3/8 Flange Lock Nuts

Non-Serrated Flange Lock Nuts, or simply Flange Lock Nuts, have a wide flange at one end. The flange distributes the tightening torque over a wider area, but the locking function is provided by some other feature such as top-lock, center-lock, nylon insert.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
CenturyFLLock Nut, Flange, w/o serrationsSteelPlain3/8-24aztech locknut 37frftfz 3/8-24 flanged1700
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MESAFASTCALock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-16grade f flange locknut596.0
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MESAFASTNELock Nut, Flange, w/o serrationsGrade GPhosphate3/8-163/8-16 non serrated flange lock nut grade g black phosphate 2000/ctn2,000
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MESAFASTNELock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8-163/8-16 non serrated flange lock nut grade g zinc 1800/ctn
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Cal FastenrsCALock Nut, Flange, w/o serrationsGrade 8Zinc/Clear3/8-16flange nut gr 8 i toplock feature - grade g aztech pt # 37ccfagz 9/16 hex 3/4 flange 3/8 thick1,000
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B & K FASTPALock Nut, Flange, w/o serrationsGrade GPlain3/8-163/8-16 cone flange locknuts gr g pln6
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B & K FASTPALock Nut, Flange, w/o serrationsGrade FZinc/Yellow3/8-163/8-16 cone flange locknuts gr f zy244
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HayesCALock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24ms21043-6 3/8-24 all metal flange locknut a286 silver pltd40
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HayesCALock Nut, Flange, w/o serrationsSteelPlain3/8-24ms21042l6 3/8-24 all metal flange locknut cad ii dfl302
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NutsBoltsNELock Nut, Flange, w/o serrationsGrade GPhosphate3/8-163/8-16 flange locknut gr g phos & oil712
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NutsBoltsNELock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 large flange center locknut zp26269
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NutsBoltsNELock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-163/8-16 flange oval locknut gr. f zinc & wax24368
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AmericanNYLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-16toplock flange nut pl4500
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AmericanNYLock Nut, Flange, w/o serrationsSteelZinc/Yellow3/8-16toplock flange nut4600
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AmericanNYLock Nut, Flange, w/o serrationsSteelPlain3/8-16top lock flange nut7700
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AmericanNYLock Nut, Flange, w/o serrationsSteelPlain3/8-16side lock flange nut11400
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AmericanNYLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-16side lock flange nut pl43500
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AmericanNYLock Nut, Flange, w/o serrationsSteelZinc/Yellow3/8-16side lock flange nut10000
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AmericanNYLock Nut, Flange, w/o serrationsGrade 8Zinc/Clear3/8-24hex toplock nut pl140000
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AmericanNYLock Nut, Flange, w/o serrationsSteelPlain3/8-16hex top lock weld nut17000
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AmericanNYLock Nut, Flange, w/o serrationsSteelZinc/Yellow3/8-163/8-16 flange top lock nut zinc yellow1200
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ZAL INDUSCALock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 super flange lock nut pltd187
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ACCURATEILLock Nut, Flange, w/o serrationsGrade 8Zinc/Yellow3/8-16flange lock nut zy660
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ASMCILLock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-16coarse grf stover all metal flange locknut med carb zp2,019
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ASMCILLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-24fine grg stover all metal flange locknut med carb34
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ASMCILLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-16coarse grg stover all metal flange locknut med carb phos520
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ASMCILLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-24fine grg stover all metal flange locknut med carb phos2,561
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ASMCILLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-16coarse grg stover all metal flange locknut med carb625
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AbabaCALock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8-163/8-16 flange locknut grade g zinc715
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LippinCALock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 top flange lock nut zinc1000
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AbabaCALock Nut, Flange, w/o serrationsGrade GPlain3/8-163/8-16 conical flg lock nut gr.g hrd stl pln400
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JacksonMSLock Nut, Flange, w/o serrationsGrade GPhosphate3/8nc flange l/n gr g phos & oil2762
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JacksonMSLock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8nc flange lock nut & wax946
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BAYFASTCOFLLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-243/8-24 flange lock nut zinc1000
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BAYFASTCOFLLock Nut, Flange, w/o serrations316, 317, A4 StainlessPlain3/8-163/8-16 flange nut with no serrations 316 ss23900
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FastWareSaskLock Nut, Flange, w/o serrationsGrade FPlain3/8-163/8-16 nc flange toplock nut1,475
