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1/2 Jam Nuts (ASME B18. 2.2)

Hex Jam Nuts have a lower profile than a standard hex nut but have the same dimension across the flats and corners. A hex jam nut can be threaded onto a bolt and run tight against a standard nut which will lock the nut in place and prevent it from backing off. Thus hex jam nuts may sometimes be used as locking nuts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
PerigeeMIHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 x 3/4 x 1/4 hex jam airframe nut b18.2.2633
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PerigeeMIHex Jam NutSteelZinc/Clear1/2-13 x 7/8 x 19/641/2-13 x 7/8 x 19/64 heavy hex jam nut b18.2.21217
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PerigeeMIHex Jam NutGrade AZinc/Clear1/2-13 x 7/8 x 19/641/2-13 x 7/8 x 19/64 heavy hex jam nut b18.2.2291
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PerigeeMIHex Jam NutBrassNickel1/2-13 x 3/4 x 5/161/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2372
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BHAMALHex Jam NutGrade 5Plain1/2-131/2-13 hex fin jam nut gr5 b18.2.236
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BHAMALHex Jam NutGrade 5Zinc/Clear1/2-201/2-20 hex fin jam nut gr.5 zn b18.2.21
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AbabaCAHex Jam NutGrade APlain1/2-201/2-20 fin jam center lk grade a b18.2.21820
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AbabaCAHex Jam NutGrade 5Zinc/Clear1/2-131/2-13 hex jam nut stl znc gr. 5 b18.2.2316
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AbabaCAHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 fin jam h/n 316 s/s b18.2.288
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AbabaCAHex Jam NutBrassPlain1/2-131/2-13 fin jam h/n brass b18.2.2222
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AbabaCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 fin jam h/n s/s b18.2.2150
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AbabaCAHex Jam NutSteelZinc/Clear1/2-131/2-13 fin jam h/n stl znc b18.2.21017
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AbabaCAHex Jam NutGrade 8Zinc/Yellow1/2-201/2-20 fin jam h/n gr 8 yel znc b18.2.220
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AbabaCAHex Jam NutBrassPlain1/2-201/2-20 fin jam h/n brass b18.2.21385
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AbabaCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 fin jam h/n s/s b18.2.23873
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AbabaCAHex Jam NutSteelZinc/Clear1/2-201/2-20 fin jam h/n stl znc b18.2.2589
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AbabaCAHex Jam NutSteelZinc/Clear1/2-201/2-20 l.h. jam nut stl znc b18.2.2271
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AbabaCAHex Jam NutGrade 8Plain1/2-131/2-13 fin jam h/n dom gr 8 pln b18.2.21
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GLFOHHex Jam NutSteelZinc/Clear1/2-131/2-13 top lock fin hex jam nut stl zc b18.2.2 () () ()3000
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GLFOHHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 fin hex jam nut 316 s/s b18.2.2 () () ()420
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GLFOHHex Jam NutSteelZinc/Clear1/2-131/2-13 fin hex jam center lock nut stl zc b18.2.2 () () ()641
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GLFOHHex Jam NutGrade 5Cadmium1/2-201/2-20 lf fin hex jam nut grade 5 stl cad yel w/superseal b18.2.2 () () ()302
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GLFOHHex Jam NutGrade 5Zinc/Yellow1/2-201/2-20 lh fin hex jam nut grade 5 stl zy b18.2.2 () () ()273
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GLFOHHex Jam NutGrade 5Zinc/Yellow1/2-201/2-20 fin hex jam nut grade 5 stl zy b18.2.2 () () ()74
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GLFOHHex Jam NutGrade 8Zinc/Yellow1/2-131/2-13 j995 gr8 hex jam nut zy b18.2.2 () () ()18
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GLFOHHex Jam NutGrade 8Zinc/Yellow1/2-131/2-13 fin hex jam nut gr 8 stl zy b18.2.2 () () ()77
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GLFOHHex Jam NutGrade 8Plain1/2-131/2-13 fin hex jam nut gr 8 stl pln b18.2.2 () () ()81
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GLFOHHex Jam NutSteelCadmium/Yellow1/2-20an315-8r b18.2.2 () () ()138
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GLFOHHex Jam NutSteelPlain1/2-20nut MS35691-39 b18.2.2 () () ()25
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GLFOHHex Jam NutGrade 5Plain1/2-20hex nut MS35691-37 b18.2.2 () () ()35
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GLFOHHex Jam NutSteelZinc/Clear1/2-131/2-13 fin hex jam nut stl zc b18.2.2 () () ()3805
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GLFOHHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 fin hex jam nut 18-8 s/s b18.2.2 () () ()1435
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GLFOHHex Jam NutSteelPlain1/2-131/2-13 fin hex jam nut stl pln b18.2.2 () () ()1267
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GLFOHHex Jam NutBrassPlain1/2-131/2-13 fin hex jam nut brs b18.2.2 () () ()215
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GLFOHHex Jam NutGrade 5Plain1/2-131/2-13 fin hex jam nut grade 5 stl pln b18.2.2 () () ()1296
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GLFOHHex Jam NutGrade 5Zinc/Clear1/2-131/2-13 fin hex jam nut grade 5 stl zc b18.2.2 () () ()1124
