5/16-18 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.

175,582 Hex Head Cap Screw, showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Spring BoTXHex Head Cap ScrewSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-18 x 1/25/16(18) x 1/2 hex cap screw A453 grade 660B (A286) b18.2.1 b18.2.1 usainquire
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Spring BoTXHex Head Cap ScrewDuplex Stainless (2205, Ferralium etc.)Plain5/16-18 x 3/45/16(18) x 3/4 hex cap screw d2205 b18.2.1 b18.2.1 usainquire
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Spring BoTXHex Head Cap ScrewDuplex Stainless (2205, Ferralium etc.)Plain5/16-18 x 1 3/45/16(18) x 1-3/4 hex cap screw d2205 b18.2.1 b18.2.1 usainquire
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Spring BoTXHex Head Cap ScrewSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-18 x 15/16(18) x 1 hex cap screw al6xn b18.2.1 b18.2.1 usainquire
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Buy Hex Cap Screws from one of our FCH Network Partners
Zoro Tools Inc.Hex Head Cap ScrewGrade 2Plain5/16-185/16-18 grade 2 hex head cap screw steel pk 100
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Zoro Tools Inc.Hex Head Cap ScrewGrade 2Plain5/16-185/16-18 grade 2 hex head cap screw steel pk 100
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Zoro Tools Inc.Hex Head Cap ScrewGrade 8Plain5/16-185/16-18 grade 8 hex head cap screw steel pk 25
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Zoro Tools Inc.Hex Head Cap ScrewGrade 8Plain5/16-185/16-18 grade 8 hex head cap screw steel pk 50
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Buy Hex Cap Screws from one of our FCH Network Members
VertexDILHex Head Cap ScrewSilicon BronzePlain5/16-18 x 2 1/25/16-18x2-1/2 hex hd c/s 651 sil brnz2938
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VertexDILHex Head Cap ScrewSilicon BronzePlain5/16-18 x 2 1/25/16-18x2-1/2 hex hd c/s 651 sil brnz3,601
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ACFCAHex Head Cap ScrewGrade 5Plain5/16-18 x 3 1/25/16-18x3-1/2 gr5 hex c/s plain250
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/85/16-18x5/8 s/s hex head cap screw973
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 7/85/16-18x7/8 s/s hex head cap screw5600
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18x3/4 s/s hex head cap screw21602
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ACFCAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3/45/16-18x3/4 type-316 s/s hex c/s41
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 1/45/16-18x1-1/4 s/s hex head cap screw175
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 1/85/16-18x1-1/8 s/s hex head cap screw4589
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide5/16-18 x 1 1/45/16-18x1-1/4 s/s hex c/s black oxide600
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 15/16-18x1 s/s hex head cap screw2234
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ACFCAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 15/16-18x1 type-316 s/s hex c/s2045
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ACFCAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 1 1/45/16-18x1-1/4 type-316 s/s hex c/s394
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ACFCAHex Head Cap ScrewSilicon BronzePlain5/16-18 x 1 1/25/16-18x1-1/2 silicon bronze hex head cap screw200
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ACFCAHex Head Cap ScrewBrassPlain5/16-18 x 1 1/25/16-18x1-1/2 brass hex head cap screw110
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 25/16-18x2 s/s hex head cap screw1320
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 3/45/16-18x1-3/4 s/s hex head cap screw1
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2 1/25/16-18x2-1/2 s/s hex head cap screw425
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Cal FastenrsCAHex Head Cap ScrewGrade 8Plain5/16-18 x 1 1/85/16-18 x 1 1/8 grade 8 hex cap screw plain gr.8 hex cap11,400
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MESAFASTCAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 1 3/4hex c/s gr2144.0
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ACFCAHex Head Cap ScrewSilicon BronzePlain5/16-18 x 3/45/16-18x3/4 silicon bronze hex head cap screw4
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ACFCAHex Head Cap ScrewNylonPlain5/16-18 x 15/16-18x1 nylon hex c/s500
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ACFCAHex Head Cap ScrewBrassPlain5/16-18 x 1 1/45/16-18x1 1/4 brass hex c/s31
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 35/16-18x3 s/s hex head cap screw85
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ACFCAHex Head Cap ScrewNylonPlain5/16-18 x 2 1/25/16-18x2-1/2 nylon hex c/s657
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4 1/25/16-18x4-1/2 s/s hex head cap screw6
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ACFCAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 2 1/25/16-18x2-1/2 hex cap screw grade 2 z/p rohs88