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FastWareSaskLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-163/8-16 nc flange toplock nut563
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FastWareSaskLock Nut, Flange, w/o serrationsGrade GCadmium3/8-163/8-16 nc flange toplock nut cad wax37
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Clarcorp WILock Nut, Flange, w/o serrationsGrade CGalvanized3/8-16top lock flange nut acq 3/8-1681509
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NutsBoltsNELock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-163/8-16 flange oval locknut gr. f zinc & wax61600
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APIIALock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-16hex flange lock nut & wax per print wax593
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NAPPCOTXLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-163/8-16 flange lock nut grade g zy2640
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ACFCALock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-163/8-16 grade g prevailing torque flange locknut zinc ii1600
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ASFCORPMILock Nut, Flange, w/o serrationsGrade 8Phosphate3/8-163/8-16 full hgt hex flange top lk nut j995 gr 8 phos+oil pkg1,400
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BAYFASTCOFLLock Nut, Flange, w/o serrations316, 317, A4 StainlessPlain3/8-1612,000
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RAMCOOHLock Nut, Flange, w/o serrationsGrade FCadmium3/8-161fl 3/8-16 f cw37800
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RAMCOOHLock Nut, Flange, w/o serrationsSteelPlain3/8-16fl 3/8-16 shd1136
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GAluminum zinc flake (Dacromet, Magnigard, Doerken)3/8-163/8-16 grade g hex flange locknut geomet 321 plus xl topcoat25200
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-163/8-16 grade g hex flange locknut phos & oil28500
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RAMCOOHLock Nut, Flange, w/o serrationsGrade FPlain3/8-161fl 3/8-16 f pa1542
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GAluminum zinc flake (Dacromet, Magnigard, Doerken)3/8-163/8-16 grade g hex flange locknut geomet 500a42000
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GCadmium3/8-163/8-16 grade g hex flange locknut cad / wax195000
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RAMCOOHLock Nut, Flange, w/o serrationsGrade FZinc/Yellow3/8-161fl 3/8-16 f zy w-packing21600
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GPlain3/8-24fl 3/8-24 g pl lock1500
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RAMCOOHLock Nut, Flange, w/o serrationsGrade FAluminum zinc flake (Dacromet, Magnigard, Doerken)3/8-242fl 3/8-24 f dor1 sort1082
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-24fl 3/8-24 g po7173
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GCadmium3/8-24fl 3/8-24 g cw15000
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8-24fl 3/8-24 g zw-packing1500
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RAMCOOHLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-24fl 3/8-24 g zy w-packing9000
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MidStatesMILock Nut, Flange, w/o serrationsSteelPhosphate3/8-16lge flg blk phos spin l/n 7/8od50
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THRDFASTFLLock Nut, Flange, w/o serrations316, 317, A4 StainlessPlain3/8-16t-316 ss hex flange lock nut329
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THRDFASTFLLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 flanged top lock nut41
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THRDFASTFLLock Nut, Flange, w/o serrations316, 317, A4 StainlessPlain3/8-16t-316 ss hex flange lock nut25
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THRDFASTTNLock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-1618-8 ss hex flange lock nut1,239
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THRDFASTTNLock Nut, Flange, w/o serrations316, 317, A4 StainlessPlain3/8-16t-316 ss hex flange lock nut87
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LibertyILLock Nut, Flange, w/o serrationsGrade FPhosphate3/8-163/8-16 hex flange nut toplock phos & oil950
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ISSCOMOLock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-16hex flange two way locknut grade f zp6500
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ISSCOMOLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-16Spiralock (Emhart) hex spiralock locknut flange z/p 3/8-161750
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NorthernMNLock Nut, Flange, w/o serrationsGrade FZinc/Yellow3/8-16s/o 3/8-16 nc gr.f flange locknut zinc/yellow940
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GUIDONNJLock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8-161,050
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ASMCILLock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-16coarse grf stover all metal flange locknut low carb zp2,644
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ASMCILLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-16coarse grg stover all metal flange locknut med carb phos125
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RevcarVALock Nut, Flange, w/o serrationsGrade 5Zinc/Clear3/8-16flange nylon insert l/n 96 hr salt spray Cr3+ to white rust w/super seal (120 hour salt spray performance until the first appearance of red rust)122,900
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Wurth IndD.F.Lock Nut, Flange, w/o serrationsGrade 5Zinc/Clear3/8-163/8-16 hex flange nut gr 5 zn top lock-
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Wurth IndD.F.Lock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-163/8-16 large flange center locknut grade f zinc plated518
