
Ansco Co., Ltd.
VerifiedWebsite, address and certifications confirmed by forUdyog researchHex socket cap screws and set screws, from proposal and prototyping to mass production.
Overview
Ansco began in 1939 as Ando Iron Works. It makes precision fastening parts, mainly hex socket cap screws (SCM435 and SUSXM7 stainless) and hex socket set screws. These are used in automotive, machine tool and semiconductor applications. The company offers proposal, prototyping and volume production, and also takes special-shape orders such as long cap screws and machined items.
Production is in-house, from cold heading and machining through thread rolling, heat treatment and packing. Heat-treatment equipment is installed at both the Aichi and Saga plants. Ansco also applies anti-loosening treatments to screws: a reusable nylon type (under a licence agreement with US-based ND) and a pre-applied micro-capsule adhesive type.
The head office and plant are in Seto, Aichi. A second plant is in Arita, Saga (Kyushu), and a subsidiary plant, ANSCO (THAILAND) CO., LTD., is in Chonburi, Thailand. The company reports 120 employees. In October 2022 it became the first screw maker in Japan to receive SBT certification.
Products
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Catalogues & brochures
Certifications
3 listedFactory & locations

Ansco Co., Ltd.
VerifiedHex socket cap screws and set screws, from proposal and prototyping to mass production.
Overview
Ansco began in 1939 as Ando Iron Works. It makes precision fastening parts, mainly hex socket cap screws (SCM435 and SUSXM7 stainless) and hex socket set screws. These are used in automotive, machine tool and semiconductor applications. The company offers proposal, prototyping and volume production, and also takes special-shape orders such as long cap screws and machined items.
Production is in-house, from cold heading and machining through thread rolling, heat treatment and packing. Heat-treatment equipment is installed at both the Aichi and Saga plants. Ansco also applies anti-loosening treatments to screws: a reusable nylon type (under a licence agreement with US-based ND) and a pre-applied micro-capsule adhesive type.
The head office and plant are in Seto, Aichi. A second plant is in Arita, Saga (Kyushu), and a subsidiary plant, ANSCO (THAILAND) CO., LTD., is in Chonburi, Thailand. The company reports 120 employees. In October 2022 it became the first screw maker in Japan to receive SBT certification.
- Founded
- 1939
- Employees
- 120
- Head office
- 984 Anada-cho, Seto, Aichi, Japan
- Subsidiary
- ANSCO (THAILAND) CO., LTD. (est. 2012)
- Industry
- Metal products manufacturing
- Member of
- Japan Industrial Fasteners Association; Japan Socket Screw Industry Cooperative
- Main markets
- Automotive, machine tools, semiconductors
Products
Hex socket cap screwsSCM435SUSXM-78.8/10.9/12.9
Low-head cap screwsSCM43510.9 equiv.M3–M8
Flanged hex bolts
Sems cap screws (with washer)
Hex socket countersunk boltsSCM435SUSXM-710.9
Hex socket button boltsSCM435SUSXM-710.9/12.9
Hex socket set screws (hollow set screws)SCM435 (SAE8650)SUSXM-745H
AW-Point (double-point set screw)SCM435SUSXM-745H
Special and custom fasteners
Anti-loosening screws (A-ND, High-Temp, pre-coated)A-NDHigh-Temp 260°CPre-coat
Contact
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Factory
- Head office plant (Seto)
- Kyushu plant (Arita)
- Thailand plant (ANSCO (THAILAND) CO., LTD.)
