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PEM® PEMFLEX® self-locking, self-clinching fasteners retain their repeated use and effective prevailing locking torque.
PEM all-metal, self-locking fasteners are available in steel, stainless steel, and aluminum. Types LK (steel) and LKS (stainless) are treated with a black dry film lubricant for better locking performance. Type LKA (aluminum) must be used with a lubricated screw. The PEM design utilizes two rugged, semicircular flexing jaws instead of several less-supported segments. The greater ruggedness and retention of this PEMFLEX action prevents relaxation and loosening of the fastener in severe service.
This PEMFLEX design also protects the screw threads. Clearances obtained by only two interruptions of a full circumference, together with the spreading of the jaws by the entering screw, minimize the possibility of thread damage.
- Shoulder provides increased performance.
- Flexing action permits repeated use and effective locking torque.
- Flange provides positive stop during installation.
PEM all-metal, self-locking fasteners are available in steel, stainless steel, and aluminum. Types LK (steel) and LKS (stainless) are treated with a black dry film lubricant for better locking performance. Type LKA (aluminum) must be used with a lubricated screw. The PEM design utilizes two rugged, semicircular flexing jaws instead of several less-supported segments. The greater ruggedness and retention of this PEMFLEX action prevents relaxation and loosening of the fastener in severe service.
This PEMFLEX design also protects the screw threads. Clearances obtained by only two interruptions of a full circumference, together with the spreading of the jaws by the entering screw, minimize the possibility of thread damage.
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Part # |
Thread Size |
A (Shank) Max. |
Hole Size in Sheet + .003 - .000 |
C Max. |
E Nom. |
Fastener Material |
Standard Finish |
CAD |
Inventory |
Add To Cart/Request Quote |
---|---|---|---|---|---|---|---|---|---|---|
LK-256-1MD | N/A .086-56 (#2-56) | N/A .038 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-256-2MD | N/A .086-56 (#2-56) | N/A .054 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-440-1MD | N/A .112-40 (#4-40) | N/A .038 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-440-2MD | N/A .112-40 (#4-40) | N/A .054 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-632-1MD | N/A .138-32 (#6-32) | N/A .038 in | N/A .219 in | N/A .218 in | N/A .312 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-632-2MD | N/A .138-32 (#6-32) | N/A .054 in | N/A .219 in | N/A .218 in | N/A .312 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-832-1MD | N/A .164-32 (#8-32) | N/A .038 in | N/A .266 in | N/A .265 in | N/A .343 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-832-2MD | N/A .164-32 (#8-32) | N/A .054 in | N/A .266 in | N/A .265 in | N/A .343 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-032-1MD | N/A .190-32 (#10-32) | N/A .038 in | N/A .312 in | N/A .311 in | N/A .375 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LK-032-2MD | N/A .190-32 (#10-32) | N/A .054 in | N/A .312 in | N/A .311 in | N/A .375 in | N/A Carbon Steel | N/A Black, Dry-film Lubricant over Zinc Phosphate |
N/A ![]() |
N/A {0} |
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LKS-256-1MD | N/A .086-56 (#2-56) | N/A .038 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
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Request Quote |
LKS-256-2MD | N/A .086-56 (#2-56) | N/A .054 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-440-1MD | N/A .112-40 (#4-40) | N/A .038 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-440-2MD | N/A .112-40 (#4-40) | N/A .054 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-632-1MD | N/A .138-32 (#6-32) | N/A .038 in | N/A .219 in | N/A .218 in | N/A .312 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-632-2MD | N/A .138-32 (#6-32) | N/A .054 in | N/A .219 in | N/A .218 in | N/A .312 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-832-1MD | N/A .164-32 (#8-32) | N/A .038 in | N/A .266 in | N/A .265 in | N/A .343 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-832-2MD | N/A .164-32 (#8-32) | N/A .054 in | N/A .266 in | N/A .265 in | N/A .343 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-032-1MD | N/A .190-32 (#10-32) | N/A .038 in | N/A .312 in | N/A .311 in | N/A .375 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKS-032-2MD | N/A .190-32 (#10-32) | N/A .054 in | N/A .312 in | N/A .311 in | N/A .375 in | N/A 300 Series Stainless Steel | N/A Black, Dry-film Lubricant |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKA-256-1 | N/A .086-56 (#2-56) | N/A .038 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A 7075-T6 Aluminum | N/A Plain |
N/A ![]() |
N/A {0} |
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LKA-256-2 | N/A .086-56 (#2-56) | N/A .054 in | N/A .172 in | N/A .171 in | N/A .250 in | N/A 7075-T6 Aluminum | N/A Plain |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKA-440-1 | N/A .112-40 (#4-40) | N/A .038 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A 7075-T6 Aluminum | N/A Plain |
N/A ![]() |
N/A {0} |
Add To Cart
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LKA-440-2 | N/A .112-40 (#4-40) | N/A .054 in | N/A .187 in | N/A .186 in | N/A .250 in | N/A 7075-T6 Aluminum | N/A Plain |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
LKA-632-1 | N/A .138-32 (#6-32) | N/A .038 in | N/A .219 in | N/A .218 in | N/A .312 in | N/A 7075-T6 Aluminum | N/A Plain |
N/A ![]() |
N/A {0} |
Add To Cart
Request Quote |
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