Screw limit gauge / plug gauge

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last updated：Dec 10, 2025

オスコ産業

Proposing cost benefits! It is possible to reduce costs as a "working gauge" for on-site inspections.

We would like to introduce our "Thread Limit Gauges/Plug Gauges." The "Thread Limit Gauge" is of high quality and is priced at about one-third of domestic products. In ISO grade gauges, there is no longer a distinction between inspection and working sides for both through and blind holes. Additionally, the "Plug Gauge" is a gauge used to inspect the inner diameter of holes. It has a measuring face based on the maximum allowable dimension of the hole and a measuring end face based on the minimum allowable dimension. 【Features and Quality Standards of Thread Limit Gauges】 ■ Low-cost industrial thread gauges ■ ISO standards ■ Material: Gcr15 (equivalent to SUJ2) ■ Wear resistance: Hardened treatment HRC58-63 　* If necessary, inspection certificates from JQA (Japan Quality Assurance Organization) are also available for an additional fee. * For more details, please download the PDF or feel free to contact us.

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【Features of the Plug Gauge】 ■ High quality at less than half the price of domestic products ■ Has a measuring surface based on the maximum allowable dimension of the hole and a measuring end face based on the minimum allowable dimension *For more details, please download the PDF or feel free to contact us.