FCH News

Square Nuts

Square Nuts are just four-sided nuts, but compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening. Square nuts are typically mated with square-headed bolts.

1,919 Square Nut, showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
JacksonMSSquare NutSteelGalvanized3/4nc square nut hdg141
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JacksonMSSquare NutSteelPlain7/16nc square nut28
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JacksonMSSquare NutSteelPlain7/8nc square nut116
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JacksonMSSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#6-3218-8 304 square nut square nut 18-8 304100
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JacksonMSSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-3218-8 304 square nut square nut 18-8 30492
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JacksonMSSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-3218-8 304 square nut square nut 18-8 30475
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JacksonMSSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13nc 18-8 304 square nut22
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JacksonMSSquare NutSteelZinc/Clear#10-24nc square nut7056
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JacksonMSSquare NutSteelZinc/Clear#10-32nf square nut193
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JacksonMSSquare NutSteelZinc/Clear1/4nc square nut7941
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JacksonMSSquare NutSteelZinc/Clear5/16nc square nut6639
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JacksonMSSquare NutSteelZinc/Clear3/8nc square nut1947
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JacksonMSSquare NutSteelZinc/Clear1/2nc square nut906
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JacksonMSSquare NutSteelPlain3/4nc heavy square nut9
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MAINSOURCNHSquare NutSteelPlain1/4-201/4-20 square nut stl1780
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MAINSOURCNHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 square nut 18-8 ss218
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MAINSOURCNHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut 18-8 ss10
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WeaverWASquare NutSteelPlain5-.85-.8 square nut plain175
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WeaverWASquare NutSteelPlain#10-2410-24 square nut plain364
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-3210-32 square nut 18-8 ss107
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WeaverWASquare NutSteelZinc/Clear#10-3210-32 square nut zinc45
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WeaverWASquare NutSteelPlain1/4-201/4-20 square nut plain2600
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 square nut 18-8 ss416
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WeaverWASquare NutSteelZinc/Clear1/4-201/4-20 square nut zinc2200
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WeaverWASquare NutSteelPlain5/16-185/16-18 square nut plain200
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 square nut 18-8 ss33
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WeaverWASquare NutSteelZinc/Clear5/16-185/16-18 square nut zinc11800
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WeaverWASquare NutSteelPlain3/8-163/8-16 square nut plain226
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WeaverWASquare NutSteelZinc/Clear3/8-163/8-16 square nut zinc4350
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WeaverWASquare NutSteelPlain7/16-147/16-14 square nut plain211
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut 18-8 ss106
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WeaverWASquare NutSteelZinc/Clear1/2-131/2-13 square nut zinc1140
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-115/8-11 square nut 18-8 ss19
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WeaverWASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-103/4-10 square nut 18-8 ss22
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WeaverWASquare NutSteelZinc/Clear3/4-103/4-10 square nut zinc2805
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WeaverWASquare NutSteelPlain7/8-97/8-9 square nut plain58
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WeaverWASquare NutSteelPlain1 1/8-71 1/8-7 square nut plain82
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YANKEENHSquare NutSteelZinc/Clear#10-2410-24 square nut zinc pltd1164
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YANKEENHSquare NutBrassPlain#10-3210-32 square nut brass60
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YANKEENHSquare NutSteelZinc/Clear1/4-201/4-20 square nut (7/16 acrflts) steel zinc plated312
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YANKEENHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 square nut (7/16 wide) 18-8 stainless steel66
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YANKEENHSquare NutSteelPlain5/16-185/16-18 square nut (9/16 wide) plain steel99
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YANKEENHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-163/8-16 square nut (5/8 wide) 18-8 stainless steel104
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YANKEENHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut (13/16 wd x 7/16 ht) 18-8 stainless steel24
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YANKEENHSquare NutSteelZinc/Clear3/4-103/4-10 square nut zinc pltd114
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YANKEENHSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-328-32 square nut stain steel100
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YANKEENHSquare NutSteelZinc/ClearM2-0.40m2(.4) square nut zinc pltd191
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YANKEENHSquare NutSteelZinc/ClearM8-1.25m8(1.25) square nut zinc pltd268
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Jay-CeeMISquare NutSteelPhosphate5/16-185/16-18 square machine screw nut black phos34590
