KURT MT4
MINILOCK 0
.688″ HEX 1/4″-20 SCREW MODULAR ANGLOCK VISE NOS!!
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New in manufactures packaging. see pictures for actual condition.  The set includes 6 screws and 6 cam actuated hex inserts, clamping jaw made from rugged Ampco 18 aluminum bronze as shown (1 kit).   With a torque of 11 ft-lbs these have a force of 987 pounds.
This listing is for ONE (1) Kurt MT4 .688″ HEX 1/4-20 SCREW MINILOCK KIT.
Thanks for looking!!
From the manufacturer:
The versatile MiniLock can be used in single holding, double holding or multiples of both single and double holding applications.
• Ideal for hard fixturing as well as for palletizing small parts to be loaded into receivers on machine tables
• The clamp jaw is made from rugged Amco 18 aluminum bronze and the flathead screw is a special alloy steel
• MADE IN USA
Unlike many competitive cam action models, this product employs the same AngLock concept as the world famous Kurt vises. When a quarter turn is applied to the screw, the split clamp jaw is forced both laterally and down, precisely clamping the part and preventing part lift at the same time. In-house tests showed zero lift when the MiniLock was used in several grinding operations.
Features:
• By using stationary blocks or pins, two parts may be clamped by a single MiniLock.
• The versatile MiniLock can be used in single holding, double holding or multiples of both single and double holding applications.
• Ideal for dedicated fixturing as well as for palletizing small parts to be loaded into receivers on machine tables.
• Through the use of a variety of locating blocks, workstops and MiniLocks, several similar parts or a part “family” can be located on a single pallet.
• Clamping jaw made from rugged Ampco 18 aluminum bronze.
• Actuating screw is made from a special alloy steel.
• While one pallet of parts is being machined, the operator can be unloading and loading a second similarly configured pallet away from the machine tool.
• Steps may be machined into the clamp jaw for operations that require parts to be raised above the pallet or machine table.
• The low profile allows for machining of complete top surfaces of parts without having to re-clamp.
• Conveniently uses standard thread sizes and standard hex keys.
• One MiniLock package contains six MiniLocks.
• This item is for the Inch version, a metric version available.
Specifications:
(in Inches)
* Approx. Thread Engagement
0.25
45Ø Thread Chamfer Dia.
0.3
Hex Size
0.688
Hex Thickness
0.188
Hex Wrench Size
0.156
Max. Distance from Screw CL
0.35
Max. Part Size Differential Double Clamp
0.01
Min. Distance from Screw CL
0.308
*Max. Part Size Differential Double Clamp
0.02
Screw Length
0.625
Screw Size
1/4-20
*C’Bore Depth ±.020 (±50mm)
0.156
*C’Bore Dia. +.015 -.005 (-.39 -.13mm)
0.281
Suggested Tapped Hole Loc. From Edge of Part
0.324