QCS Workholding LLC
18611 West Windhaven Terrace Trail
Cyress  Texas   77433

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ATLAS ACME SERRATED HARD AND SOFT TOP JAWS
T-NUTS AND KEYS

 

Soft Jaws
Chuck Size Part Number Length A Height B Width C Tongue D Bolt Size E Hole Spacing F Key Slot G
8" 7749-22038 3.75" 2.0" 1.5" .67" 1/2" 1.25 .601"
10" 7749-26047 4.12" 2.31" 1.75" .75" 1/2" 1.75" 1.031"
12" 7749-32056 5.12" 2.31" 1.75" .875" 5/8" 2.0" 1.031"
15", 18" & 20" 8140-40533 6.0" 3.31" 2.5" 1.0" 3/4" 2.5" 1.531"
21"-Up 8140-50533 6.0" 3.31" 3.0" 1.25" 7/8" 3.0" 1.531"
                 
Chuck Size Part Number H Tapped Hole T Offset Pointed
Part Number
Offset Pointed
A
H Extra High
Part Number
Extra High
B
8" 7749-22038 2.12" 10-24 7749-22038OP N/A   7749-22038EH N/A
10" 7749-26047 2.12" 5/16"-18 7749-26047OP 5.5" 3.5" 7749-26047EH 3.31"
12" 7749-32056 2.87" 5/16"-18 7749-32056OP 5.5" 3.25" 7749-32056EH 3.31"
15", 18" & 20" 8140-40533 2.62" 3/8"-16 8140-40533OP 7.5" 4.25" 8140-40533EH 4.81"
21"-Up 8140-50533 2.62" 3/8"-16 8140-50533OP 7.5" 4.25" 8140-50533EH 4.81"


ard Top Jaws
Chuck Size Part Number Length A Height B Width C Tongue D Slot E Bolt Spacing F
8" 7749-22036 3.50" 2.0" 1.75" .67" .601" 1.25"
10" 7749-26042 4.25" 2.50" 1.75" .75" 1.031" 1.75"
12" 7749-32052 4.87" 2.50" 1.75" .87" 1.031" 2.0"
15", 18" & 20" 8130-40632 5.5" 3.31" 2.5" 1.0" 1.531" 2.5"
21" & Up 8130-50532 6.5" 3.31" 2.5" 1.25" 1.531" 3.0"

T-Nuts
Chuck Size Part Number Length A Height B Width C Neck D Bolt Size E Hole Spacing F Shoulder G
8" 2749-02407 2.0" 1.0" .94" .670" 1/2"-13 1.25" .44"
10" 2749-02417 2.5" .64" .94" .678" 1/2"-13 1.75" .38"
12" 2749-02427 3.0" .74" 1.06" .802" 5/8"-11 2.0" .44"
15", 18" & 20" 8130-40531 3.5" .93" 1.25" .933" 3/4"-10 2.5" .55"
21" & Up 8130-50531 4.25" 1.18" 1.55" 1.159" 7/8"-9 3.0" .68"



 

Keys
Chuck Size Part Number Length A Height B Width C Neck D Bolt Size E
8" 2749-02405 1.5" .38" .6" .156" 10–24
10" & 12" 2749-02415 1.70" .5" 1.030" .25" 5/16"-18
12" 2749-02425 2.25" .5" 1.030" .25" 5/16"-18
15” & Up 8130-40530 2.87" .5" 1.530" .25" 3/8"-16


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