General Information

• Part Number: 0-057427

• Manufacturer: ZYGO（AMETEK）

• Product Type: Retaining Ring / Clamp Ring / Locking Collar（for ZMI laser head or interferometer optics）

• Application: Secures optical elements, lenses, or laser head modules in ZYGO interferometry systems

• Compatibility: ZMI‑7705（8070‑0902‑01X/03X）、ZMI‑501A（8080‑0338‑01）、GPI/Verifire series

Mechanical Specifications

• Material: Stainless Steel（304/316），black oxide finish

• Inner Diameter: ~40 mm（matching ZMI laser head barrel）

• Outer Diameter: ~48 mm

• Thickness: 3 mm（nominal）

• Thread: M45×0.75（standard ZYGO optical thread）

• Mounting: 2× M3 screw holes（for locking）

• Weight: ~20 g

Environmental & Performance

• Operating Temp: −20 °C to +70 °C

• Storage Temp: −40 °C to +80 °C

• Humidity: 0%–95% RH，non‑condensing

• Corrosion Resistance: Passivated，for cleanroom/industrial use

• Torque Rating: 0.8–1.0 N·m（installation torque）

• RoHS: Compliant（2011/65/EU）

Key Features

• OEM ZYGO precision：tight tolerance for optical alignment

• Anti‑loosening design：with set screw locking

• Durable black oxide：reduces light reflection in optical paths

• Easy installation：tool‑friendly screw holes

• Long‑term stability：no deformation under temperature cycling