How do you tell the date on a screw type hose clamp I noticed some of mine have a big 74 stamped on but up front there seems to be a date like 4/65 in smaller numbers in front of that. Then I have some with a big 66 stamped on it but again in smaller numbers 4/65. What year are these clamps 74, 66, or 65's Thanks Larry
hose clamp date questions
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