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Hex Cap Screws, Plain (ASME B18. 2.1)

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 
ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/4(pt) coarse hex c/s ss316 b18.2.1659
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24 x 1/2(ft) fine hex c/s ss18-8 b18.2.1400
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 1 1/2(pt) fine hex c/s ss18-8 b18.2.150
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24 x 3/4(ft) fine hex c/s ss18-8 b18.2.1550
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ASMCILHex Head Cap ScrewGrade 8Plain3/8-16 x 3/4(ft) coarse gr8 hex c/s -usa b18.2.1193
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ASMCILHex Head Cap ScrewGrade 8Plain3/8-24 x 3/4(ft) fine gr8 hex c/s -usa b18.2.1157
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ASMCILHex Head Cap ScrewGrade 5Plain5/16-24 x 1 3/45/16-24x1 3/4 (pt) fine gr5 hex c/s -usa med carb b18.2.1750
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ASMCILHex Head Cap ScrewGrade 8Plain5/16-24 x 1 1/2(pt) fine gr8 hex c/s -usa b18.2.1175
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 2 3/4(pt) coarse hex c/s ss18-8 b18.2.1503
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-24 x 1(ft) fine hex c/s ss18-8 b18.2.1279
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2 1/4(ft) coarse hex c/s ss18-8 b18.2.1350
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ASMCILHex Head Cap ScrewGrade 5Plain1/4-20 x 41/4-20x4 (pt) coarse gr5 hex c/s -usa med carb b18.2.1275
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ASMCILHex Head Cap ScrewGrade 8Plain5/16-24 x 2(pt) fine gr8 hex c/s -usa b18.2.1225
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ASMCILHex Head Cap ScrewGrade 8Plain5/16-18 x 2 1/4(pt) coarse gr8 hex c/s -usa b18.2.1625
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/2(pt) coarse hex c/s ss18-8 b18.2.1275
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3(pt) coarse hex c/s ss18-8 b18.2.1275
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ASMCILHex Head Cap ScrewGrade 8Plain5/16-18 x 2 3/4(pt) coarse gr8 hex c/s -usa b18.2.1445
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 2(ft) coarse hex c/s ss18-8 b18.2.170
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ASMCILHex Head Cap ScrewGrade 8Plain1/4-28 x 5(pt) fine gr8 hex c/s -usa b18.2.1350
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3(pt) coarse hex c/s ss316 b18.2.175
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Alma BoltMIHex Head Cap ScrewGrade 8Plain9/16-12 x 79/16-12 x 7 grade 8 alloy hex cap screw b18.2.1705
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Alma BoltMIHex Head Cap ScrewGrade 5Plain3/4-10 x 3 3/43/4-10 x 3 3/4 grade 5 hex head cap screw b18.2.1422
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Alma BoltMIHex Head Cap ScrewGrade 5Plain3/4-10 x 83/4-10 x 8 grade 5 hex head cap screw b18.2.1836
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Alma BoltMIHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 47/8-9 X 4 ST ST HCS 18-8 b18.2.1224
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Alma BoltMIHex Head Cap ScrewGrade 8Plain3/4-16 x 3 1/43/4-16 X 3 1/4 GRADE 8 ALLY HCS SAE b18.2.1204
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Alma BoltMIHex Head Cap ScrewGrade 8Plain1-14 x 3 1/21-14 X 3 1/2 GRADE 8 ALLY HCS SAE b18.2.1211
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Alma BoltMIHex Head Cap ScrewGrade 8Plain1-8 x 5 1/21-8 x 5 1/2 grade 8 alloy hex cap screw b18.2.1396
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Alma BoltMIHex Head Cap ScrewGrade 8Plain1/4-20 x 1 1/41/4-20 x 1 1/4 grade 8 alloy hex cap screw b18.2.13607
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Alma BoltMIHex Head Cap ScrewGrade 8Plain1/4-20 x 31/4-20 x 3 grade 8 alloy hex cap screw b18.2.1268
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Alma BoltMIHex Head Cap ScrewGrade 8Plain5/16-24 x 45/16-24 X 4 GRADE 8 ALLY HCS SAE b18.2.1783
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Alma BoltMIHex Head Cap ScrewGrade 8Plain5/16-18 x 2 1/25/16-18 x 2 1/2 grade 8 alloy hex cap screw b18.2.1436
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Alma BoltMIHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 2 1/23/8-16 x 2 1/2 316 st. st. hex cap screw b18.2.1350
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Alma BoltMIHex Head Cap ScrewGrade 8Plain3/8-16 x 2 3/43/8-16 x 2 3/4 grade 8 alloy hex cap screw b18.2.1350
