SB8-4, .062-.250 RANGE, 1/4 STEEL RIVETSB8-4, .062-.250 RANGE, 1/4 STEEL RIVET 42181, 100 PER BOX, LETTER "F" DRILL SIZE REQUIRED, .500" RIVET LENGTH These Blind Rivets, or as they are commonly referred to as "Pop Rivets", are tubular and supplied with a mandrel through the center. These rivets are inserted and fully installed in a joint from only one side of the structure and the opposite side is "Blind", thus not seen or not accessible. The rivet assembly is inserted into a hole drilled through the parts to be joined and a rivet gun is used to draw the mandrel into the rivet. This expands the blind end of the rivet and then the mandrel snaps or "Pops" off! These types of rivets have non-locking mandrels and are sometimes not used in vibration type situations because the mandrels may fall out. Many sizes and ranges are available, as are aluminum and stainless steel styles.
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