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3 1/2 inch length Hex Cap Screws

Hex Cap Screws are hex headed fasteners with external machine screw threads and differ from hex machine bolts by having a washer surface on the underside or bearing side of the head and a chamfered thread end. Hex cap screws have tighter dimensional tolerances than bolts. Metric hex cap screws are specified by various DIN, ISO and JIS standards, and US/Imperial hex cap screws are dimensionally specified by the ASME B18.2.1 specification.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
WeaverWAHex Head Cap Screw316, 317, A4 StainlessPlain1/4-20 x 3 1/2 hex c/s 316 ss100
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WeaverWAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3 1/2 hex c/s 316 ss100
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JacksonMSHex Head Cap ScrewGrade 2Galvanized1/4 x 3 1/2nc hex c/s hot dip37
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JacksonMSHex Head Cap ScrewGrade 2Galvanized5/16 x 3 1/2nc hex c/s hot dip600
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JacksonMSHex Head Cap ScrewGrade 2Galvanized1/2 x 3 1/2nc hex c/s hot dip33
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JacksonMSHex Head Cap ScrewGrade 2Galvanized3/4 x 3 1/2nc hex c/s hot dip82
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JacksonMSHex Head Cap ScrewGrade 2Galvanized1 x 3 1/2nc hex c/s hot dip4
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JacksonMSHex Head Cap ScrewGrade 2Zinc/Clear1/4 x 3 1/2nc hex c/s1043
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JacksonMSHex Head Cap ScrewGrade 2Zinc/Clear1/2 x 3 1/2nc hex c/s534
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JacksonMSHex Head Cap ScrewGrade 5Plain1 1/2 x 3 1/2nc hex c/s2
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear1/4 x 3 1/2nc hex c/s2393.8
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear5/16 x 3 1/2nc hex c/s5055.2
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear3/8 x 3 1/2nc hex c/s1307.84
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear7/16 x 3 1/2nc hex c/s816.16
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear1/2 x 3 1/2nc hex c/s1566.8
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear9/16 x 3 1/2nc hex c/s180
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear5/8 x 3 1/2nc hex c/s1360.88
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear3/4 x 3 1/2nc hex c/s964.26
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear7/8 x 3 1/2nc hex c/s389.1
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear1 x 3 1/2nc hex c/s157.95
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear1 1/8 x 3 1/2nc hex c/s99
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JacksonMSHex Head Cap ScrewGrade 5Zinc/Clear1 1/4 x 3 1/2nc hex c/s36
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MAINSOURCNHHex Head Cap ScrewGrade 5Plain3/8-16 x 3 1/23/8-16x3 1/2 hex cap screw grade 5 z/clr125
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MAINSOURCNHHex Head Cap ScrewGrade 2Plain1/2-13 x 3 1/21/2-13x3 1/2 hex cap screw grade 2 z/clr23
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MAINSOURCNHHex Head Cap ScrewGrade 2Plain5/8-11 x 3 1/25/8-11x3 1/2 hex cap screw grade 2 z/clr105
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MAINSOURCNHHex Head Cap ScrewGrade 2Plain3/4-10 x 3 1/23/4-10x3 1/2 hex cap screw grade 2 z/clr45
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MAINSOURCNHHex Head Cap ScrewGrade 5Cadmium/Yellow3/4-10 x 3 1/2ms90725-193 (hex cp 3/4-10 x 3-1/2 gr5 c&y) MS9072519368
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Set ScrewILHex Head Cap ScrewGrade 5Zinc/Clear1/2-13 x 3 1/2hex c/sinquire
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Set ScrewILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/218-8 304 c/sinquire
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Set ScrewILHex Head Cap Screw316, 317, A4 StainlessPlain5/8-11 x 3 1/2c/s 316 stainless usa manufacturedinquire
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Jay-CeeMIHex Head Cap ScrewGrade 5Plain1/2-13 x 3 1/21/2-13x3 1/2 unc thread hex cap screw grade 5 plain finish300
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AmericanNYHex Head Cap ScrewSteelZinc/Yellow7/8 x 3 1/27/8 x 3 1/2 hex cap bolt zinc yellow4
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AmericanNYHex Head Cap ScrewGrade 8Zinc/Yellow5/8-11 x 3 1/2hex cap496
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AmericanNYHex Head Cap ScrewSteelZinc/Clear5/8-11 x 3 1/2hex cap pl10
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AmericanNYHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 3 1/23/4-10x3-1/2 hex cap stainless 18-810
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AmericanNYHex Head Cap ScrewSteelZinc/Clear1/4-20 x 3 1/21/4-20x3 1/2 hex head cap screw zinc pl2457
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RCFastAZHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/23/8-16x3 1/2 hex cap stainless (pt)250
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JacksonMSHex Head Cap ScrewGrade 2Zinc/Clear3/8 x 3 1/2nc hex c/s155
