BK7 Precision Windows

Material	Dimensions	Diameter Tolerance	Thickness Tolerance	Clear Aperture	Surface Quality	Parallelism	Coating
BK7 Grade A Fine Annealed	MM	+ 0 / -0.10 mm	±0.10 mm	90%	40-20 Scratch-Dig	< 30 Arc Seconds	Uncoated (See Coating Chart for Available Options)
* All dimensions are in mm

Part Number	Material	Diameter	Thickness	Flatness
W-BKP007	N-BK7	40	2	λ/4	Add to Quote
W-BKP009	N-BK7	50	10	λ/10	Add to Quote
W-BKP008	N-BK7	50	4	λ/4	Add to Quote
W-BKP006	N-BK7	25	6	λ/10	Add to Quote
W-BKP005	N-BK7	25	1.5	λ/4	Add to Quote
W-BKP003	N-BK7	12.5	6	λ/10	Add to Quote
W-BKP002	N-BK7	12.5	1	λ/4	Add to Quote

	Name	Quantity