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4 1/2 inch length Hex Cap Screws (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.
Hex Head Cap Screw (b18.2.1), showing 200, (click on any line for more information)
| Buy Hex Cap Screws from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1-8 x 4 1/2 | 1-8 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 15 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 4 1/2 | 1-8 x 4 1/2 h/c s/s b18.2.1 | 13 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Plain | 1 1/4-7 x 4 1/2 | 1 1/4-7 x 4 1/2 h/c dom gr 8 pln b18.2.1 | 2 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 h/c gr 5 znc b18.2.1 | 481 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 233 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 4 1/2 | 1/4-20 x 4 1/2 h/c s/s b18.2.1 | 74 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 h/c gr 5 znc b18.2.1 | 256 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 36 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 5/16-18 x 4 1/2 h/c s/s b18.2.1 | 114 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-24 x 4 1/2 | 5/16-24 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 165 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 3/8-16 x 4 1/2 | 3/8-16 x 4 1/2 h/c gr 5 znc b18.2.1 | 156 |
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| Ababa | CA | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4 1/2 h/c 316 s/s b18.2.1 | 30 |
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| Ababa | CA | Hex Head Cap Screw | Grade 9 | Zinc/Yellow | 3/8-16 x 4 1/2 | 3/8-16 x 4 1/2 h/c gr.9 yellow zinc b18.2.1 | 1 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4 1/2 h/c s/s b18.2.1 | 25 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 3/8-24 x 4 1/2 | 3/8-24 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 100 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 7/16-14 x 4 1/2 | 7/16-14 x 4 1/2 h/c gr 5 znc b18.2.1 | 145 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 7/16-14 x 4 1/2 | 7/16-14 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 144 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 7/16-14 x 4 1/2 | 7/16-14 x 4 1/2 h/c s/s b18.2.1 | 10 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 7/16-20 x 4 1/2 | 7/16-20 x 4 1/2 h/c gr 5 znc b18.2.1 | 140 |
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| Ababa | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 7/16-20 x 4 1/2 | 7/16-20 x 4 1/2 h/c dom gr 8 yel znc b18.2.1 | 16 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/2-13 x 4 1/2 | 1/2-13 x 4-1/2 grd8 yellow zinc hex cap screw b18.2.1 | 45 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 7/16-14 x 4 1/2 | 7/16-14x4-1/2 yellow zinc finish sae j429 grade 8 hex cap screw) b18.2.1 | 170 |
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| SII | IN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 3/8-16 x 4 1/2 | 3/8-16x4-1/2 grd5 hex cap screw/zinc) b18.2.1 | 118 |
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| SII | IN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/2-13 x 4 1/2 | 1/2-13x4-1/2 grd5 hex cap screw/zinc) b18.2.1 | 80 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/2-13 x 4 1/2 | 1/2-13 x 4-1/2 grd8 yz hex cap screw) b18.2.1 | 125 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/8-11 x 4 1/2 | 5/8-11 x 4-1/2 grd8 yz hex cap screw) b18.2.1 | 20 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-28 x 4 1/2 | 1/4-28 x 4-1/2 grd8 yellow zinc hex cap screw) b18.2.1 | 5 |
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| SII | IN | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 1-8 x 4 1/2 | 1-8x4 1/2 (pt) unc hex cap screws coarse stain 316 b18.2.1 | 18 |
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| SII | IN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1-8 x 4 1/2 | 1-8x4-1/2 hex cap screw 18-8 stainless b18.2.1 | 5 |
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| SII | IN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 (pt) hex cap screws grade 8 fine zinc-yellow bake b18.2.1 | 5 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 4 1/2 | 5/16-18x4 1/2 hex c/s gr5 plain b18.2.1 | 200 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Plain | 5/8-11 x 4 1/2 | 5/8-11x4 1/2 hex c/s gr5 plain b18.2.1 | 3920 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Dip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.) | 5/8-11 x 4 1/2 | 5/8-11x4-1/2 hex cap grade 5 magni 565 1.5 thread b18.2.1 | 3315 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Plain | 3/4-10 x 4 1/2 | 3/4-10x4 1/2 hex c/s gr5 plain b18.2.1 | 70 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Plain | 7/8-9 x 4 1/2 | 7/8-9x4 1/2 hex c/s gr5 plain b18.2.1 | 10 |
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| QFC | TX | Hex Head Cap Screw | Grade 8 | Plain | 1 1/4 x 4 1/2 | 1 1/4x4 1/2nf gr8 hex c/s pln b18.2.1 | 5 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Plain | 1/2-13 x 4 1/2 | 1/2-13x4 1/2 hex cap screw grade 5 b18.2.1 | 870 |