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JacksonMSHex Head Cap ScrewGrade 2Zinc/Clear7/16 x 3 1/2nc hex c/s125
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JacksonMSHex Head Cap ScrewGrade 2Zinc/Clear5/8 x 3 1/2nc hex c/s1690
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WeaverWAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 3 1/2 hex c/s 316 ss50
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AbabaCAHex Head Cap ScrewSteelPlain1/4 x 3 1/21/4 x 3-1/2 sds hvy duty hex screw 3/8 hd b18.2.12
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain1-8 x 3 1/21-8 x 3 1/2 h/c 316 s/s b18.2.110
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1-8 x 3 1/21-8 x 3 1/2 h/c dom gr 8 yel znc b18.2.141
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AbabaCAHex Head Cap ScrewGrade 5Plain1/4-20 x 3 1/21/4-20 x 3 1/2 h/c al-2000 (black) gr 5 b18.2.127
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3 1/21/4-20 x 3 1/2 h/c gr 5 znc b18.2.1300
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3 1/21/4-20 x 3 1/2 h/c dom gr 8 yel znc b18.2.1384
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3 1/21/4-20 x 3 1/2 h/c s/s b18.2.1100
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-28 x 3 1/21/4-28 x 3 1/2 h/c dom gr 8 yel znc b18.2.150
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3 1/25/16-18 x 3 1/2 h/c gr 5 znc b18.2.1380
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3 1/25/16-18 x 3 1/2 h/c dom gr 8 yel znc b18.2.12
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3 1/25/16-18 x 3 1/2 h/c s/s b18.2.1237
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-24 x 3 1/25/16-24 x 3 1/2 h/c dom gr 8 yel znc b18.2.1314
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3 1/23/8-16 x 3 1/2 h/c gr 5 znc b18.2.1300
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 3 1/23/8-16 x 3 1/2 h/c 316 s/s b18.2.131
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 3 1/23/8-16 x 3 1/2 h/c dom gr 8 yel znc b18.2.1156
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/23/8-16 x 3 1/2 h/c s/s b18.2.1225
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-24 x 3 1/23/8-24 x 3 1/2 h/c dom gr 8 yel znc b18.2.194
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear7/16-14 x 3 1/27/16-14 x 3 1/2 h/c gr 5 znc b18.2.1199
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AbabaCAHex Head Cap ScrewSteelPlain1/4 x 3 1/21/4 x 3-1/2 sds hvy duty hex screw 3/8 hd b18.2.12
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AbabaCAHex Head Cap ScrewSteelPlain1/4 x 3 1/21/4 x 3-1/2 sds hvy duty hex screw 3/8 hd 125pcs b18.2.13
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ACCURATEILHex Head Cap ScrewGrade 5Plain3/4-16 x 3 1/23/4-16x3 1/2 fine hex cap scr gr5 plain120
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METRO INDOHHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 3 1/21-8x3 1/2 hex c/s s/s76
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear9/16-12 x 3 1/29/16-12x3-1/2 grd5 hex cap screw/zinc)100
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear3/4-10 x 3 1/23/4-10x3-1/2 grd5 hex cap screw/zinc)112
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear7/8-9 x 3 1/27/8-9x3-1/2 grd5 hex cap screw/zinc)15
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear1-8 x 3 1/21-8x3-1/2 grd5 hex cap screw/zinc)57
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3 1/21/4-20 x 3-1/2 grd8 yellow zinc hex cap screw)475
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3 1/25/16-18 x 3-1/2 grd8 yellow zinc hex cap screw)395
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow7/16-14 x 3 1/27/16 -14 x 3-1/2 grade 8 yellow zinc hex cap screw)190
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow1/2-13 x 3 1/21/2 -13 x 3-1/2 grade 8 yellow zinc hex cap screw)15
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow5/8-11 x 3 1/25/8-11 x 3-1/2 grd8 yellow zinc hex cap screw)9
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3 1/21/4-20x3-1/2 grd5 hex cap screw/zinc)645
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow3/4-10 x 3 1/23/4 -10 x 3-1/2 grade 8 yellow zinc hex cap screw)38
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow7/8-9 x 3 1/27/8 -9 x 3-1/2 yellow zinc finish sae j429 grade 8 hex cap screw)12
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow1-8 x 3 1/21 -8 x 3-1/2 yellow zinc finish sae j429 grade 8 hex cap screw)35
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3 1/25/16-18x3-1/2 grd5 hex cap screw/zinc)258
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3 1/23/8-16x3-1/2 grd5 hex cap screw/zinc)502
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear7/16-14 x 3 1/27/16-14x3-1/2 grd5 hex cap screw/zinc)55
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear1/2-13 x 3 1/21/2-13x3-1/2 grd5 hex cap screw/zinc)125
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow1/2-20 x 3 1/21/2-20 x 3-1/2 grd8 sae yellow zinc hex cap screw usa)94
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow9/16-18 x 3 1/29/16-18 x 3-1/2 grd8 sae yellow zinc hex cap screw usa)50
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SIIINHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/23/8 -16 x 3-1/2 18-8 stainless steel hex cap screw)180
