To convert 5/32 to millimeters:
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5/32 inch equals 0.15625 inches.
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Since 1 inch equals 25.4 millimeters, multiply: 0.15625 × 25.4 ≈ 3.96875 mm.
So, a 5/32 inch rivet has a nominal diameter of about 3.97 mm (roughly 4.0 mm).
Notes and practical guidance:
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Rivet diameter is commonly specified as nominal; actual head and grip lengths vary by product line, so verify the specific part’s 4.0 mm nominal diameter and recommended hole size in the manufacturer’s datasheet.
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Hole size for a 4.0 mm rivet typically falls around 4.0 to 4.2 mm, depending on tolerance and rivet type (open-end, closed-end, aluminum vs steel) [general industry standard]. If precise fit is required, consult the rivet series you’re using to confirm the exact hole diameter.
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For quick reference, many suppliers list 5/32" rivets as 4.0 mm nominal diameter with grip ranges that translate to holes near 4.0–4.2 mm.