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ACFCAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 15/16-18x1 hex head cap screw gr2 z/p rohs30
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ACFCAHex Head Cap ScrewGrade 2Zinc/Yellow5/16-18 x 1 1/25/16-18x1-1/2 gr2 hex c/s zinc ii b-633-85 ty-ii cl-133
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ACFCAHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 1 3/45/16-18x1-3/4 gr5 hex c/s zinc ii4
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ACFCAHex Head Cap ScrewGrade 5Plain5/16-18 x 2 3/45/16-18x2-3/4 gr 5 hex c/s plain patchlok1
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ACFCAHex Head Cap ScrewGrade 8Zinc/Clear5/16-18 x 1 1/25/16-18x1-1/2 hex head cap screw gr8.2 boron z/p rohs152
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ACFCAHex Head Cap ScrewGrade 8Zinc/Clear5/16-18 x 1 3/45/16-18x1-3/4 hex head cap screw gr8.2 boron z/p rohs159
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ACFCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 25/16-18x2 hex head cap screw gr8.2 boron zinc ii74
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ACFCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/45/16-18x3/4 gr8 hex head cap screw zinc ii domestic17
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ACFCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2 1/45/16-18x2-1/4 s/s hex head cap screw1
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 3/4screw hhc p/t gr5 zncl jds19 ansi b18.2.1385
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/4screw hhc f/t gr5 zncl jds19 ansi b19.2.11,560
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 2 1/4screw hhc p/t gr5 zncl jds19 ansi b18.2.11,000
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APIIAHex Head Cap ScrewGrade 8Zinc/Clear5/16-18 x 1screw hhc zncl f/t1,054
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 2 3/4screw hhc p/t gr5 zncl ansi b18.2.11,250
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APIIAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 6.50screw hhc zncl2,358
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 5/8screw hhc f/t gr5 zncl jds19 ansi b18.2.11,307
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 1/2screw hhc p/t zncl gr5 ansi b18.2.164
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APIIAHex Head Cap ScrewGrade 8Zinc/Clear5/16-18 x 7 7/8screw hhc p/t gr8 zncl ansi b18.2.1674
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APIIAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 2 1/2screw hhc 316 ss per print#1045251,300
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APIIAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 1.75bolt hex cap 316 ss1,700
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APIIAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 2 1/2screw hhc p/t gr2 zncl jds19561
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3screw hhc p/t gr5 zncl jds19852
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1hhc gr57,112
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APIIAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 1/4hhc gr57,230
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APIIAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 2 3/4bolt hex cap 316 ss70
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ACFCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 25/16-18x2 gr5 hex head cap screw z/p rohs compliant500
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ACFCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 125/16-18x12 gr8 hex head cap screw zinc ii rohs compliant422
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ACFCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 3/45/16-18x1-3/4 hex head cap screw gr5 z/p rohs225
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OlanderCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3 1/25/16-18 x 3 1/2 hex hd usa made gr 5 zn102
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/8(ft) coarse hex c/s ss31650
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ASMCILHex Head Cap ScrewGrade 9Zinc/Yellow5/16-18 x 1 1/25/16-18x1 1/2 (pt) coarse gr9 hex c/s l9-usa50
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ASMCILHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 2 1/4(pt) coarse gr8 hex c/s -usa300
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5 1/2(pt) coarse hex c/s ss18-8125
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/8(ft) coarse hex c/s ss18-8233
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ASMCILHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1 1/8(ft) coarse gr8 hex c/s -usa975
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 3/4(pt) coarse hex c/s ss316425
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ASMCILHex Head Cap ScrewGrade 8Plain5/16-18 x 3 3/4(pt) coarse gr8 hex c/s -usa350
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 4(pt) coarse hex c/s ss18-8125
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NWFASTTXHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 15/16-18 x 1 hex cap screw 316 stainless steel fully threaded b18.2.113534
