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National Stock Number:
5310-00-286-8914
Federal Supply Class:
5310
National Item Identification Number:
002868914
Description:
WASHER,FLAT
Detail:
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.
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Manufacturer Information:
| EE5812 | 28298 | SMITH AND SMITH AIRCRAFT CO |
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Techincal Specification:
| MATERIAL | STEEL COMP 1010 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.500 INCHES MINIMUM AND | | 0.505 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | THICKNESS | 0.029 INCHES MINIMUM AND | | 0.035 INCHES MAXIMUM | | HARDNESS RATING | 83.5 ROCKWELL B NOMINAL | | SPECIAL FEATURES | CENTER HOLE DIA 0.380 MIN IN,0.385 MAX IN | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 28298 | | DESIGN CONTROL REFERENCE | EE5812 |
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