Serving our customers with quality and safety first.
2a
RIGHT-Hand
0.503in. ⁓33/64"
0.625in. ⁓5/8"
flat countersunk
0.452in. and 0.507in.
1
cross recess type 1
0.250in. ⁓1/4"
20
80.0 degrees and 82.0 degrees
0.275in. and 0.289in.
countersink external teeth
0.019in. and 0.025in.
steel comp 1050 primary washer or steel comp 1551 primary washer or steel comp 1552 primary washer or steel comp 1053 primary washer or steel comp 1054 primary washer or steel comp 1055 primary washer or steel comp 1059 primary washer or steel comp 1060 primary washer or steel comp 1561 primary washer or steel comp 1566 primary washer
cadmium or zinc
unc
A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Precious metal content is unknown
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.