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MidStatesMIHex Head Cap ScrewGrade 9Zinc/Yellow5/16-18 x 3 1/25/16-18 x 3 1/2 hex c/s l-9 z/yel60
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MidStatesMIHex Head Cap ScrewTitaniumPlain5/16-18 x 2 1/45/16-18 x 2 1/4 hex c/s titanium25
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MidStatesMIHex Head Cap ScrewTitaniumPlain5/16-18 x 1/25/16-18 x 1/2 hex c/s titanium15
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LibertyILHex Head Cap ScrewGrade 2Zinc/Yellow5/16-18 x 7/8c/s &400
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LibertyILHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 2 1/2c/s grade 2600
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LibertyILHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 2c/s grade 2800
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LibertyILHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3c/s32,845
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LibertyILHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 7/8c/s1,210
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LibertyILHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/4c/s domestic1,400
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LibertyILHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1c/s &2,615
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LibertyILHex Head Cap ScrewSteelPlain5/16-18 x 3/45/16-18x3/4 c/s astm a354-17bd996
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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 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 8Zinc/Yellow5/16-18 x 5/85/16-18 x 5/8 grade 8 hhcs zinc yellow usa domestic b18.2.11800
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1 3/45/16-18 x 1-3/4 grade 8 hhcs zinc yellow usa domestic b18.2.1850
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 35/16-18 x 3 grade 8 hhcs zinc yellow usa domestic b18.2.1500
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 25/16-18 x 2 grade 8 hhcs zinc yellow usa domestic b18.2.1800
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 2 1/25/16-18 x 2-1/2 grade 8 hhcs zinc yellow usa domestic b18.2.1600
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 15/16-18 x 1 grade 8 hhcs zinc yellow usa domestic b18.2.11400
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1 1/45/16-18 x 1-1/4 grade 8 hhcs zinc yellow usa domestic b18.2.11100
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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 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 8Zinc/Yellow5/16-18 x 2 1/25/16-18 x 2-1/2 grade 8 hhcs zinc yellow usa domestic b18.2.1600
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1 1/45/16-18 x 1-1/4 grade 8 hhcs zinc yellow usa domestic b18.2.11100
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MMFMIHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 5/85/16-18 x 5/8 grade 8 hhcs zinc yellow usa domestic b18.2.11800
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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 8Zinc/Yellow5/16-18 x 15/16-18 x 1 grade 8 hhcs zinc yellow usa domestic b18.2.11400
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ASMCILHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 1/8(ft) coarse hex c/s ss18-825
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Big RedOKHex Head Cap ScrewGrade 5Galvanized5/16-18 x 15/16-18 x 1 gr 5 hex cap screws-galvanized43
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All-Tech SpecCTHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 1/2grad 56,500
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IRFNCHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1 1/2hex c/sr elw1122
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UNEEDANJHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 3/4hex c/s
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Alma BoltMIHex Head Cap ScrewBrassPlain5/16-18 x 2f/t hex c/s693
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System 22PAHex Head Cap ScrewBrassPlain5/16-18 x 1hex c/s 464 naval dom.620
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System 22PAHex Head Cap ScrewBrassZinc/Clear5/16-18 x 7/8hex c/s 464 naval dom.200
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System 22PAHex Head Cap ScrewBrassPlain5/16-18 x 1464 naval75
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System 22PAHex Head Cap ScrewBrassPlain5/16-18 x 7/8464 naval143
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Alma BoltMIHex Head Cap ScrewBrassPlain5/16-18 x 1 1/4hex c/s240
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Alma BoltMIHex Head Cap ScrewNylonPlain5/16-18 x 2c/s203
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Alma BoltMIHex Head Cap ScrewGrade 5Plain5/16-18 x 4c/s250
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UNEEDANJHex Head Cap ScrewGrade 2Plain5/16-18 x 1 1/4hex c/s38,500
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