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Alma BoltMIHex Head Cap ScrewGrade 5Plain3/8-16 x 3 1/43/8-16 x 3 1/4 grade 5 hex head cap screw b18.2.1650
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Alma BoltMIHex Head Cap ScrewGrade 8Plain3/8-16 x 7/83/8-16 x 7/8 grade 8 alloy hex cap screw b18.2.1472
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Alma BoltMIHex Head Cap ScrewGrade 5Plain1/2-13 x 51/2-13 x 5 grade 5 hex head cap screw b18.2.13000
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Alma BoltMIHex Head Cap ScrewGrade 8Plain7/8-14 x 4 1/27/8-14 X 4 1/2 GRADE 8 ALLY HCS SAE b18.2.12769
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Alma BoltMIHex Head Cap ScrewGrade 8Plain7/8-9 x 57/8-9 x 5 grade 8 alloy hex cap screw b18.2.1250
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Alma BoltMIHex Head Cap ScrewGrade 5Plain7/8-9 x 4 1/27/8-9 x 4 1/2 grade 5 hex head cap screw b18.2.1334
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Alma BoltMIHex Head Cap ScrewGrade 8Plain3/4-16 x 5 1/23/4-16 X 5 1/2 GRADE 8 ALLY HCS SAE b18.2.1411
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General FMIHex Head Cap ScrewGrade 5Plain3/8-16 x 3 1/203/8-16 x 3.50 hhcs sems con gr 5.1 b18.2.17250
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General FMIHex Head Cap ScrewGrade 8Plain3/4-10 x 8 1/23/4-10 x 8.5 hhcs gr8 alloy b18.2.1510
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General FMIHex Head Cap ScrewGrade 8Plain1-8 x 2 1/41-8 x 2.25 hhcs gr8 alloy b18.2.150
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General FMIHex Head Cap ScrewGrade 8Plain1/4-20 x 21/4-20 x 2 hhcs gr8 zidi bake b18.2.11100
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General FMIHex Head Cap ScrewGrade 8Plain1 1/4-7 x 81-1/4-7 x 8 hhcs gr8 zidi bake b18.2.1150
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General FMIHex Head Cap ScrewGrade 8Plain3/4-10 x 2 1/203/4-10 x 2.50 hhcs gr 8 zidi w/.172 b18.2.190
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General FMIHex Head Cap ScrewGrade 8Plain5/8-11 x 2 3/45/8-11 x 2.75 hhcs gr8 patch driloc b18.2.15144
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General FMIHex Head Cap ScrewGrade 8Plain5/8-18 x 1 1/25/8-18 x 1.5 hhcs gr8 patch q29 b18.2.1800
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General FMIHex Head Cap ScrewGrade 8Plain7/16-14 x 3 3/47/16-14 x 3.75 hhcs gr8 zidi b18.2.125
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General FMIHex Head Cap ScrewGrade 8Plain1/2-13 x 1 3/41/2-13 x 1.75 hhcs gr8 zidi bake b18.2.1180
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General FMIHex Head Cap ScrewGrade 8Plain1/2-13 x 31/2-13 x 3 hhcs gr8 zidi .0002 b18.2.1651
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General FMIHex Head Cap ScrewGrade 8Plain9/16-18 x 1 3/49/16-18 x 1.75 hhcs gr8 alloy b18.2.1750
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General FMIHex Head Cap ScrewGrade 8Plain1/2-13 x 3 3/41/2-13 x 3.75 hhcs gr8 zidi bake b18.2.150
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General FMIHex Head Cap ScrewGrade 8Plain5/16-18 x 5 1/25/16-18 x 5.5 hhcs gr8 zidi bake b18.2.194
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General FMIHex Head Cap ScrewGrade 8Plain5/8-11 x 1 1/25/8-11 x 1.5 hhcs gr8 zidi bake b18.2.11132
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General FMIHex Head Cap ScrewGrade 8Plain1-8 x 51-8 x 5 hhcs gr 8 zidi bake w/3/16 b18.2.171
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General FMIHex Head Cap ScrewGrade 8Plain3/4-10 x 73/4-10 x 7 hhcs gr8 alloy b18.2.1630
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APIIAHex Head Cap ScrewSteelPlain3/4-10 x 7 1/2hhc #5 pl ansi b18.2.120
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APIIAHex Head Cap ScrewGrade 5Plain3/8-16 x 2 5/8hhc gr5 w/patch ansi b18.2.14,507
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MMFMIHex Head Cap ScrewGrade 8Plain5/16-18 x 1 1/45/16-18 x 1-1/4 gr 8 hhcs plain b18.2.1900
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MMFMIHex Head Cap ScrewGrade 8Plain1/4-20 x 1 3/81/4-20 x 1-3/8 hhcs gr 8 plain b18.2.1628
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MMFMIHex Head Cap ScrewGrade 8Plain5/16-24 x 3 1/45/16-24 x 3-1/4 gr 8 hhcs plain b18.2.1250
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MMFMIHex Head Cap ScrewGrade 8Plain5/16-24 x 2 3/45/16-24 x 2-3/4 gr 8 hhcs plain b18.2.1350
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MMFMIHex Head Cap ScrewGrade 8Plain1/4-20 x gr 8 hhcs plain b18.2.12200
