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1/2-20 Serrated Flange Lock Nuts

Serrated Flange Lock Nuts, or Whiz-Lock® nuts, have a wide flange at one end that is serrated on the under side. On tightening, the serrations bite into the mating surface providing the locking feature.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
WeaverWALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 whiz nut zinc725
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ASMCILLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20fine hex flange nut with serration case hardened low carb zp807
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AbabaCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 whiz flangenut hrd stl znc b18.2.2550
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AbabaCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 whiz flangenut hrd stl znc b18.2.2100
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ManscoMILock Nut, Flange, w serr. (Whiz-Lock etc.)Grade FZinc/Clear1/2-20flange nylon insert locknut ne pattern grd f triv znc600
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 18-8 s.s serrated flange nuts a bb 200 fb 1000 qk 5000stock
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 steel zn serreted flange lock nuts a bb 200 fb 1000 qk 50001,600
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LibertyILLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20serrated flang nut stl zinc1,465
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Alma BoltMILock Nut, Flange, w serr. (Whiz-Lock etc.)SteelPlain1/2-20SAE spin lock nut243
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XL ScrewGALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20serrated flange nuts case hard zp800
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NutsBoltsNELock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 whizlock nut zp181
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Cal FastenrsCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 serrated flange nut steel trivalent zinc case hard whiz flange nut300
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 18-8 s.s serrated flange nutstock
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HBBOLTCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20hex serratd flange nut case hrd285
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FTSOHLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20serr flange l/n stl zn1634
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Kanebridge ILLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 serrated flange hex lock nuts case hardened hr15n 78/90 zinc and bake6.250
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OSSCORILock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 serrated flange nut plated b18.2.2378
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Bostwick INLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 whiz flange nut zinc b18.2.277
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FastWareSaskLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-20nf serrated flange nut1,510
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 steel zn serreted flange lock nuts a bb 200 fb 1000 qk 50001,600
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Clear1/2-201/2-20 steel zn serreted flange lock nuts a bb 200 fb 1000 qk 50001,600
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)Grade 2Zinc/Clear1/2-201/2-20 gr.2-serr zn flange nutsstock
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)Grade 2Zinc/Clear1/2-201/2-20 gr.2-serr zn flange nuts a bb 200 fb 1000 qk 5000stock
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MTPCALock Nut, Flange, w serr. (Whiz-Lock etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 18-8 s.s serrated flange nuts a bb 200 fb 1000 qk 5000stock
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BRIGHBESTILLock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Yellow1/2-201/2-20 flange nut, nf hard/serr zy49000
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Valley NuWALock Nut, Flange, w serr. (Whiz-Lock etc.)SteelZinc/Black1/2-20nf serrated flange lock nut zb990
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