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Specifications:MS20470AD series Universal Head • Solid 2117-T4 Aluminum Alloy
CERTIFICATION: We offer solid rivets in 1/4LB packages which are
uncertified, and in 1LB packages that are certified. The difference is simply
that the 1LB package (whose part number ends in "C") is guaranteed to preserve
the manufacturer's LOT numbers; whereas the 1/4LB package may contain a mixture
of 2 or more lot numbers and is therefore untraceable. Whether or not you need
"certified" rivets usually depends on the nature of the job. Generally speaking, repairs do not require traceable rivets, but definitely
consider using them when consistency is required for major sheet metal fabrications
or repairs. It's also a good idea write down the manufacturer and LOT number in your
maintenance logs for future reference.
Measure the grip thickness of
the section to be riveted (A+B), and add to that 1.5
times the rivet diameter. Round result to nearest 1/16" to get
A= .030, B= .250, Rivet Diameter (D) = .125 (1/8")
Grip Thickness = A+B= .280
Length (L)= .280 +1.5*(.125)= .4675
Multiply by 16 and round up to find the nearest 1/16: Length*16 = 7.48
The correct length is a -7 (e.g. MS20470AD-4-7 for a 1/4lb pack or MS20470AD-4-7C
for a certified 1LB pack).
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