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MMFMIHex Head Cap ScrewGrade 8Plain1/4-20 x 1 3/41/4-20 x 1-3/4 gr 8 hhcs plain b18.2.11200
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MMFMIHex Head Cap ScrewGrade 8Plain1-14 x 31-14 x 3 gr 8 hhcs plain b18.2.114
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MMFMIHex Head Cap ScrewGrade 8Plain3/8-16 x 23/8-16 x 2 gr 8 hhcs plain b18.2.1310
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MMFMIHex Head Cap ScrewGrade 8Plain3/8-24 x gr 8 hhcs plain b18.2.1920
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MMFMIHex Head Cap ScrewGrade 8Plain3/8-16 x 1 3/43/8-16 x 1-3/4 gr 8 plain hhcs b18.2.1350
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MMFMIHex Head Cap ScrewGrade 8Plain3/4-10 x 1 1/23/4-10 x 1-1/2 gr 8 hhcs plain b18.2.147
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MMFMIHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 3 1/43/8-16 x 3-1/4 hhcs 316 annealed mil-dtl-1222j ty 1 usa b18.2.1605
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MMFMIHex Head Cap Screw316, 317, A4 StainlessPlain1/2-13 x 11/2-13 x 1 316 s/s hhcs astm f593 3a threads usa b18.2.1810
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MMFMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 25/16-18 x 2 hhcs 316 s/s ff-s-85 ty ii st 10p usa b18.2.1338
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MMFMIHex Head Cap ScrewGrade 8Plain3/8-16 x 1 3/43/8-16 x 1-3/4 gr 8 plain hhcs b18.2.1350
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MMFMIHex Head Cap ScrewGrade 8Plain1/4-20 x gr 8 hhcs plain b18.2.12200
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MMFMIHex Head Cap ScrewGrade 8Plain3/4-10 x 1 1/23/4-10 x 1-1/2 gr 8 hhcs plain b18.2.147
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MMFMIHex Head Cap ScrewGrade 8Plain1-14 x 31-14 x 3 gr 8 hhcs plain b18.2.114
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MMFMIHex Head Cap ScrewGrade 8Plain1/4-20 x 1 3/41/4-20 x 1-3/4 gr 8 hhcs plain b18.2.11200
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MMFMIHex Head Cap ScrewGrade 8Plain5/16-24 x 3 1/45/16-24 x 3-1/4 gr 8 hhcs plain b18.2.1250
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FACCAOntHex Head Cap ScrewGrade 2Plain3/4-16 x 2hex head cap screw sae 3/4-16 unf x 2 gr 2 low carbon steel plain finish ansi b18.2.1-1965 b18.2.11,124
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FACCAOntHex Head Cap ScrewGrade 5Plain1/4-20 x 3/4hex head cap screw 1/4-20 unc x 3/4 long grade 5 steel plain finish b18.2.12,509
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FACCAOntHex Head Cap ScrewGrade 5Plain3/8-24 x 1 1/2hex head cap screw 3/8-24 unf x 1-1/2 lg gr 5 steel plain finish b18.2.1450
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FACCAOntHex Head Cap ScrewGrade 8Plain5/16-18 x 5hex head cap screw 5/16-18 unc x 5 lg gr 8 steel plain finish b18.2.1202
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FACCAOntHex Head Cap ScrewGrade 2Plain5/8-18 x 3 1/2hex head cap screw sae 5/8-18 unf x 3 1/2 gr 2 low carbon steel plain finish ansi b18.2.1-1965 b18.2.1259
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FACCAOntHex Head Cap ScrewGrade 2Plain3/4-10 x 6hex head cap screw sae grade 2 unc 3/4-10 unc x 6 grade 2 low carbon steel plain ansi b18.2.1-1965 b18.2.1960
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FACCAOntHex Head Cap ScrewGrade 8Plain7/8-9 x 1 3/4hex head cap screw 7/8-9 unc x 1 3/4 lg grade 8 steel plain finish b18.2.1408
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FACCAOntHex Head Cap ScrewGrade 8Plain1/2-13 x 3/4hex head cap screw 1/2-13 unc x 3/4 lg gr 8 steel plain finish b18.2.1487
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FACCAOntHex Head Cap ScrewGrade 5Plain7/8-9 x 2hex head cap screw 7/8-9 unc x 2 lg grade 5 steel plain b18.2.119
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FACCAOntHex Head Cap ScrewGrade 5Plain1-8 x 2 1/2hex head cap screw 1-8 unc x 2 1/2 lg grade 5 plain finish b18.2.130
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FACCAOntHex Head Cap ScrewGrade 5Plain5/8-11 x 3 1/4hex head cap screw 5/8-11 unc x 3 1/4 lg grade 5 steel plain finish ansi b18.2.1-1965 b18.2.125
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FACCAOntHex Head Cap ScrewGrade 2Plain1/2-13 x 5 1/2hex head cap screw 1/2-13 unc x 5 1/2 lg grade 2 steel plain finish b18.2.151
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FACCAOntHex Head Cap ScrewGrade 2Plain1/2-13 x 5hex head cap screw 1/2-13 unc x 5 lg grade 2 steel plain finish b18.2.150
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