2 5/16-18
DM204011 4.00 2.25 2.00 .626 1.750 .751 1/2 1/4-20
DM204011P 4.00 2.25 2.00 .626 1.750 .751 1/2 1/4-20
DM204012 4.00 4.00 2.00 .626 1.750 .751 1/2 1/4-20
DM204012P 4.00 4.00 2.00 .626 1.750 .751 1/2 1/4-20
10-12 DM204571 4.00 2.25 1.75 .751 1.750 .996 1/2 5/16-18
DM204571P 4.00 2.25 1.75 .751 1.750 .996 1/2 5/16-18
DM215806 4.00 4.00 1.75 .751 1.750 .996 1/2 5/16-18
DM215806P 4.00 4.00 1.75 .751 1.750 .996 1/2 5/16-18
12 DM204015 4.937 2.25 1.75 .751 1.750 .996 5/8 5/16-18
DM204015P 4.937 2.25 1.75 .751 1.750 .996 5/8 5/16-18
DM204016 4.937 4.00 1.75 .751 1.750 .996 5/8 5/16-18
DM204016P 4.937 4.00 1.75 .751 1.750 .996 5/8 5/16-18
DM204019 5.50 2.50 2.00 .751 1.750 .996 1/2 5/16-18
DM204019P 5.50 2.50 2.00 .751 1.750 .996 1/2 5/16-18
DM204020 5.50 4.00 2.00 .751 1.750 .996 1/2 5/16-18
DM204020P 5.50 4.00 2.00 .751 1.750 .996 1/2 5/16-18
DM215813 5.50 2.50 2.00 .751 1.750 .996 5/8 5/16-18
DM215813P 5.50 2.50 2.00 .751 1.750 .996 5/8 5/16-18
DM215814 5.50 4.00 2.00 .751 1.750 .996 5/8 5/16-18
DM215814P 5.50 4.00 2.00 .751 1.750 .996 5/8 5/16-18
DM204021 5.50 2.50 2.00 .751 1.750 .996 5/8 5/16-18
DM204021P 5.50 2.50 2.00 .751 1.750 .996 5/8 5/16-18
DM204022 5.50 4.00 2.00 .751 1.750 .996 5/8 5/16-18
DM204022P 5.50 4.00 2.00 .751 1.750 .996 5/8 5/16-18
DM215815 5.00 2.50 1.75 .751 1.750 .996 5/8 5/16-18
DM215815P 5.00 2.50 1.75 .751 1.750 .996 5/8 5/16-18
DM215816 5.00 4.00 1.75 .751 1.750 .996 5/8 5/16-18
DM215816P 5.00 4.00 1.75 .751 1.750 .996 5/8 5/16-18
15 DM204023 6.00 2.50 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204023P 6.00 2.50 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204024 6.00 4.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204024P 6.00 4.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204572 5.00 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204572P 5.00 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215818 5.00 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215818P 5.00 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215823 6.813 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215823P 6.813 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215824 6.813 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM215824P 6.813 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204025 6.25 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204025P 6.25 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204026 6.25 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
DM204026P 6.25 5.00 2.25 1.001 2.500 1.488 3/4 3/8-16
18 DM204027 5.00 3.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204027P 5.00 3.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204028 5.00 5.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204028P 5.00 5.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204029 6.00 3.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204029P 6.00 3.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204030 6.00 5.00 2.50 1.001 2.500 1.488 3/4 3/8-16
DM204030P 6.00 5.00 2.50 1.001 2.500 1.488 3/4 3/8-16
21-24 DM215825 5.00 3.00 2.25 1.001 3.000 1.488 3/4 3/8-16
DM215825P 5.00 3.00 2.25 1.001 3.000 1.488 3/4 3/8-16
DM215826 5.00 5.00 2.25 1.001 3.000 1.488 3/4 3/8-16
DM215826P 5.00 5.00 2.25 1.001 3.000 1.488 3/4 3/8-16
DM204031 5.00 3.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204031P 5.00 3.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204032 5.00 5.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204032P 5.00 5.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204033 6.25 3.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204033P 6.25 3.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204034 6.25 5.00 2.50 1.001 3.000 1.488 3/4 3/8-16
DM204034P 6.25 5.00 2.50 1.001 3.000 1.488 3/4 3/8-16
24-32 DM204035 6.00 3.00 2.50 1.001 2.625 1.488 3/4 3/8-16
DM204035P 6.00 3.00 2.50 1.001 2.625 1.488 3/4 3/8-16
DM204036 6.00 5.00 2.50 1.001 2.625 1.488 3/4 3/8-16
DM204036P 6.00 5.00 2.50 1.001 2.625 1.488 3/4 3/8-16
28-36 DM204037 6.50 3.50 3.00 1.188 3.000 1.532 7/8 3/8-16
DM204037P 6.50 3.50 3.00 1.188 3.000 1.532 7/8 3/8-16
DM204038 6.50 5.00 3.00 1.188 3.000 1.532 7/8 3/8-16
DM204038P 6.50 5.00 3.00 1.188 3.000 1.532 7/8 3/8-16
 

Square Serrated Key Type
full grips

 

Made with 356 cast aluminum.
Add “C” to beginning of part number when ordering cast iron jaws.
Add “S” to beginning of part number when ordering steel jaws.


