National Aerospace Standards - Flat Washer - NAS1149F0563P
Genuine OEM Parts
Description: Flat Washer
Part Number: NAS1149F0563P
Alternate Part Number: AN960-516
Product Overview
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.
Specifications
| Cross-Sectional Shape Style | : | Rectangular | |
| Hole Diameter | : | 0.318" Inches Minimum and 0.338" Inches Maximum | |
| Peripheral Shape Style | : | Round | |
| Center Hole Shape Style | : | Round | |
| Thickness | : | 0.053" Inches Minimum and 0.073" Inches Maximum | |
| Overall Diameter | : | 0.557" Inches Minimum and 0.582" Inches Maximum | |
| End Item Identification | : | A4 bradley fighting vehicle; A3 bradley fighting vehicle | |
| Material | : | Steel Overall | |
| Material Document and Classification | : | MIL-S-7952 mil spec single material response or QQ-S-698 fed spec single material response overall | |
| Surface Treatment | : | Cadmium Overall | |
| Surface Treatment Document and Classification | : | QQ-P-416, ty 2, cl 3 fed spec single treatment response overall |
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