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AbabaCASquare NutSteelZinc/ClearM4-0.70m4-.7 square nut steel znc pltd (din 562)2750
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AbabaCASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM6-1.00m6-1.0 square nut (din 557) stainless steel1800
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AbabaCASquare NutSteelGalvanized1-81-8 sq nut stl hdg b18.2.2198
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AbabaCASquare NutSteelZinc/Clear1-81-8 sq nut stl znc b18.2.210
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AbabaCASquare NutSteelZinc/Clear#10-2410-24 sq nut stl znc b18.2.23500
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AbabaCASquare NutSteelZinc/Clear#10-2410-24 sq nut stl znc b18.2.2100
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AbabaCASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-3210-32 sq nut s/s b18.2.2692
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AbabaCASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-3210-32 sq nut s/s b18.2.2100
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AbabaCASquare NutSteelZinc/Clear#10-3210-32 sq nut stl znc b18.2.21205
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AbabaCASquare NutSteelZinc/Clear#10-3210-32 sq nut stl znc b18.2.2600
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AbabaCASquare NutSteelPlain1 1/8-71 1/8-7 sq nut stl pln b18.2.25
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AbabaCASquare NutSteelPlain1 1/4-71 1/4-7 sq nut stl pln b18.2.21
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AbabaCASquare NutSteelPlain1 3/8-61 3/8-6 sq nut stl pln b18.2.227
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AbabaCASquare NutSteelPlain1 1/2-61 1/2-6 sq nut stl pln b18.2.24
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AbabaCASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 sq nut s/s b18.2.213500
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AbabaCASquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 sq nut s/s b18.2.2300
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AbabaCASquare NutSteelGalvanized1/4-201/4-20 sq nut stl hdg b18.2.274
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AbabaCASquare NutSteelPlain1/4-201/4-20 sq nut stl pln b18.2.2575
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AbabaCASquare NutSteelBlack Oxide1/4-201/4-20 sq nut stl blk ox wax b18.2.2978
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AbabaCASquare NutSteelZinc/Clear1/4-201/4-20 sq nut stl znc b18.2.22888
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Set ScrewILSquare NutSteelZinc/Yellow3/8-16(1 x3 x1/4) flat rectangular nut & plateinquire
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ACCURATEILSquare NutSteelPlain1 1/2-61 1/2-6 square nut regular plain33
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ACCURATEILSquare NutSteelPhosphate3/8c12009-014-4 .375 rectangular black phos (tinnerman type nut old# c13727-014-4)184
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ACCURATEILSquare NutSteelPlain5/16-18square nut regular1200
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AmericanNYSquare NutSteelPlain1/2-13square nut10
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AmericanNYSquare NutSteelZinc/Clear1/2-13square nut zp650
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AmericanNYSquare NutSteelZinc/Clear1/4-201/4-20 square nut zp4000
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AmericanNYSquare NutSteelZinc/Clear#8-32square nut zp100
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AmericanNYSquare NutSteelPlain#12-24square nut9900
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AmericanNYSquare NutSteelZinc/Clear#12-24square nut pl35500
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AmericanNYSquare NutSteelZinc/Yellow#3-56square nut28000
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AmericanNYSquare NutBrassPlain#3-56square nut pl10000
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AmericanNYSquare NutSteelZinc/Clear#5-40square nut zp68500
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AmericanNYSquare NutSteelPlain#6-32square nut25700
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AmericanNYSquare NutSteelPlain#6-40square nut1500
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AmericanNYSquare NutSteelZinc/Clear#6-40square nut pl117000
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AmericanNYSquare NutSteelPlain#8-32square nut57000
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AmericanNYSquare NutSteelZinc/Yellow#8-32square nut60000
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AmericanNYSquare NutSteelPlain#8-32square nut black3000
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AmericanNYSquare NutSteelZinc/Clear#8-36square nut zp80000
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AmericanNYSquare NutSteelZinc/Clear#10-24square nut pl1000
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AmericanNYSquare NutSteelPlain#10-24square nut26000
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AmericanNYSquare NutSteelZinc/Clear#4-40square nut pl4100
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AmericanNYSquare NutSteelZinc/Clear#10-32square nut pl29590
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ExpressCASquare NutSteelZinc/Clear1/2-131/2-13 square nuts zinc250
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ExpressCASquare NutSteelZinc/Clear3/8-163/8-16 square nut zinc1490
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SIIINSquare NutSteelPlain1-81-8 plain square nut b18.2.2125
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SIIINSquare NutGrade 2Plain3/4-103/4-10 square nuts grade 2 plain b18.2.2100
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SIIINSquare NutGrade APlain5/8-115/8-11 grade a plain finish steel regular square nut b18.2.246
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RePneu ToMISquare NutGrade 2Zinc/Clear1/4-201/4-20 square nuts grade 2 zinc5000
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QFCTXSquare NutSteelPlain3/4 x 6 1/23/4x6 1/2 t-o sb w/fin & sq nt b18.2.21164
