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National Stock Number:
5310-99-500-4510
Federal Supply Class:
5310
National Item Identification Number:
995004510
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:
| 2012678 | K6451 | BAE SYSTEMS MARINE LIMITED | | BS4320 | K7766 | BRITISH STANDARDS INSTITUTION | | STD/00008750 | K6451 | BAE SYSTEMS MARINE LIMITED | | STD/00117185 ITEM 19 | K6451 | BAE SYSTEMS MARINE LIMITED | | STD/00117185/19 | K6451 | BAE SYSTEMS MARINE LIMITED | | BS4320-M3-A2D | K7766 | BRITISH STANDARDS INSTITUTION | | STD/00117186 ITEM 30 | K6451 | BAE SYSTEMS MARINE LIMITED | | STD/00117186/30 | K6451 | BAE SYSTEMS MARINE LIMITED |
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Techincal Specification:
| OVERALL DIAMETER | 6.70 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DIN 267 PART 9 PROCESS GROUP D NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | THICKNESS | 0.40 MILLIMETERS MINIMUM AND 0.60 MILLIMETERS MAXIMUM | | CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 3.20 MILLIMETERS MINIMUM AND 3.40 MILLIMETERS MAXIMUM | | MATERIAL | STEEL COMP A2 OVERALL | | PERIPHERAL SHAPE STYLE | ROUND |
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