1/4-28 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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SupplierLocTypeMaterialFinishSizeDescriptionQty 
JacksonMSFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-281/4-28 nf serrated whiz flange locknut1031
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Wurth AdaMNFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-28nut hex serrated flange steel (zn) 1/4-287,200
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Irwin IndOntFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-28 x 1/21/4-28 x 1/2 flange head whiz lock screw stl zinc1600
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ACFCAFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-281/4-28 grade f nylon insert hex flange locknut z/p rohs4000
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OlanderCAFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-281/4-28 flange nut whizlok stl zn nonrohs3992
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Kanebridge ILFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-28 x 11/4-28x1 serrated hex flanged washer full thread screw case hard zinc & bake62.500
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Kanebridge ILFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-28 x 1/21/4-28x1/2 serrated hex flanged washer full thread screw case hard zinc & bake75,000
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Kanebridge ILFlange Screw w serr. (Whiz-Lock eq.)SteelZinc/Clear1/4-28 x 3/41/4-28x3/4 serrated hex flanged washer full thread screw case hard zinc & bake75,000
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