Repairs to more than two adjacent oversize rivets, or replacing more than half the rivets with oversize rivets in any 10 inch length of pattern is prohibited. Repair limitations: The combined oversize rivet hole repairs and oversize countersink repairs should be limited to a maximum of 20 percent of the rivets, or 10 rivets in a single rivet pattern, whichever is less. The term "next larger size" shall be defined as the next larger diameter for the application, but not to exceed 1/32 inch increments for sizes up to 1/4 inch diameter and 1/16 inch increments for sizes above 1/4 inch. Oversize countersinks: When countersinks are enlarged beyond specified tolerances, the next larger size rivet may be used, provided pitch and edge margin design requirements are maintained. Burrs may be removed from rivet holes by chamfering to a depth not to exceed 10 percent of the stock thickness, or 0.032 inch, whichever is less. Mating surfaces should be cleaned before parts are riveted together, all chips, burrs and foreign material must be removed from the mating surfaces. Model: AB5-5CLD Catalog Page: N/A UNSPSC: 31162209 Country of Origin: China (subject to change) Item: 1F843. If piercing is used, all holes need be inspected for radial cracking. Piercing Only piercing tools which produce-true and clean holes, equivalent to acceptable drilled holes should be used. When drilling through more than one sheet, hold the sheets securely together so there is no misalignment of holes due to shifting or separation of the sheets. It is a good idea to drill initially to open up the hole and as soon as progress stops, give the mandrel a tap with a small punch and hammer. This makes the drill wander and cause wide spread damage. Andy points out that the Olympic pop rivets need a 30 drill to work properly, as the 30 is a 3/16 of a milli-scoch larger than 1/8'. ![]() Extreme pressure shall not be applied and holes shall not be punched through with the drill.Ĭ. The remains of the steel rivet mandrel live inside the aluminium rivet. What size drill bit for the 1/8 inch in pop rivits I ve seen the info for the Olympics but not the pop rivits. All holes shall be drilled normal (at 90 degrees) to the working surface.ī. Take a pin, center, or prick punch and hold it against the top of the rivet. ![]() A mandrel, a cylindrical body, and a head make up blind rivets. 1.Use a punch to put a divot in the head of the rivet. Drilling Rivet holes should be drilled in accordance with the following recommendationsĪ. MaPop rivets can also be called blind rivets and are an ingenious yet simple design for fastening sheet metals without screws.
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