| Diameter Tolerance [in. (mm)] | 0.5 (12.7)4.0 (101.6) | +0/-0.13 mm |
| 6.0 (152.4) & 8.0 (203.2) | +0/-0.25 mm |
| Elliptical Minor Axis | +0/-0.18 mm |
| Elliptical Major Axis | +0/-0.25 mm |
| Thickness Tolerance [in. (mm)] | 0.5 (12.7)4.0 (101.6) | ±0.25 mm |
| 6.0 (152.4) & 8.0 (203.2) | ±0.38 mm |
| Elliptical | ±0.25 mm |
| Clear Aperture | ≥central 80% of diameter |
| Chamfers [in. (mm)] | 0.5 (12.7) & 1.0 (25.4) | 0.250.76 mm face width x 45° ±15° |
| 1.181 (30.0)4.0 (101.6) | 0.381.14 mm face width x 45° ±15° |
| 6.0 (152.4) & 8.0 (203.2) | 0.511.52 mm face width x 45° ±15° |
| Elliptical | 0.381.14 mm face width x 45° ±15° |
| S2 Surface | Ground |
| Durability | MIL-C-675C |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (Unknown type Newport.Step.Product.XRefElement) |
| Damage Threshold | RM.2, 1000 W/cm2 CW, 2 J/cm2 with 10 nsec pulses at 325 nm, typical DM.8, DM.10 & DM.11, 500 W/cm2 CW, 2 J/cm2 with 10 nsec pulses within the wavelength range, typical All others, 500 W/cm2 CW, 1 J/cm2 with 10 nsec pulses within the wavelength range, typical |