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Nylon insert lock nuts are self-locking nuts, six-sided nuts with nylon-filled collars at their back end. These collars adhere to the thread of the fastener bolt or screw they are being used with. When a bolt or screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the fastener.

Nylon-insert locknuts are excellent for use where a long-term lock is necessary, or to prevent loosening due to vibration.
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Item #

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Diameter

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Material

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1CNNMZ N/A #1-64 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #1 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 QUOTE Add To Cart
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1CNNM3 N/A #1-64 NYLON INSERT MACHINE SCREW LOCKNUT 316 STAINLESS N/A #1 N/A Coarse N/A 316 Stainless N/A Plain N/A 100 QUOTE Add To Cart
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2CNNMZ N/A #2-56 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #2 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $2.75 Add To Cart
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3CNNMZ N/A #3-48 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #3 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $5.25 Add To Cart
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3CNTMZ N/A #3-48 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) ZINC PLATED N/A #3 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $3.18 Add To Cart
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4CNNMZ N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #4 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $1.85 Add To Cart
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4CNTMZ N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) ZINC PLATED N/A #4 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $2.05 Add To Cart
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4FNTMZ N/A #4-48 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) ZINC PLATED N/A #4 N/A Fine N/A Carbon Steel N/A Zinc Plated N/A 100 $1.75 Add To Cart
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4CNNMS N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT 18-8 STAINLESS N/A #4 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $3.63 Add To Cart
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4FNNMS N/A #4-48 NYLON INSERT MACHINE SCREW LOCKNUT 18-8 STAINLESS N/A #4 N/A Fine N/A 18-8 Stainless N/A Plain N/A 100 $4.25 Add To Cart
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4CNTMS N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 18-8 STAINLESS N/A #4 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $6.95 Add To Cart
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4FNTMS N/A #4-48 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 18-8 STAINLESS N/A #4 N/A Fine N/A 18-8 Stainless N/A Plain N/A 100 $7.25 Add To Cart
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4CNNM3 N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT 316 STAINLESS N/A #4 N/A Coarse N/A 316 Stainless N/A Plain N/A 100 $5.53 Add To Cart
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4FNNM3 N/A #4-48 NYLON INSERT MACHINE SCREW LOCKNUT 316 STAINLESS N/A #4 N/A Fine N/A 316 Stainless N/A Plain N/A 100 $6.70 Add To Cart
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4CNTM3 N/A #4-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 316 STAINLESS N/A #4 N/A Coarse N/A 316 Stainless N/A Plain N/A 100 $7.88 Add To Cart
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4FNTM3 N/A #4-48 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 316 STAINLESS N/A #4 N/A Fine N/A 316 Stainless N/A Plain N/A 100 $8.75 Add To Cart
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5CNNMZ N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #5 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $1.60 Add To Cart
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5CNTMZ N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) ZINC PLATED N/A #5 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $2.73 Add To Cart
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5CNNMS N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT 18-8 STAINLESS N/A #5 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $4.05 Add To Cart
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5CNTMS N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 18-8 STAINLESS N/A #5 N/A Coarse N/A 18-8 Stainless N/A Plain N/A 100 $7.35 Add To Cart
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5FNTMS N/A #5-44 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 18-8 STAINLESS N/A #5 N/A Fine N/A 18-8 Stainless N/A Plain N/A 100 $7.65 Add To Cart
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5CNNM3 N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT 316 STAINLESS N/A #5 N/A Coarse N/A 316 Stainless N/A Plain N/A 100 $6.13 Add To Cart
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5CNTM3 N/A #5-40 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 316 STAINLESS N/A #5 N/A Coarse N/A 316 Stainless N/A Plain N/A 100 $8.75 Add To Cart
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5FNTM3 N/A #5-44 NYLON INSERT MACHINE SCREW LOCKNUT (THIN) 316 STAINLESS N/A #5 N/A Fine N/A 316 Stainless N/A Plain N/A 100 $9.73 Add To Cart
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6CNNMZ N/A #6-32 NYLON INSERT MACHINE SCREW LOCKNUT ZINC PLATED N/A #6 N/A Coarse N/A Carbon Steel N/A Zinc Plated N/A 100 $1.65 Add To Cart
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