1-8 LH to 1/2-28 RH Threaded Adapter

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Bounding box: 25.5 × 25.5 × 53.2 mm
Engine: Precision B-rep
Parameters: 10
Published: October 28, 2026

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The prompt

center bore at 0.223 inches.

Parameters

Name	Value	Range
Big-end major diameter	25.4 mm	10 – 60
Big-end threads per inch	8 TPI	4 – 32
Small-end major diameter	12.7 mm	5 – 40
Small-end threads per inch	28 TPI	8 – 56
Small-end outer diameter	15 mm	8 – 50
Center bore diameter (0.223 in)	5.66 mm	1 – 20
Overall length	50 mm	10 – 200
Big-end thread length	25 mm	5 – 150
Big thread left-hand (1 = yes, 0 = no)	1	0 – 1
Small thread left-hand (1 = yes, 0 = no)	0	0 – 1

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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