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The particular design of the NUT II P three-in-one nut-washer-cap combo combats annoying lens wobble by providing inherent torque even if nut is loosened (standard metal screw/nut/washer combinations, upon slight movement, lose 100% of their inherent torque, thus leading to the annoying loosening of frames).
The special design of the polycarbonate coating over the metal nut performs three functions:
Replaces plastic cap
Replaces plastic washer
Retains nut torque in place of “locking resin†traditionally used on screws
Great service with top quality products. I’ve been in Opticianry for almost 20 years and I’ve used McCray since the beginning. They also do very nice custom work! I highly recommend.
Fantastic products, great custom work and amazing tools… they always have what I’m looking for. Love dealing with them as the staff are friendly and extremely knowledgeable.
The go to place for all optical supply needs. One thing I love most about McCray is the amazing customer service and how prompt they are in regards to follow ups and communication
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