Locking Thread Nuts
About Locking Thread Nuts
Locking thread nuts, a type of fastener, feature a design that prevents unintentional loosening due to vibration or torque. Typically equipped with a prevailing torque mechanism, these nuts exhibit resistance to rotation after initial installation, maintaining a secure connection. Common variants include nylon insert lock nuts, which incorporate a nylon ring that creates friction to resist loosening. Additionally, prevailing torque lock nuts may utilize deformed threads or a distorted top section to achieve the same purpose. These nuts find application in various industries, such as automotive, aerospace, and machinery, where maintaining tight connections is critical for safety and performance.
Compare part numbers, manufacturers and available catalog specifications. Open a product for complete details, pricing and availability.
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- RoHS Compliant
- Yes
LK-032-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-032-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-256-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-256-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-440-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 4-40
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-440-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 4-40
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-632-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 6-32
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-832-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 8-32
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-832-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 8-32
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M2.5-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M2.5 x 0.45
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M3-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M3-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M4-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M4-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M5-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LK-M5-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Phosphate
LKA-032-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-032-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-256-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-256-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-440-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 4-40
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-440-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 4-40
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-632-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 6-32
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-632-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 6-32
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-832-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 8-32
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
-
- RoHS Compliant
- Yes
LKA-M2.5-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M2.5 x 0.45
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M2.5-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M2.5 x 0.45
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M3-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M3-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M4-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M4-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M5-1
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKA-M5-2
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- Aluminum Alloy
- RoHS Compliant
- Yes
LKS-032-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-032-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 10-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-256-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-256-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 2-56
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-440-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 4-40
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
-
- RoHS Compliant
- Yes
LKS-632-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 6-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-632-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 6-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-832-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 8-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-832-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Unified
View product details- Thread Size
- 8-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
-
- RoHS Compliant
- Yes
LKS-M3-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
-
- RoHS Compliant
- Yes
LKS-M4-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
LKS-M5-1MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- 300 Series Stainless Steel
LKS-M5-2MD
Penn EngineeringPEMFLEX® Self-locking, Self-clinching Fasteners - Types LK, LKA, LKS - Metric
View product details- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
PLC-032
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Unified
View product details- Thread Size
- 10-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
PLC-440
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Unified
View product details- Thread Size
- 4-40
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
PLC-632
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Unified
View product details- Thread Size
- 6-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
PLC-832
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Unified
View product details- Thread Size
- 8-32
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
PLC-M3
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
PLC-M4
Penn EngineeringNylon Insert Self-Locking Fasteners - Types PL and PLC - Metric
View product details- Thread Size
- M4 x 0.7
- Material
- 300 Series Stainless Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Passivated
-
- RoHS Compliant
- Yes
-
- Thread Size
- 5/16-18
- Material
- Heat-Treated Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Plated1
-
- Thread Size
- 5/16-18
- Material
- Heat-Treated Carbon Steel
- RoHS Compliant
- Yes
- Finish/Coating
- Zinc Plated1
-
- RoHS Compliant
- Yes
CFN-M3-1ZI
Penn EngineeringNylon Insert Self-Locking Fasteners - Types CFN - Metric
View product details- Thread Size
- M3 x 0.5
- Material
- Carbon Steel
- Finish/Coating
- Zinc Plated