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GLFOHHex Jam NutSteelPlain1/2-201/2-20 fin hex jam nut stl pln b18.2.2 () () ()1525
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GLFOHHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 fin hex jam nut 18-8 s/s b18.2.2 () () ()1070
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Irwin IndOntHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 nf hex finished jam nut stainless steel b18.2.2450
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Irwin IndOntHex Jam NutSteelZinc/Clear1/2-131/2-13 unc fin hex jam nuts zinc trivalent clear plated b18.2.2 840
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Irwin IndOntHex Jam NutGrade 5Zinc/Clear1/2-201/2-20 hex jam nut grade 5 steel zinc b18.2.225
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AbabaCAHex Jam NutSteelZinc/Clear1/2-131/2-13 fin jam h/n stl znc b18.2.2200
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AbabaCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 fin jam h/n s/s b18.2.2350
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AbabaCAHex Jam NutSteelZinc/Clear1/2-201/2-20 fin jam h/n stl znc b18.2.250
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JET FITTINGCAHex Jam NutSteelPlain1/2-131/2-13 hex jam nut stl zi cr3 330130 b18.2.25052
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JET FITTINGCAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 fin hex jam nut 18-8 NHJF500CNUT188SS b18.2.2659
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JET FITTINGCAHex Jam NutSteelPlain1/2-201/2-20 fin hex jam nut st zi cr3 330430 b18.2.23066
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StandardMAHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 finish jam nut 316 stainless steel b18.2.26821
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StandardMAHex Jam NutBrassPlain1/2-131/2-13 finish jam nut brass b18.2.22175
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StandardMAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 finish jam nut 18-8 stainless steel b18.2.212415
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StandardMAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 finish jam nut 18-8 stainless steel b18.2.25950
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StandardMAHex Jam NutGrade 5Zinc/Clear1/2-201/2-20 finish jam nut grade 5 zinc b18.2.235
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StandardMAHex Jam NutSilicon BronzePlain1/2-131/2-13 finish jam nut silicon bronze b18.2.2-197
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QFCTXHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 fin hex jam nut 18-8 b18.2.2796
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QFCTXHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 fin hex jam nut 18-8 b18.2.210
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QFCTXHex Jam NutSteelZinc/Clear1/2-131/2-13 fin hex jam nut zinc b18.2.2165
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QFCTXHex Jam NutSteelZinc/Clear1/2-201/2-20 fin hex jam nut zinc b18.2.21100
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B & K FASTPAHex Jam NutSteelGalvanized1/2-131/2-13 galv hex jam nuts b18.2.2456
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B & K FASTPAHex Jam NutSteelZinc/Clear1/2-201/2-20 hex jam nuts zinc b18.2.214041
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B & K FASTPAHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 hex jam nuts 18-8 stainless b18.2.22194
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BHAMGAHex Jam NutBrassPlain1/2 x 4641/2 brass 464 finished hex jam nuts b18.2.255
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Marine FastenersFLHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 hex jam nut ss/chrome b18.2.21514
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QFCTXHex Jam NutGrade 5Zinc/Clear1/2-131/2-13 hex jam nut gr 5 zinc b18.2.29659
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QFCTXHex Jam NutSteelPlain1/2-131/2-13 hex jam nut steel plain b18.2.21500
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Bostwick INHex Jam NutGrade 5Plain1/2-131/2-13 l.h. hex jam nut gr 5 b18.2.2196
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Bostwick INHex Jam NutSteelPlain1/2-201/2-20 l.h. hex jam nut b18.2.276
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Bostwick INHex Jam NutGrade 5Plain1/2-131/2-13 hex fin jam nut gr 5 b18.2.2162
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PerigeeMIHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 x 3/4 x 1/4 hex jam airframe nut b18.2.2633
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PerigeeMIHex Jam NutSteelZinc/Clear1/2-13 x 7/8 x 19/641/2-13 x 7/8 x 19/64 heavy hex jam nut b18.2.21217
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PerigeeMIHex Jam NutGrade AZinc/Clear1/2-13 x 7/8 x 19/641/2-13 x 7/8 x 19/64 heavy hex jam nut b18.2.2291
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PerigeeMIHex Jam NutBrassNickel1/2-13 x 3/4 x 5/161/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2372
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PerigeeMIHex Jam NutSteelZinc/Clear1/2-13 x 3/4 x 5/161/2-13 x 3/4 x 5/16 fin hex jam nut lh thread b18.2.2179
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PerigeeMIHex Jam NutSteelPlain1/2-13 x 3/4 x 7/161/2-13 x 3/4 x 7/16 hex nut b18.2.2115
