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National Stock Number:
5310-01-583-9188
Federal Supply Class:
5310
National Item Identification Number:
015839188
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:
| DTA189178 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 1.313 INCHES NOMINAL | | III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER, FLAT (HIGH STRENGTH) | | PERIPHERAL SHAPE STYLE | ROUND | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL DIAMETER | 3.250 INCHES NOMINAL | | SPECIAL FEATURES | MATERIAL: ARMOR PLATE, STEEL, WROUGHT, HIGH HARDNESS, IAW MIL-A-46100; OPTL MATERIAL: AROMR PLATE, ROLLER, HOMOGENEOUS STEEL, IAW MIL-A-12560, CLASS 1; OPTL MATERIAL: ALLOY STEEL PLATE, GRADE OPTL, IAW ASTM A514; OPTL MATERIAL: ALLOY STEEL PLATE, 4140, 4340 OR 8620, IAW ASTM A829 | | THICKNESS | 0.250 INCHES NOMINAL |
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