#4-48 Nylon Insert Lock Nuts

Nylon-Insert Lock Nuts, Nyloc Nuts or Elastic Stop Nuts, are locknuts with a nylon or fiber internal collar that increases friction on the screw thread. The screw thread does not cut into the nylon insert, however, the insert deforms elastically over the threads. Since the locking feature can be affected by heat, they are more correctly referred to as “Stop” nuts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
YANKEENHLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-484-48 nylon insert lock nut-stainless steel-us made54
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RCFastAZLock Nut, Nylon InsertSteelZinc/Clear#4-48nylon insert locknut stl cr+3inquire
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RCFastAZLock Nut, Nylon InsertSteelZinc/Clear#4-48nylon insert locknut stl cr+3 (thin pattern)inquire
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RCFastAZLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-48nylon insert locknut 18-8 304inquire
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RCFastAZLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-48nylon insert locknut 18-8 304 (thin pattern)inquire
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RCFastAZLock Nut, Nylon Insert316, 317, A4 StainlessPlain#4-48nylon insert locknut stainless 316inquire
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RCFastAZLock Nut, Nylon Insert316, 317, A4 StainlessPlain#4-48nylon insert locknut stainless 316 (thin pattern)inquire
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LibertyILLock Nut, Nylon InsertBrassCadmium/Yellow#4-48nylon insert locknut cad cad3,000
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ASMCILLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-48fine nyloc nut nm (standard) ss316 b18.2.250
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