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| QFC | TX | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/8-11 x 4 1/2 | 5/8-11x4-1/2 hex cap screw grade 8 yellow zinc b18.2.1 | 50 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1-8 x 4 1/2 | 1-8x4-1/2 hex cap screw sae grade 5 steel hot dipped galvanized b18.2.1 | 78 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1-8 x 4 1/2 | 1-8x4-1/2 hex cap screw sae grade 5 steel hot dipped galvanized domestic b18.2.1 | 375 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 3/8-16 x 4 1/2 | 3/8-16x4 1/2 hex c/s gr5 hdg domestic b18.2.1 | 156 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 3/8-16 x 4 1/2 | 3/8-16x4 1/2 hex c/s gr5 hdg domestic b18.2.1 | 1785 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1/2-13 x 4 1/2 | 1/2-13x4 hex c/s gr5 2 1/2 thd hdg domestic b18.2.1 | 42 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1/2-13 x 4 1/2 | 1/2-13x4-1/2 hex cap screw grade 5 hdg domestic b18.2.1 | 91 |
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| QFC | TX | Hex Head Cap Screw | Steel | Galvanized | 3/4-10 x 4 1/2 | 3/4-10x4-1/2 a325 hvy hex bolt hdg domestic (rocap) b18.2.1 | 146 |
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| QFC | TX | Hex Head Cap Screw | Steel | Plain | 7/8-9 x 4 1/2 | 7/8-9x4-1/2 a325 hvy hex bolt domestic (rocap) b18.2.1 | 74 |
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| QFC | TX | Hex Head Cap Screw | Steel | Galvanized | 1 x 4 1/2 | 1x4 1/2 m/g a325-1 heavy hex cap screw n162398100% domestic b18.2.1 | 57 |
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| QFC | TX | Hex Head Cap Screw | Grade 2 | Galvanized | 5/16-18 x 4 1/2 | 5/16-18x4 1/2 hex c/s gr2 hdg b18.2.1 | 100 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1/2-13 x 4 1/2 | 1/2-13x4 1/2 hex c/s gr5 hdg b18.2.1 | 250 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Galvanized | 1/2 x 4 1/2 | 1/2x4-1/2nc gr5 hex cap screw full thread hdg (washer faced) b18.2.1 | 2 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 2 | Plain | 7/16-14 x 4 1/2 | 7/16-14 x 4 1/2 hex cap screws gr 2 plain b18.2.1 | 13 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Plain | 7/16-20 x 4 1/2 | 7/16-20 x 4 1/2 hex cap screws gr 8 plain b18.2.1 | 24 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Clear | 7/16-20 x 4 1/2 | 7/16-20 x 4 1/2 hex cap screws gr 8 zinc b18.2.1 | 10 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 7/16-20 x 4 1/2 | 7/16-20 x 4 1/2 hex cap screws gr 8 z yellow b18.2.1 | 34 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 2 | Plain | 1/2-13 x 4 1/2 | 1/2-13 x 4 1/2 hex cap screws gr 2 plain b18.2.1 | 11 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 1/2-13 x 4 1/2 | 1/2-13 x 4 1/2 hex cap screws gr 5 z yellow b18.2.1 | 13 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 hex cap screws gr 8 z yellow b18.2.1 | 104 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Plain | 9/16-12 x 4 1/2 | 9/16-12 x 4 1/2 hex cap screws gr 8 plain b18.2.1 | 29 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Plain | 9/16-18 x 4 1/2 | 9/16-18 x 4 1/2 hex cap screws gr 5 plain b18.2.1 | 25 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 9/16-18 x 4 1/2 | 9/16-18 x 4 1/2 hex cap screws gr 5 zinc b18.2.1 | 115 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 9/16-18 x 4 1/2 | 9/16-18 x 4 1/2 hex cap screws gr 8 z yellow b18.2.1 | 107 | Contact_Supplier |
| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Plain | 5/8-11 x 4 1/2 | 5/8-11 x 4 1/2 hex cap screws gr 5 plain b18.2.1 | 112 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Plain | 5/8-18 x 4 1/2 | 5/8-18 x 4 1/2 hex cap screws gr 5 plain b18.2.1 | 74 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 9 | Dip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.) | 3/4-10 x 4 1/2 | 3/4-10 x 4 1/2 hex cap screws gr 9 dacro b18.2.1 | 19 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 9 | Zinc/Clear | 3/4-10 x 4 1/2 | 3/4-10 x 4 1/2 hex cap screws gr 9 (mc12) zinc b18.2.1 | 6 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Plain | 3/4-16 x 4 1/2 | 3/4-16 x 4 1/2 hex cap screws gr 5 plain b18.2.1 | 85 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 3/4-16 x 4 1/2 | 3/4-16 x 4 1/2 hex cap screws gr 5 zinc b18.2.1 | 135 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 3/4-16 x 4 1/2 | 3/4-16 x 4 1/2 hex cap screws gr 8 z yellow b18.2.1 | 45 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 2 | Plain | 7/8-9 x 4 1/2 | 7/8-9 x 4 1/2 hex cap screws gr 2 plain b18.2.1 | 71 |
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| B & K FAST | PA | Hex Head Cap Screw | Grade 2 | Zinc/Yellow | 7/8-9 x 4 1/2 | 7/8-9 x 4 1/2 hex cap screws gr 2 z yellow b18.2.1 | 1 |
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