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5/16 Serrated Flange Screws
Serrated Flange Screws, Serrated Flange Bolts and commonly known by their trade name as Whiz-Lock Bolts, are unslotted hex head flange screws that have serrations under the flange, or on the bearing surface. The flange provides more strength than a regular hex screw, and in some applications, the serrations eliminate the need for lock washers or lock nuts.
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| Buy Serrated Flange Screws from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Jackson | MS | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16 | 5/16 nc serrated whiz flange locknut | 7293.75 |
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| Jackson | MS | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-24 | 5/16-24 nf serrated whiz flange locknut | 3531 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 | 5/16-18 flanged serrated whizlock nut 18-8 304 18-8 | 1291 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Yellow | 5/16-18 | 5/16-18 flanged serrated whiz lock nut | 69525 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 | 5/16-18 flanged serrated whizlock nut | 2771 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18x1 1/4 flanged serrated whiz lock screw gr.5 | 538 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18x1 flanged serrated whizlock screw 18-8 304 18-8 | 10 |
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| MESAFAST | CA | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Plain | 5/16-18 x 1 | ns hwh serrated fl/b | 28,174.0 |
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| MESAFAST | CA | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Plain | 5/16-18 x 3/4 | hwh fl/b serrated | 240.0 |
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| MESAFAST | CA | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Black Oxide | 5/16-18 x 1/2 | indented hwh serrated fl/b | 1,000.0 |
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| MESAFAST | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 | 5/16-18 x 1 hex flange bolt w/serrations gr5 steel zinc | steel zinc | steel zinc | 90.0 |
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| MESAFAST | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex flange bolt w/serrations gr5 f/t steel zinc | f/t steel zinc | f/t steel zinc | 90.0 |
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| Irwin Ind | Ont | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18 x 1 serrated hex wshr full thread flange screw 18.8 | 4180 |
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| Set Screw | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x .50 .2 | serrated fl/b & bake per print #4319 | inquire |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18x3/4 flanged serrated whiz lock screw gr.5 | 2400 |
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| GLF | OH | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 x 1 | 5/16-18x1 hwh serr flange screw stl zc () () () | 200 |
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| GLF | OH | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18x1/2 indented hwh serr flange screw grade 5 stl zc () () () | 469 |
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| American | NY | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Plain | 5/16-18 x 1 | hex washer serr fl/b | 500 |
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| American | NY | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Plain | 5/16-18 x 1 | hex flange serr black | 6190 |
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| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 x 1 | 5/16-18x1 flanged serrated whizlock screw #3116mww5 | 1000 |
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| Endries | WI | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1/2 | 5/16-18x1/2 18-8 stainless steel serrated hex flange screw | 1000 |
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| SWACO | OH | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18x1 serr hex flange bolt 18-8 | 171 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 | 5/16-18 x 1 whiz flangeblt gr 5 znc | 1056 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18 x 1 whiz flangeblt s/s | 108 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 whiz flangeblt gr 5 znc | 797 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18 x 1/2 whiz flangeblt gr 5 znc | 400 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 whiz flangeblt gr 5 znc | 362 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 whiz flng blt s/s | 2126 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18 x 1 whiz flange bolt s/s w/nylon patch | 48 |
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| ASMC | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | (ft) coarse gr5 hex fl/b with serration med carb zp | 400 |
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| ASMC | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/4 | (ft) coarse gr5 hex fl/b with serration med carb zp | 500 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 whiz flangeblt gr 5 znc | 350 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18 x 1/2 whiz flangeblt gr 5 znc | 400 |
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| Ababa | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 whiz flangeblt gr 5 znc | 200 |