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CONTAERONJLock Nut, Flange, w/o serrationsGrade FZinc/Clear3/8-16flange toplock gr. f125
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CONTAERONJLock Nut, Flange, w/o serrationsGrade FPlain3/8-24super flange toplock gr.f975
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CONTAERONJLock Nut, Flange, w/o serrationsNylonPlain3/8-16flange nut /83,494
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CONTAERONJLock Nut, Flange, w/o serrationsNylonPlain3/8-16flange nut /96,500
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CONTAERONJLock Nut, Flange, w/o serrationsNylonPlain3/8-16flange nut .0003 zn/yw79,113
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CONTAERONJLock Nut, Flange, w/o serrationsNylonPlain3/8-16flange nut .0002 zn/yw24,600
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CONTAERONJLock Nut, Flange, w/o serrationsGrade 8Black Oxide3/8-16nylon flng /245434
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CONTAERONJLock Nut, Flange, w/o serrationsGrade GPlain3/8-16gr.g flange toplock93,400
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CONTAERONJLock Nut, Flange, w/o serrationsNylonPlain3/8-16flng nut .0003 triv 9693,288
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CONTAERONJLock Nut, Flange, w/o serrationsGrade GBlack Oxide3/8-16gr.g flange toplock cad&wax56200
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CONTAERONJLock Nut, Flange, w/o serrationsSteelPlain3/8-16small flange centerlock hex nut8763
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CONTAERONJLock Nut, Flange, w/o serrationsGrade GGalvanized3/8-163/8-16 flange toplock gr. g10152
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GLFOHLock Nut, Flange, w/o serrationsSteelZinc/Yellow3/8-16fin hex ins flg lock nut zy nut50
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Kanebridge ILLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 non-serrated flange hex nuts case hardened hr15n 78/90 zinc and bake25,000
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Kanebridge ILLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-243/8-24 non-serrated flange hex nuts case hardened hr15n 78/90 zinc and bake25,000
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Kanebridge ILLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 nylon insert flange stop hex lock nut zinc25,000
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Kanebridge ILLock Nut, Flange, w/o serrationsGrade 8Zinc/Yellow3/8-16 ce126983/8-16 ce12698 nylon insert flange hex locknut grade 8 zinc yellow15,000
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Kanebridge ILLock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-163/8-16 regular flange top lock hex nut grade g zinc yellow31.250
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Kanebridge ILLock Nut, Flange, w/o serrationsSteelZinc/Clear3/8-163/8-16 non serrated regular flange center locknut grade f zinc37.500
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-24reg flg center lock30,104
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-24reg flg tech lock2,000
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-163/8-16 large flg top lock1,150
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-24reg flg chem lock875
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-16reg flg center lock603
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-16reg flg tech lock290
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-16spl flg center lock190
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-16reg flg tech lock72
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AztechILLock Nut, Flange, w/o serrationsSteelPlain3/8-163/8-16 reg flg top lock25
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Mid-ValleyCALock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24flange nut non-lockinginquire
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Mid-ValleyCALock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24flange nut non-lockinginquire
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WurthINLock Nut, Flange, w/o serrationsSteelZinc/Black3/8-163/8-16 prev torq flange locknut gr-g zb zinc black trivalent td-4398 1500 per 1/4keg pack 500 per poly bag9,000
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TimberlineCOLock Nut, Flange, w/o serrationsGrade 8Phosphate3/8-16gr8 flng nut phos 3/8-168400
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TimberlineCOLock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16hx flng nut 18-8 ss 3/8-161470
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TimberlineCOLock Nut, Flange, w/o serrationsGrade GZinc/Clear3/8-16gr g flng lk nut zn 3/8-162200
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GPlain3/8-16green coated flanged hex nut (no lock)11195
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GPlain3/8-24SAE finish flanged hex nut (no lock)1147
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GPlain3/8-16green coated flanged hex nut (no lock)686
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GPlain3/8-24SAE flanged hex nut (no lock)1320
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GPhosphate3/8-243/8-24 sae (phos & oil) stover flange nut grade g1577
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-243/8-24 sae (yellow zinc) stover flange nut grade g1675
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SBSMALock Nut, Flange, w/o serrations300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16spherical flng nut s/s (set)
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Alma BoltMILock Nut, Flange, w/o serrationsGrade GZinc/Yellow3/8-163/8-16 yellow zinc stover flange nut grade g1400
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AALLNJLock Nut, Flange, w/o serrationsGrade GPhosphate3/8-16regular flange tech lock nut, grade g, & oil607
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