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steel, carbon, fed QQ-S-631, 634 or 637, composition 1010, 1020, 1108 or 1119, cadmium plating, FED-QQ-P-416, class 3 type 2, surface harden to R15N 85 to 88 and to a depth of .015 to .030, 0.490 width, 0.875 length, 0.313 thickness, 1/4-28 UNF-2B, countersink 90.0 degrees plus or minus 10.0 degrees to 0.260 plus 0.020 diameter both side, lug length 0.281 lug width 0.240 minus 0.010, 0.245 center of threaded hole to outside edge along width and length
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.
Represents items with no adp components
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.