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| ACCURATE | IL | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 5/8 | serrated hwh flange scr 18-8 s/s | 13 |
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| ACCURATE | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Phosphate | 5/16-18 x 1 1/2 | serrated gr8 hex flange fr/b blk phos | 1200 |
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| ACCURATE | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 3/4 | serrated hwh fl/b gr5 | 220 |
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| ACCURATE | IL | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-24 | serr. hex flange locknut 18-8 s/s (fine thread) | 88 |
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| ACCURATE | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 | serrated hwh fl/b gr5 | 781 |
|
| Hayes | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 serrated flange screw grade 5 zinc | 700 |
|
| TownCountry | AR | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 flanged serrated whizlock screw 18-8 304 18-8 | 500 |
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| Purchase | MO | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 serr hex flange bolt gr. 5 steel zinc | 2000 |
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| HBBOLT | CA | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 2 | hwh gr.5 serrated fl/b | 984 |
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| HBBOLT | CA | Flange Screw w serr. (Whiz-Lock eq.) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | hex wsh serratd fl/b ss | 300 |
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| HBBOLT | CA | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 x 1/2 | hex serraded grd.5 fl/b z/p | 190 |
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| Kanebridge | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/2 | 5/16-18x2 1/2 serrate hex flange ft gr5 zinc | 7.500 |
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| Kanebridge | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3 | 5/16-18x3 serrate hex flange ft gr5 zinc | 12.500 |
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| Kanebridge | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 serrate hex flange ft gr5 zinc | 7.500 |
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| Kanebridge | IL | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 4 | 5/16-18x4 serrate hex flange ft gr5 zinc | 7.500 |
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| Wurth | Ont | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 x 3/4 | scr hex flange ser chard (zn) 5/16-18x3/4 | 200 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Zinc/Yellow | 5/16-18 x 3/4 | scr hex flange unserrated grade 8 (zy) 5/16-18x3/4 | 146,447 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Phosphate | 5/16-18 x 1 1/4 | scr hex flange unserrated grade 8 (po) 5/16-18x1 1/4 | 136,453 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 | nut hex serrated flange grade 5 (zn) 5/16-18 | 114,790 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | scr hex flange serrated grade 5 (zt) 5/16-18x1 1/2 | 28,157 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Zinc/Yellow | 5/16-18 x 2 3/4 | scr hex flange unserrated grade 8 (zy) 5/16-18x2 3/4 | 2,594 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 x 3/4 | scr hex flange serrated charound (zt) 5/16-18x3/4 | 14,400 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Phosphate | 5/16-18 | nut hex serrated flange grade 8 (po) 5/16-18 | 12,553 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Yellow | 5/16-18 x 1 1/4 | scr hex flange unserrated grade 5 (zy) 5/16-18x1 1/4 | 6,150 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | scr hex flange serrated grade 5 (zn) 5/16-18x1/2 | 9,925 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | scr hex flange serrated grade 5 (zt) 5/16-18x3/4 | 7,225 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 | nut hex serrated flange steel (zn) 5/16-18 | 17,265 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 1 3/4 | scr hex flange serrated grade 5 (zn) 5/16-18x1 3/4 | 2,300 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Phosphate | 5/16-18 x 1 | scr hex flange serrated grade 5 (po) 5/16-18x1 | 1,099 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Plain | 5/16-18 x 2 1/2 | scr hex flange unserrated grade 8 zt 5/16-18x2 1/2 | 1,090 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Yellow | 5/16-24 | nut hex serrated flange steel (zy) 5/16-24 | 11,662 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-24 x 3/4 | scr hex flange serrated grade 5 (zt) 5/16-24x3/4 | 3,948 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Black | 5/16-18 x 1 1/4 | scr hex flange serrated grade 5 (bz) 5/16-18x1 1/4 | 2,185 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 8 | Zinc/Yellow | 5/16-18 x 2 1/2 | scr hex flange unserrated grade 8 (zy) 5/16-18x2 1/2 | 854 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 5/8 | scr hex flange serrated grade 5 (zn) 5/16-18x5/8 | 3,135 |
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| Wurth Ada | MN | Flange Screw w serr. (Whiz-Lock eq.) | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/4 | scr hex flange unserrated grade 5 (zn) 5/16-18x2 1/4 | 1,300 |
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| THRDFAST | FL | Flange Screw w serr. (Whiz-Lock eq.) | Steel | Zinc/Clear | 5/16-18 | 5/16-18 flange whiz lock nut | 150 |
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