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NSN: 5310-00-001-4825
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Part Numbers

Item Number Item Description
5710-18-16 Washer, Flat
911625-26 Washer, Flat

Master Requirement Codes

Code Translation
ABMX The style designation indicating the configuration that most nearly corresponds to the shape of the center hole.
AAGR The style designation indicating the configuration that most nearly corresponds to the cross-sectional shape of the item.
AAUB The length of a straight line which passes through the center of a hole, and terminates at the circumference.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
ADAV A measurement of the longest straight line across a circular cross-sectional plane.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
ABMW The style designation indicating the configuration that most nearly corresponds to the peripheral shape of the item.
SFTT The metallic, nonmetallic, and/or chemical properties with which the item is plated, dipped, and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
ABNM A measurement of the smallest dimension of an item, in distinction from length or width.

5710-18-16 Flat Washer

Cage 06481

Technical Definition

Washer, Flat, also referenced with federal logistics item name code 13393 - A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. the hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). the thickness cannot exceed 25 percent of the largest outside dimension. when the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. the maximum tolerance is applied to dimensions and used as a determining factor. items with separable lamination use shim. for items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. excludes disk, valve, graphite impregnated and lubricated items.

Technical Characteristics

Center Hole Shape Style (ABMX):
Cross-sectional Shape Style (AAGR):
Hole Diameter (AAUB):
0.115 inches minimum and 0.135 inches maximum
Material (MATT):
Steel comp 302 overall
Overall Diameter (ADAV):
0.302 inches minimum and 0.332 inches maximum
Material Document And Classification (MDCL):
Aisi cond a assn std single material response overall
Peripheral Shape Style (ABMW):
Surface Treatment (SFTT):
Passivate overall
Thickness (ABNM):
0.014 inches minimum and 0.018 inches maximum

National Stock Number (NSN)