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QFCTXSquare NutSteelPlain1/4-201/4-20 square nut a563 a plain finish b18.2.254
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QFCTXSquare NutSteelPlain5/165/16nc plain square nut 321032 b18.2.2152
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2900
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2186
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QFCTXSquare NutSteelPlain3/8-163/8-16 square nut plain b18.2.2704
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut plain b18.2.240
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QFCTXSquare NutSteelPlain1/2-131/2-13 square nut plain b18.2.23000
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QFCTXSquare NutGrade 5Plain1/2-131/2-13 hvy square nut grade 5 plain b18.2.236
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QFCTXSquare NutSteelPlain1/2-131/2-13 sq nut overtapped .021 plain b18.2.2490
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.2203
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.2601
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QFCTXSquare NutSteelPlain3/4-103/4-10 square nut plain tap oversized b18.2.21410
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QFCTXSquare NutSteelPlain1-81-8 square nut plain b18.2.225
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QFCTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-2410-24 square nut 304 18-8 304 steel b18.2.2216
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QFCTXSquare NutSteelZinc/Clear5/16-185/16-18 square nut zinc b18.2.25430
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QFCTXSquare NutSteelGalvanized1/2-131/2-13 square nut galvanized b18.2.2746
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QFCTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut 18-8 s/s b18.2.25935
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QFCTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut 18-8 s/s b18.2.2386
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QFCTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 square nut 18-8 s/s domestic b18.2.2230
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TSFTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 13/16 x 7/16square nut ss 1/2-13x13/16x7/1675
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TSFTXSquare Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 13/16 x 7/16square nut ss 1/2-13x13/16x7/1675
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B & K FASTPASquare NutAluminumPlain1/4-201/4-20 aluminum square nuts b18.2.2500
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B & K FASTPASquare NutSteelGalvanized1/4-201/4-20 galv square nuts b18.2.229075
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B & K FASTPASquare NutSteelPlain1/2-131/2-13 heavy square nuts plain b18.2.2131
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B & K FASTPASquare NutGrade 8Zinc/Yellow3/4-103/4-10 heavy square nut gr 8 zy b18.2.226
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B & K FASTPASquare NutSteelPlain1-81-8 heavy square nuts plain b18.2.23
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B & K FASTPASquare NutSteelPlain1 1/8-71 1/8-7 heavy square nuts plain b18.2.21
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B & K FASTPASquare NutSteelPlain1 1/41 1/4 heavy square nuts plain b18.2.254
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B & K FASTPASquare NutSteelPlain2-4 1/22-4 1/2 heavy square nuts plain b18.2.29
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B & K FASTPASquare NutSteelPlain3/4-103/4-10 l.h. square nuts plain b18.2.2298
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B & K FASTPASquare NutSteelPlain#5-405/40 square nuts plain b18.2.23800
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B & K FASTPASquare NutSteelZinc/Clear#6-326/32 square nuts zinc b18.2.27177
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B & K FASTPASquare NutSteelZinc/Clear#8-328/32 square nuts zinc b18.2.215200
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B & K FASTPASquare NutSteelZinc/Clear#10-2410/24 square nuts zinc b18.2.219800
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B & K FASTPASquare NutSteelZinc/Clear#12-2412/24 square nuts zinc b18.2.25914
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B & K FASTPASquare NutSteelPlain1/4-201/4-20 square nuts plain b18.2.21200
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B & K FASTPASquare NutSteelPlain5/16-185/16-18 square nuts plain b18.2.246832
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B & K FASTPASquare NutSteelZinc/Clear5/16-185/16-18 square nuts zinc b18.2.26105
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B & K FASTPASquare NutSteelPlain3/8-163/8-16 square nuts plain b18.2.2304
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B & K FASTPASquare NutSteelPlain7/16-147/16-14 square nuts plain b18.2.226296
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B & K FASTPASquare NutSteelPlain1/2-131/2-13 square nuts plain b18.2.21583
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Lubker DiPASquare NutSteelPlain2 1/2-42 1/2-4 hvy square nut pln5
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TSFTXSquare NutSteelPlain1-8square nut carbon steel plain 1-811
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TSFTXSquare NutGrade APlain5/16-18square heavy nut low carbon steel gr a plain 5/16-18600
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JET FITTINGCASquare NutSteelPlain3/816nut square 3/816 steel plain b18.2.2900
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JET FITTINGCASquare NutGrade 2Zinc/Clear1/2-13nut square 1/2-13 grade 2 steel zinc plated b18.2.2200
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CNBILSquare NutGrade 5Plain1-8heavy square nut, ,18
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CNBILSquare NutSteelZinc/Clear1/4-281/4-28 square nut 12l14 per drawing # 8140537 rev c plate per spec #2030 spap approved5
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