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.

164,217 Hex Head Cap Screw, showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Irwin IndOntHex Head Cap ScrewSteelZinc/Clear5/16-18 x 1 1/45/16-18 x 1 1/4 flat s0c capscrew steel zinc triv clear b18.2.1 ()1000
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black5/16-18 x 1 1/45/16-18 x 1 1/4 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1 ()310
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black5/16-18 x 15/16-18 x 1 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1 ()1438
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Irwin IndOntHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 2 3/45/16-18 x 2-3/4 unc gr.8 hhcs zinc dichromate b18.2.1 ()75
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Irwin IndOntHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 35/16-18 x 3 unc hhcs gr8 steel zinc dichromate b18.2.1 ()50
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Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 15/16-18 x 1 unc hhcs stainless steel b18.2.1 ()2456
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Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/85/16-18 x 5/8 hex capscrew stainless steel b18.2.1 ()842
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Irwin IndOntHex Head Cap ScrewSilicon BronzePlain5/16-18 x 1 1/45/16-18 x 1-1/4 hhcs silicon bronze b18.2.1 ()2000
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Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18 x 3/4 unc hex hd. capscrew 18.8 stainless steel b18.2.1 () ()547
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Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 1/45/16-18 x 1 1/4 unc hhcs stainless steel b18.2.1 ()350
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3 1/25/16-18 x 3-1/2 grade 5 hhcs zinc triv clear b18.2.1 ()150
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 35/16-18 x 3 unc gr5 hhcs zinc dichromate b18.2.1 ()188
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1/25/16-18 x 1/2 unc gr5 hhcs zinc rohs and scotch grip b18.2.1 ()850
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Irwin IndOntHex Head Cap ScrewSteelZinc/Clear5/16-18 x 7/85/16-18 x 7/8 grade hhcs zinc with scotchgrip patch b18.2.1 ()200
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1 3/45/16-18 x 1 3/4 unc gr5 hhcs zinc triv clear b18.2.1 ()574
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/45/16-18 x 3/4 steel gr 5 hhcs znc triv clr w/ 3m scotchgrip b18.2.1 ()250
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BDS FASTEWIHex Head Cap Screw316, 317, A4 StainlessPassivated5/16-18 x 5/85/16-18 x 5/8 hex cap screw 316ss passivate per qqp35c type 696,000
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 7/8scr hhcs grade 5 (zy) 5/16-18x7/8265,665
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Wurth AdaMNHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1scr hhcs (18 8) 5/16-18x198,483
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1scr hhcs grade 5 (zt) 5/16-18x1120
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Wurth AdaMNHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3scr hhcs grade 8 (zy) 5/16-18x327,152
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 9scr hhcs grade 5 (zn) 5/16-18x9550
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Wurth AdaMNHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2scr hhcs (18 8) 5/16-18x214,641
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Wurth AdaMNHex Head Cap ScrewSteelZinc/Clear5/16-18 x 3/4scr t/c/s type-23 hexwhd-(zn) 5/16-18x3/44,977
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Wurth AdaMNHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 1scr hhcs grade 8 (zy) 5/16-18x154,471
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 1 1/4scr hhcs ft grade 5 (zy) 5/16-18x1 1/422,302
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Wurth AdaMNHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3scr hhcs ft (18 8) 5/16-18x36,700
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Wurth AdaMNHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 2 1/4scr hhcs grade 8 (zy) 5/16-18x2 1/422,073
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 4scr hhcs grade 5 (zt) 5/16-18x440,824
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 4scr hhcs grade 5 (zy) 5/16-18x410,126
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Wurth AdaMNHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 2 1/2scr hhcs grade 8 (zy) 5/16-18x2 1/216,988
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Wurth AdaMNHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 1scr hhcs grade 5 (zn) 5/16-18x152,199
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Wurth AdaMNHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1scr hhcs ft (18 8) 5/16-18x120,002
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Yellow5/16-18 x 15/16-18 x 1 unc gr.5 hex caps zinc dichromate b18.2.1800
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 1 3/4gr2 hex c/s b18.2.19,790
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 2 3/4gr2 hex c/s b18.2.19,334
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 2gr2 hex c/s b18.2.13,506
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 3 1/4gr2 hex c/s b18.2.11,555
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 3 1/2gr2 hex c/s b18.2.11,400
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 2 1/4gr2 hex c/s b18.2.11,420
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THRDFASTFLHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 3/8gr2 hex c/s b18.2.11,096
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 1 1/4gr2 hex c/s b18.2.1629
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 4gr2 hex c/s b18.2.1617
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 1 1/2gr2 hex c/s b18.2.11,023
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 3 3/4gr2 hex c/s b18.2.1502
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 5gr2 hex c/s b18.2.1429
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 6gr2 hex c/s b18.2.1425
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THRDFASTFLHex Head Cap ScrewBrassPlain5/16-18 x 2hex c/s b18.2.1372
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THRDFASTFLHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 2 1/4gr2 hex c/s b18.2.1964
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THRDFASTFLHex Head Cap ScrewGrade 2Plain5/16-18 x 5 1/2gr2 hex c/s b18.2.1904
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 2 1/2nc gr5 hex c/s zb imp36
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Valley NuWAHex Head Cap ScrewGrade 5Plain5/16-18 x 7/8nc gr5 hex c/s pl imp393
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 3 1/4nc gr5 hex c/s zb imp39
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 7/8nc gr5 hex c/s zb imp242
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 1 1/2nc gr5 hex c/s zb imp13
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 1 1/4nc gr5 hex c/s zb imp33
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 3nc gr5 hex c/s zb imp4
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Valley NuWAHex Head Cap ScrewGrade 5Plain5/16-18 x 2 1/4nc gr5 hex c/s pl imp476
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 5/8nc gr5 hex c/s zb imp869
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 1/2nc gr5 hex c/s zb imp728
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 5 1/2nc gr5 hex c/s zb imp91
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 4nc gr5 hex c/s zb imp3
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Valley NuWAHex Head Cap ScrewGrade 5Plain5/16-18 x 6nc gr5 hex c/s pl imp49
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Valley NuWAHex Head Cap ScrewGrade 5Plain5/16-18 x 5 1/2nc gr5 hex c/s pl imp16
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Valley NuWAHex Head Cap ScrewGrade 5Plain5/16-18 x 3 1/2nc gr5 hex c/s pl imp35
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Valley NuWAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 6nc gr5 hex c/s zb imp 4
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QFSMIHex Head Cap ScrewBrassPlain5/16-18 x 1/2c/s , USS thread b18.2.1stock
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QFSMIHex Head Cap ScrewBrassPlain5/16-18 x 1 1/2c/s , USS thread b18.2.1stock
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QFSMIHex Head Cap ScrewBrassPlain5/16-18 x 1 3/4c/s , USS thread b18.2.1stock
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QFSMIHex Head Cap ScrewBrassPlain5/16-18 x 2c/s , USS thread b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3/4c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 1/2c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 1c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 5/8c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 1 3/4c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 2c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 2 1/4c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 4c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3 1/2c/s , USS thread (t-316) b18.2.1stock
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QFSMIHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/8c/s , USS thread (18-8) b18.2.1stock
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QFSMIHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/4c/s , USS thread (18-8) b18.2.1300
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QFSMIHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1/2c/s , USS thread (18-8) b18.2.1400
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