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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.
166,432 Hex Head Cap Screw, showing 200, (click on any line for more information)
| Search Results Sponsored by Spring Bolt & Nut Mfg., your source for Hex Head Cap Screws. For more results, visit www.springboltandnut.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Spring Bo | TX | Hex Head Cap Screw | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/16-18 x 1/2 | 5/16(18) x 1/2 hex cap screw A453 grade 660B (A286) b18.2.1 b18.2.1 usa | inquire |
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| Spring Bo | TX | Hex Head Cap Screw | Duplex Stainless (2205, Ferralium etc.) | Plain | 5/16-18 x 3/4 | 5/16(18) x 3/4 hex cap screw d2205 b18.2.1 b18.2.1 usa | inquire |
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| Spring Bo | TX | Hex Head Cap Screw | Duplex Stainless (2205, Ferralium etc.) | Plain | 5/16-18 x 1 3/4 | 5/16(18) x 1-3/4 hex cap screw d2205 b18.2.1 b18.2.1 usa | inquire |
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| Spring Bo | TX | Hex Head Cap Screw | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/16-18 x 1 | 5/16(18) x 1 hex cap screw al6xn b18.2.1 b18.2.1 usa | inquire |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 12 | 5/16-18x12 hex cap gr5 triv znc | 54 |
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| Mansco | MI | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 7/8 | 5/16-18x7/8 hex cap 18-8 s/s | 2,300 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 | 5/16-18x3 hex cap gr5 znc 100/box | 1,460 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/8 | 5/16-18x1-1/8 hex cap gr5 triv znc 25/bag | 55 |
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| Mansco | MI | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 1/4 | 5/16-18x1-1/4 hex cap 18-8 s/s 100/box | 850 |
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| Mansco | MI | Hex Head Cap Screw | Grade 2 | Zinc/Black | 5/16-18 x 3 | 5/16-18x3 hex cap gr2 triv blk znc | 350 |
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| Mansco | MI | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/4 | 5/16-18x1-1/4 hex cap gr2 pln | 1,000 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 hex cap gr5 znc | 395 |
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| Mansco | MI | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 | 5/16-18x2 hex cap gr2 triv znc | 400 |
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| Mansco | MI | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 hex cap brass | 54 |
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| Mansco | MI | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 | 5/16-18x2 hex cap gr8 znc yellow 100/box | 300 |
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| Mansco | MI | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 5 1/2 | 5/16-18x5-1/2 hex cap gr2 triv znc | 92 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 | 5/16-18x4 hex cap gr5 znc 50/box | 157 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 | 5/16-18x4 hex cap gr5 triv znc | 96 |
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| Mansco | MI | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 hex cap gr8 znc yellow 50/box | 132 |
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| Mansco | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 6 | 5/16-18x6 hex cap gr5 znc 50/box | 25 |
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| CIF | IL | Hex Head Cap Screw | Grade 8 | Phosphate | 5/16-18 x 5/8 | 5/16-18x5/8 hex cap screw grade 8 phos coated for 72 hours to red rust | 42 |
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| CIF | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 1/2 | 5/16-18x2 1/2 hex cap screw 18-8 s/s steel | 50 |
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| CIF | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 hex cap screw partial thread 18-8 s/s steel | 50 |
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| CIF | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 3/4 | 5/16-18x1 3/4 hex cap screw full thread 18-8 s/s steel | 102 |
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| CIF | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18x1 hex cap screw 18-8 s/s steel | 126 |
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| CIF | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 | 5/16-18x2 hex cap screw 18-8 s/s steel | 350 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/2 | hex cap zp | 550 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 6 | 5/16-18 x 6 hex cap screw zinc pl | 350 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3 | hex cap z | 5200 |
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| American | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 | 5/16-18 x 2 hex cap grade 5 zp | 23 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 hex cap 5 zp | 1550 |
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| American | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/2 | 5/16-18 x 2 1/2 hex cap grade 5 zp | 694 |
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| American | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 | hex cap zp | 2100 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 2 3/4 | 5/16-18 x 2 3/4 hex cap 5 zp | 1090 |
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| American | NY | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 5/8 | 5/16-18 x 5/8 hex cap stainless | 350 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18 x 1/2 hex cap bolt zp | 1400 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 hex cap zp | 625 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 2 1/2 | hex cap | 900 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 5 | 5/16-18 x 5 hex cap screw zinc pl | 100 |
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| American | NY | Hex Head Cap Screw | Grade 5 | Black Oxide | 5/16-18 x 1/2 | 5/16-18 x 1/2 hex cap grade 5 black ox | 1750 |
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| American | NY | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex cap screw plain | 500 |
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| American | NY | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex cap 5 black | 1150 |
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| IRF | NC | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18x3/4 ind hex flat washer sems dog point w/patch with zn/ni with clear Cr3+ cr(3+) | 369534 |
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| IRF | NC | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 1/2 | hex cap | 2250 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 | hex c/sr | 920 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1 | hex c/sr | 1450 |
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| IRF | NC | Hex Head Cap Screw | Grade 8 | Zinc/Clear | 5/16-18 x 1 | hex c/sr | 1086 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Aluminum zinc flake (Dacromet, Magnigard, Doerken) | 5/16-18 x 1 | hex c/sr clr & magnagard | 105 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Zinc/Yellow | 5/16-18 x 1 | hex c/sr ylw cad mag | 2852 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 | hex c/sr | 4180 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 1 3/4 | hex c/sr | 1275 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/2 | hex c/sr clr cad mag | 1830 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Zinc/Black | 5/16-18 x 1 3/4 | hex c/sr | 1800 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | hex c/sr | 2270 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 7/8 | hex c/sr | 1406 |
