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BK7 STANDARD WINDOWS

Material	Dimensions	Diameter Tolerance	Thickness Tolerance	Clear Aperture	Surface Quality	Parallelism	Coating
BK7 Grade A Fine Annealed	MM	±0.10 mm	±0.10 mm	85%	60-40 Scratch-Dig	< 3 Arc Minutes	Uncoated (See Coating Chart for Available Options)
* All dimensions are in mm

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Part Number	Material	Diameter	Thickness	Flatness
W-BKS010	N-BK7	50.00	3	1 λ	Add to Quote
W-BKS007	N-BK7	25.00	3	1 λ	Add to Quote
W-BKS004	N-BK7	12.50	3	1 λ	Add to Quote
W-BKS003	N-BK7	10.00	1	2 λ	Add to Quote

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	Name	Quantity