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PerigeeMIHex Jam NutSteelPlain1/2-20 x 3/4 x 7/161/2-20 x 3/4 x 7/16 fin full hex nut b18.2.21797
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PerigeeMIHex Jam NutGrade 8Cadmium1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2101
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PerigeeMIHex Jam NutSteelPlain1/2-201/2-20 x 3/4 x 5/16 hex jam nut b18.2.222
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PerigeeMIHex Jam NutGrade 5Plain1/2-201/2-20 x 3/4 x 5/16 fin hex jam nut b18.2.2289
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PerigeeMIHex Jam NutGrade 8Cadmium1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2350
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PerigeeMIHex Jam NutGrade 8Cadmium1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2443
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PerigeeMIHex Jam NutSteelPlain1/2-201/2-20 x 3/4 x 5/16 hex jam nut b18.2.2450
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PerigeeMIHex Jam NutSteelPlain1/2-201/2-20 x 3/4 x 5/16 hex jam nut b18.2.21428
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PerigeeMIHex Jam NutGrade 5Phosphate1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2983
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PerigeeMIHex Jam NutGrade 5Phosphate1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2337
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PerigeeMIHex Jam NutGrade 5Phosphate1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.259
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PerigeeMIHex Jam NutGrade BPhosphate1/2-201/2-20 x 3/4 x 5/16 fin hex jam nut b18.2.2285
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PerigeeMIHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide1/2-131/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.2101
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PerigeeMIHex Jam NutGrade CPlain1/2-13 x 3/4 x 5/161/2-13 x 3/4 x 5/16 fin hex jam nut b18.2.23044
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MPT FasteOHHex Jam NutSteelZinc/Yellow1/2-201/2-20 hex jam nut l.h. thread steel zinc and yellow b18.2.24700
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MPT FasteOHHex Jam NutSteelZinc/Yellow1/2-201/2-20 hex jam nut l.h. thread steel zinc and yellow b18.2.24700
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JET FITTINGCAHex Jam NutSteelBlack Oxide1/2-13nut hex 1/213 steel black oxide plated jam b18.2.21300
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JET FITTINGCAHex Jam NutSteelZinc/Clear1/2-13nut hex 1/213 steel zinc plated jam b18.2.2106
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WurthOntHex Jam NutSteelPlain1/2-13nut hx jam sbrz (pl) 1/2-13 b18.2.266
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APIIAHex Jam NutGrade 5Zinc/Clear1/2-13nut hex jam zncl jds14 & asme b18.2.2999
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JET FITTINGCAHex Jam NutBrassPlain1/2-20nut hex 1/220 br jam b18.2.2100
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THRDFASTFLHex Jam NutSteelZinc/Clear1/2-13hex jam nut b18.2.21,473
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THRDFASTFLHex Jam NutSteelPlain1/2-13hex jam nut b18.2.2347
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THRDFASTFLHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-1318-8 ss hex jam nut b18.2.244
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THRDFASTOKHex Jam NutSteelPlain1/2-13hex jam nut b18.2.2663
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THRDFASTMSHex Jam Nut316, 317, A4 StainlessPlain1/2-13t-316 ss hex jam nut b18.2.2218
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KBSTNHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Zinc/Black1/2-131/2-13 hex fin jam nut s/s black zinc b18.2.21,300
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KBSTNHex Jam NutSteelPlain1/2-201/2-20 l.h. hex jam nut b18.2.2150
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THRDFASTFLHex Jam NutSteelPlain1/2nf-20 left hand hex jam nut b18.2.226
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THRDFASTALHex Jam NutSteelPlain1/2-13left hand hex jam nut b18.2.2132
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THRDFASTALHex Jam NutSteelGalvanized1/2-13hex jam nut hdg b18.2.29
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THRDFASTALHex Jam NutSteelZinc/Clear1/2nf-20 hex jam nut b18.2.231
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THRDFASTALHex Jam NutSteelPlain1/2nf-20 left hand hex jam nut b18.2.21009
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MMFMIHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 316 s/s jam nut astm f594 usa b18.2.23136
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MMFMIHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 316 s/s jam nut astm f594 usa b18.2.23136
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MMFMIHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 316 s/s jam nut astm f594 usa b18.2.23136
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MMFMIHex Jam Nut316, 317, A4 StainlessPlain1/2-131/2-13 316 s/s jam nut astm f594 usa b18.2.23136
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All SizeTXHex Jam Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 jam nut s/s b18.2.2452
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