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JHP FastenersTXHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3 1/2screw hex head cap 5/16-18x3.50 grade 8 steel zinc yellow450
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JHP FastenersTXHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3 1/2hex head cap screw 3/8-16x3-1/2 gr5 zinc13
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JHP FastenersTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/2screw hex head cap 1/2-13x3-1/2 s/s195
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JHP FastenersTXHex Head Cap ScrewGrade 5Zinc/Clear5/8-11 x 3 1/25/8-11x3 1/2 hhcs st z1 gr525
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow9/16-12 x 3 1/29/16 -12 x 3-1/2 yellow zinc finish sae j429 grade 8 hex cap screw)15
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Clear3/8-24 x 3 1/23/8-24 x 3 1/2 hex cap screws gr 8 zinc b18.2.110
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B & K FASTPAHex Head Cap ScrewGrade 2Plain7/16-14 x 3 1/27/16-14 x 3 1/2 hex cap screws gr 2 plain b18.2.114
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Yellow7/16-14 x 3 1/27/16-14 x 3 1/2 hex cap screws gr 9 (mc12) z yellow b18.2.18
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B & K FASTPAHex Head Cap ScrewGrade 2Zinc/Clear1/2-13 x 3 1/21/2-13 x 3 1/2 hex cap screws gr 2 zinc b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Clear1/2-13 x 3 1/21/2-13 x 3 1/2 hex cap screws gr 8 zinc b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 2Zinc/Clear1/2-20 x 3 1/21/2-20 x 3 1/2 hex cap screws gr 2 zinc b18.2.15
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1/2-20 x 3 1/21/2-20 x 3 1/2 hex cap screws gr 5 plain b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear1/2-20 x 3 1/21/2-20 x 3 1/2 hex cap screws gr 5 zinc b18.2.1108
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Clear1/2-20 x 3 1/21/2-20 x 3 1/2 hex cap screws gr 9 (mc12) zinc b18.2.131
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Yellow1/2-20 x 3 1/21/2-20 x 3 1/2 hex cap screws gr 9 (mc12) z yellow b18.2.125
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B & K FASTPAHex Head Cap ScrewGrade 5Plain9/16-12 x 3 1/29/16-12 x 3 1/2 hex cap screws gr 5 plain b18.2.1238
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear9/16-12 x 3 1/29/16-12 x 3 1/2 hex cap screws gr 5 zinc b18.2.1355
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Clear9/16-12 x 3 1/29/16-12 x 3 1/2 hex cap screws gr 8 zinc b18.2.13
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B & K FASTPAHex Head Cap ScrewGrade 5Plain9/16-18 x 3 1/29/16-18 x 3 1/2 hex cap screws gr 5 plain b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear9/16-18 x 3 1/29/16-18 x 3 1/2 hex cap screws gr 5 zinc b18.2.1163
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Yellow9/16-18 x 3 1/29/16-18 x 3 1/2 hex cap screws gr 5 z yellow b18.2.118
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B & K FASTPAHex Head Cap ScrewGrade 8Plain9/16-18 x 3 1/29/16-18 x 3 1/2 hex cap screws gr 8 plain b18.2.1253
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Clear9/16-18 x 3 1/29/16-18 x 3 1/2 hex cap screws gr 9 (mc12) zinc b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 9Dip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.)5/8-11 x 3 1/25/8-11 x 3 1/2 hex cap screws gr 9 dacro b18.2.143
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Clear5/8-11 x 3 1/25/8-11 x 3 1/2 hex cap screws gr 9 (mc12) zinc b18.2.13
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TSFTXHex Head Cap ScrewGrade 5Zinc/Clear1/2-13 x 3 1/2hex cap zinc plated 1/2-13 x 3 1/2 gr. 5135
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JacksonMSHex Head Cap ScrewSteelPlain7/8-9 x 3 1/2nc hex c/s30
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JacksonMSHex Head Cap ScrewGrade 5Plain1 1/8 x 3 1/2nc hex c/s8
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CNBILHex Head Cap ScrewGrade 8Phosphate3/4-16 x 3 1/2hex c/s , , type z7873
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CNBILHex Head Cap ScrewGrade 8Zinc/Yellow1 1/8-7 x 3 1/2hex c/s6
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CNBILHex Head Cap ScrewGrade 8Plain3/8-16 x 3 1/2hex c/s300
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CNBILHex Head Cap ScrewSteelPlain3/8-24 x 3 1/2hex c/s , ams 6302 or 6304, wtih special ht per print and marked per print, finish6
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CNBILHex Head Cap ScrewGrade 2Plain3/8-16 x 3 1/2hex c/s299
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CNBILHex Head Cap ScrewGrade 5Zinc/Clear5/8-11 x 3 1/2hex c/s10
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CNBILHex Head Cap ScrewGrade 8Zinc/Clear1 1/4-7 x 3 1/2hex c/s f/t plate10
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CNBILHex Head Cap ScrewGrade 5Zinc/Clear3/4-10 x 3 1/2hex c/s60
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AmericanNYHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/2hex c/s 18-8 30450
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AmericanNYHex Head Cap ScrewSteelZinc/Clear3/4-10 x 3 1/2hex c/s pl60
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