Overview

Union Tool Co. is a Tokyo-headquartered manufacturer founded in 1955 that designs, makes, and sells cutting tools, linear motion products, and metal machining equipment. Its business began with carbide drills for printed circuit board manufacturing, and its lineup now includes PCB drills and routers, carbide end mills, and rolling and forging tools. The company employs between 1,000 and 5,000 people, is publicly listed under ticker 6278.T, and serves the automotive, electronics, electric-vehicle, renewable-energy, and industrial equipment sectors. In October 2026 it announced plans for a new factory and land acquisition.

At a glance

What Union Tool Co. makes

The company holds ISO 9001 and ISO 14001 certifications and lists PCB drills, carbide end mills, rolling dies, and measuring instruments among its products.

Products and capabilities described on the company's own site include Sensor, Electronics, PCB, Machining (source: uniontool.co.jp).

Certifications

Union Tool Co. is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:

• ISO 14001 — uniontool.co.jp

• ISO 9001 — uniontool.co.jp

Latest developments

• 2026-10-16 — Union Tool Co. Announces New Factory Construction and Land Acquisition Plan | October 2026 | Japan IR (japanir.jp)

• 2026-10-16 — UNION TOOL CO. Announces Construction Of Mitsuke No. 4 ... (marketscreener.com)

• 2026-04-06 — Union Tool Co., Ltd. to Raise Up to Approximately 26.9 Billion Yen through Disposal of Treasury Stock and Expand Production Capacity | Japan IR (japanir.jp)

• 2026-04-06 — Union Tool : Notice Concerning Disposal of Treasury Stock and Secondary Offering of Shares （193KB） | MarketScreener (marketscreener.com)

• 2025-03-03 — 福岡営業所開設のお知らせ | ユニオンツール株式会社 (uniontool.co.jp)

Company details

Union Tool Co. is publicly traded on the Tokyo market under ticker 6278.T and reports a revenue band of 256.5 million. Union Tool Co. was founded in 1955, has an estimated 1,000-5,000 employees, and is headquartered in Shinagawa, Tokyo. On the LightSource stability read it is rated "Established & strong": 71 years in operation (founded 1955). Publicly listed; no distress event on record. Holds ISO 14001, ISO 9001 certification(s) per public sources.

Frequently asked questions

What does Union Tool Co. make?

Union Tool Co. is a Tokyo-headquartered manufacturer founded in 1955 that designs, makes, and sells cutting tools, linear motion products, and metal machining equipment. Its business began with carbide drills for printed circuit board manufacturing, and its lineup now includes PCB drills and routers, carbide end mills, and rolling and forging tools. The company employs between 1,000 and 5,000 people, is publicly listed under ticker 6278.T, and serves the automotive, electronics, electric-vehicle, renewable-energy, and industrial equipment sectors. In October 2026 it announced plans for a new factory and land acquisition.

Where is Union Tool Co. headquartered?

Union Tool Co. is headquartered in Shinagawa, Tokyo (1, Shinagawa, Tokyo, 140-0013).

When was Union Tool Co. founded?

Union Tool Co. was founded in 1955.

How big is Union Tool Co.?

Union Tool Co. has an estimated 1,000-5,000 employees, with revenue in the 256.5M range.

Is Union Tool Co. publicly traded?

Publicly traded (JPX: 6278.T). Public financial figures are drawn from its filings.

What certifications does Union Tool Co. hold?

Union Tool Co. lists ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.

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Last verified Nov 2026. Is this your company? Request a correction.