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| IRF | NC | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 | hex c/sr | 700 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Zinc/Yellow | 5/16-18 x 2 | hex c/sr ylw cad mag | 224 |
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| IRF | NC | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 | hex c/sr | 1000 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1/2 | hex c/s | 100 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3/4 | hex c/s | 500 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1 | hex c/s | 2100 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1/2 | hex c/s | 230 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1/2 | hex c/s | 1700 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1 | hex c/s | 45800 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 8 | hex c/s | 125 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 2 | hex c/s | 187 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 8 | hex c/s | 35 |
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| UNEEDA | NJ | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3/4 | hex c/sr gr.5 | 610 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3 | hex c/s | 160 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 7/8 | hex c/s | 1300 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1 | hex c/s | 500 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3/4 | hex c/s | 338 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 7/8 | hex c/s | 300 |
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| UNEEDA | NJ | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 5/8 | hex c/s | 800 |
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| Olander | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 | 5/16-18 x 2 hex hd f/t sst rohs | 1607 |
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| ACF | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 | 5/16-18x2 hex cap screw grade 2 z/p rohs compliant | 8400 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1/2 | hhcs gr2 | 2160 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3 3/4 | hhcs grd 5 zin | 383 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 3/8 | hhcs z&y | 255 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 4 | hhcs gr2 | 239 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 6 | hhcs gr2 | 312 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 7 | hhcs gr5 | 225 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/8 | hhcs gr5 | 200 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 5 | hhcs gr2 | 200 |
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| OBRIEN | OH | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 3/4 | hhcs 316 stainless | 192 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3 1/4 | hhcs grd 5 zin | 97 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade B8 | Plain | 5/16-18 x 1 1/4 | hhcs sa193-b8 s/s | 96 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 5/8 | hhcs z&y | 84 |
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| OBRIEN | OH | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 7/8 | hhcs 316 stainless | 79 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3 1/4 | hhcs gr8 | 49 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 6 | hhcs gr8 | 48 |
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| OBRIEN | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 4 1/2 | hhcs gr8 | 48 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 2 | c/s gr#5 | 1000 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3 | c/s gr#5 | 50 |
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| AFP | IL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3 | c/s gr # 2 | 700 |
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| AFP | IL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3 1/4 | c/s gr#5 | 400 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3/4 | c/s gr#5 | 3907 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 5 1/2 | 5/16-18x5-1/2 c/s gr#5 dichromate | 600 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 1 1/4 | c/s gr#8 | 3186 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 1 | c/s gr# 5 | 1225 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 | c/s gr#2 | 2115 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 1 | c/s gr#8 & dichromate | 808 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 3/4 | c/s gr#5 | 909 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1/2 | c/s gr#5 | 3100 |
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| AFP | IL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 5 1/2 | 5/16-18x5-1/2 c/s gr#5 | 200 |
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| AFP | IL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 4 1/2 | 5/16-18x4-1/2 c/s gr#5 | 300 |
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| AFP | IL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 5 | c/s gr#5 | 200 |
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| AFP | IL | Hex Head Cap Screw | Steel | Zinc/Yellow | 5/16-18 x 2 3/4 | c/s gr#8 dichromate | 198 |
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| THRDFAST | OK | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3 1/2 | gr8 hex c/s z&y b18.2.1 | 125 |
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| THRDFAST | OK | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1 1/2 | gr2 hex c/s b18.2.1 | 45 |
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| THRDFAST | OK | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 1/4 | t-316 ss hex c/s b18.2.1 | 38 |
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| THRDFAST | OK | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1 1/2 | hex c/s b18.2.1 | 32 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/2 | gr2 hex c/s b18.2.1 | 2,398 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 2 | gr2 hex c/s b18.2.1 | 500 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1 3/4 | gr2 hex c/s b18.2.1 | 500 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 3/4 | gr8 hex c/s z&y b18.2.1 | 477 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 3 | gr2 hex c/s b18.2.1 | 303 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 5 1/2 | gr5 hex c/s b18.2.1 | 285 |
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| THRDFAST | TN | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1/2 | t-316 ss hex c/s b18.2.1 | 233 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 5 | gr8 hex c/s z&y b18.2.1 | 250 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 7/8 | gr2 hex c/s b18.2.1 | 200 |
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| THRDFAST | TN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 5 | 18-8 ss hex c/s b18.2.1 | 100 |
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| THRDFAST | TN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 6 | gr8 hex c/s z&y b18.2.1 | 100 |
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| THRDFAST | TN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 4 1/2 | 18-8 ss hex c/s b18.2.1 | 93 |
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| Spencer | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 5 3/4 | 9600 |
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