Reply To: Johnson a

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October 30, 2025 at 12:11 am #301070
JOSEPH BRINCAT
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    The subject of obsolete screw sizes comes up often. Attached is a chart of the old ASME screw sizes. Note that many of the screws were available in several, now unavailable thread pitches. Also note several sizes (12, 14, 16) are deceiving close to our common 1/4 ” screws.

    Joe