Square Serrated Key Type  |  Full Grips


Diameter

Part
Number

H
Height

B
Slot
Width

F
Bolt
Spacing

S
Key Slot
Width

I
Screw
Size

M
Thread Size

Casting

8 DM8ARFG 2.00 .501 1.438 .746 3/8 1/4-20 8"
DM8ARHFG 4.00 .501 1.438 .746 3/8 1/4-20 8"
204007FG 2.00 .751 1.438 .746 1/2 1/4-20 8"
204008FG 4.00 .751 1.438 .746 1/2 1/4-20 8"
10 DM10ARFG 2.00 .751 1.750 .996 1/2 5/16-18 10"
DM10ARHFG 4.00 .751 1.750 .996 1/2 5/16-18 10"
DM10ARFG58 2.00 .751 1.750 .996 5/8 5/16-18 10"
DM10ARHFG58 4.00 .751 1.750 .996 5/8 5/16-18 10"
12 DM12ARFG 2.375 .751 1.750 .996 1/2 5/16-18 12"
DM12ARHFG 4.00 .751 1.750 .996 1/2 5/16-18 12"
DM12ARFG58 2.375 .751 1.750 .996 5/8 5/16-18 12"
DM12ARHFG58 4.00 .751 1.750 .996 5/8 5/16-18 12"
15 DM15ARFG 3.00 1.001 2.500 1.488 3/4 3/8-16 15"
DM15ARHFG 4.00 1.001 2.500 1.488 3/4 3/8-16 15"
18 DM18ARFG 3.00 1.001 2.500 1.488 3/4 3/8-16 18''
DM18ARHFG 4.00 1.001 2.500 1.488 3/4 3/8-16 18''
 

 
Square Serrated Key Type
hard jaws

 

Made with 1018 case hardened steel.
Hard jaws are reversible for OD & ID chucking. All hard jaws are available in one or two step sets. All part #’s listed below are two step sets.



Square Serrated Key Type  |  Hard Jaws


Diameter

Part
Number

L
Length

H
Height

W
Width

B
Slot
Width

F
Bolt
Spacing

S
Key Slot
Width

I
Screw
Size

M
Thread Size

8 DM204007RJ 3.75 2.00 1.50 .751 1.438 .746 1/2 1/4-20
10 DM12AR 3.781 2.50 1.75 .751 1.750 .996 3/8 5/16-18
12 DM12AR58 3.781 2.50 1.75 .751 1.750 .996 5/8 5/16-18
15-18 DM18AR 4.75 3.00 2.25 1.001 2.500 1.488 3/4 3/8-16
21-24 DM21AR 6.00 3.50 2.50 1.001 3.000 1.488 3/4 3/8-16
28-36 DM28AR 6.50 3.50 3.00 1.188 3.000 1.532 7/8 3/8-16
 


 
Square Serrated Key Type
jaw nuts

 

 

 

 

Square Serrated Key Type  |  Jaw Nuts


Diameter

Part
Number

L
Length

H
Height

W
Width

F
Bolt
Spacing

M
Thread Size

T1
Tongue
Width

E
Heel
Height

8 DM8CCJ 2.11 .996 .993 1.438 1/2-13 .750 .376
10-12 DM10/12CCJ 2.43 1.000 1.000 1.750 1/2-13 .750 .375
12 DM12CCJ 2.50 1.000 1.000 1.750 5/8-11 .750 .375
15-18 DM15/18JN 3.75 1.250 1.250 2.500 3/4-10 1.000 .438
21-24 DM21CCJ 4.50 1.250 1.250 3.000 3/4-10 1.000 .438
28-36 DM28CCJ 4.50 1.250 1.562 3.000 7/8-9 1.187 .438
 

 
Square Serrated Key Type
Square Serrated master key

 

 

 

 

Square Serrated Key Type  |  Square Serrated Master Key


Diameter

Part
Number

L
Length

H
Height

W
Width

T
Tongue
Width 1

I
Screw
Size

P
Pitch

A
Slot
Depth

8 DM8SQK 1.313 .375 .744 .098 1/4 .200 .101
DM8CCA 1.406 .435 .744 .075 1/4 .155 .101
10-12 DM12SQK 1.688 .500 .995 .124 5/16 .250 .130
15 DM15SQK 2.00 .500 1.487 .124 3/8 .250 .130
18 DM18SQK 2.25 .500 1.487 .124 3/8 .250 .130
21-24 DM21SQK 2.50 .500 1.487 .124 3/8 .250 .130
28-36 DM28SQK 2.50 .500 1.531 .124 3/8 .250 .130
 


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