1/4" Dia. All Steel Interlock HIGH Strength Rivet, PROTRUDING Head, with A .350 - .625 Grip Range (Pack of 50 Pieces) SSPI-08-10: Amazon.com: Industrial & Scientific
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Head Blind Rivets Rivet | Steel Protruding Head | Zinc Protruding Head | Al Blind Rivet - Rivets - Aliexpress
Hardware Specialty | 1/4" Nominal Dia., Protruding Head Bulbing Blind Rivet, Locked Spindle, Single Action, Monel 400, Grip Range .438" - .500"
Rivets - an overview | ScienceDirect Topics
100 Piece Structural Blind Rivet Protruding Head Steel Body 1/4" D 13/16 L New | eBay