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nickel silver
21.0 mm
frame spectacle cable temples 46eye 22bridge B5 double bar
front and TEMPLES-Eyewire base metal of monel 400 (except pad parts, temple screws) containing not less that 66% nickel. base metal be plated with min 50 millionth inch (1.270 microns) gold electroplate. nickel subplating to base metal allowed. temple butt phosphorus bronze. cable winding be 3 layers with 18% NICKEL-Silver core, final layer widing of monel 400. alternate for gold plating, 20 millionth inch (0.508) gold electroplate with clear polymer protective coating allowed.nose pads be vinyl acetate or vinyl butyrate. cable tiemple covers not required. pad insert be pure nickel, rhodium plated. endpiece monoblock and bridge be 18%NICKLE-Silver. temple screws be stainless steel, gold color. pad arm have similar base metal content wi min 1.270 microns of gold electroplate. alternate: 0.508 micron gold eletroplate wwith polymer coating. surface gloss be high polished finish. conform to dscp drawing 24438.
double bar bridge with rocker nose pads
frame, spectacle, cable temples, 47 mm eye, 21 mm bridge
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Item does not contain precious metal.
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.