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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.
164,217 Hex Head Cap Screw, 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 | |
| Irwin Ind | Ont | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 flat s0c capscrew steel zinc triv clear b18.2.1 () | 1000 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 2 | Zinc/Black | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1 () | 310 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 2 | Zinc/Black | 5/16-18 x 1 | 5/16-18 x 1 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1 () | 1438 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 3/4 | 5/16-18 x 2-3/4 unc gr.8 hhcs zinc dichromate b18.2.1 () | 75 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3 | 5/16-18 x 3 unc hhcs gr8 steel zinc dichromate b18.2.1 () | 50 |
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| Irwin Ind | Ont | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18 x 1 unc hhcs stainless steel b18.2.1 () | 2456 |
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| Irwin Ind | Ont | 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 capscrew stainless steel b18.2.1 () | 842 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Silicon Bronze | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1-1/4 hhcs silicon bronze b18.2.1 () | 2000 |
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| Irwin Ind | Ont | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 unc hex hd. capscrew 18.8 stainless steel b18.2.1 () () | 547 |
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| Irwin Ind | Ont | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 unc hhcs stainless steel b18.2.1 () | 350 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18 x 3-1/2 grade 5 hhcs zinc triv clear b18.2.1 () | 150 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 3 | 5/16-18 x 3 unc gr5 hhcs zinc dichromate b18.2.1 () | 188 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18 x 1/2 unc gr5 hhcs zinc rohs and scotch grip b18.2.1 () | 850 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 7/8 | 5/16-18 x 7/8 grade hhcs zinc with scotchgrip patch b18.2.1 () | 200 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 unc gr5 hhcs zinc triv clear b18.2.1 () | 574 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 steel gr 5 hhcs znc triv clr w/ 3m scotchgrip b18.2.1 () | 250 |
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| BDS FASTE | WI | Hex Head Cap Screw | 316, 317, A4 Stainless | Passivated | 5/16-18 x 5/8 | 5/16-18 x 5/8 hex cap screw 316ss passivate per qqp35c type 6 | 96,000 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 7/8 | scr hhcs grade 5 (zy) 5/16-18x7/8 | 265,665 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | scr hhcs (18 8) 5/16-18x1 | 98,483 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 | scr hhcs grade 5 (zt) 5/16-18x1 | 120 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3 | scr hhcs grade 8 (zy) 5/16-18x3 | 27,152 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 9 | scr hhcs grade 5 (zn) 5/16-18x9 | 550 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 | scr hhcs (18 8) 5/16-18x2 | 14,641 |
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| Wurth Ada | MN | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3/4 | scr t/c/s type-23 hexwhd-(zn) 5/16-18x3/4 | 4,977 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 | scr hhcs grade 8 (zy) 5/16-18x1 | 54,471 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 1 1/4 | scr hhcs ft grade 5 (zy) 5/16-18x1 1/4 | 22,302 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 | scr hhcs ft (18 8) 5/16-18x3 | 6,700 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 1/4 | scr hhcs grade 8 (zy) 5/16-18x2 1/4 | 22,073 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 | scr hhcs grade 5 (zt) 5/16-18x4 | 40,824 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 4 | scr hhcs grade 5 (zy) 5/16-18x4 | 10,126 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 1/2 | scr hhcs grade 8 (zy) 5/16-18x2 1/2 | 16,988 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 | scr hhcs grade 5 (zn) 5/16-18x1 | 52,199 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | scr hhcs ft (18 8) 5/16-18x1 | 20,002 |
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| Irwin Ind | Ont | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 1 | 5/16-18 x 1 unc gr.5 hex caps zinc dichromate b18.2.1 | 800 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 3/4 | gr2 hex c/s b18.2.1 | 9,790 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 2 3/4 | gr2 hex c/s b18.2.1 | 9,334 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 2 | gr2 hex c/s b18.2.1 | 3,506 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 3 1/4 | gr2 hex c/s b18.2.1 | 1,555 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 3 1/2 | gr2 hex c/s b18.2.1 | 1,400 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 2 1/4 | gr2 hex c/s b18.2.1 | 1,420 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3/8 | gr2 hex c/s b18.2.1 | 1,096 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/4 | gr2 hex c/s b18.2.1 | 629 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 4 | gr2 hex c/s b18.2.1 | 617 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/2 | gr2 hex c/s b18.2.1 | 1,023 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 3 3/4 | gr2 hex c/s b18.2.1 | 502 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 5 | gr2 hex c/s b18.2.1 | 429 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 6 | gr2 hex c/s b18.2.1 | 425 |
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| THRDFAST | FL | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 2 | hex c/s b18.2.1 | 372 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 1/4 | gr2 hex c/s b18.2.1 | 964 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 5 1/2 | gr2 hex c/s b18.2.1 | 904 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 2 1/2 | nc gr5 hex c/s zb imp | 36 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 7/8 | nc gr5 hex c/s pl imp | 393 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 3 1/4 | nc gr5 hex c/s zb imp | 39 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 7/8 | nc gr5 hex c/s zb imp | 242 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 1 1/2 | nc gr5 hex c/s zb imp | 13 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 1 1/4 | nc gr5 hex c/s zb imp | 33 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 3 | nc gr5 hex c/s zb imp | 4 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 1/4 | nc gr5 hex c/s pl imp | 476 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 5/8 | nc gr5 hex c/s zb imp | 869 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 1/2 | nc gr5 hex c/s zb imp | 728 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 5 1/2 | nc gr5 hex c/s zb imp | 91 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 4 | nc gr5 hex c/s zb imp | 3 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 6 | nc gr5 hex c/s pl imp | 49 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 5 1/2 | nc gr5 hex c/s pl imp | 16 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3 1/2 | nc gr5 hex c/s pl imp | 35 |
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| Valley Nu | WA | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 6 | nc gr5 hex c/s zb imp | 4 |
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| QFS | MI | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1/2 | c/s , USS thread b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1 1/2 | c/s , USS thread b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1 3/4 | c/s , USS thread b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 2 | c/s , USS thread b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 3/4 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1/2 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 5/8 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 3/4 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 2 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 2 1/4 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 4 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 3 1/2 | c/s , USS thread (t-316) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 5/8 | c/s , USS thread (18-8) b18.2.1 | stock |
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| QFS | MI | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/4 | c/s , USS thread (18-8) b18.2.1 | 300 |
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| QFS | MI | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1/2 | c/s , USS thread (18-8) b18.2.1 | 400 |
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