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National Stock Number:
5310-01-549-7750
Federal Supply Class:
5310
National Item Identification Number:
015497750
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:
| 10018915 | 61C19 | MIL-COTS CORPORATION | | 1133857 | 0Y3H3 | FASTENAL COMPANY | | MP31376 | 05573 | BARNES GROUP INC. | | 3007364 | 1EFH8 | GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. |
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Techincal Specification:
| MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | ZINC OVERALL | | CENTER HOLE SHAPE STYLE | ROUND | | HOLE DIAMETER | 0.307 INCHES MINIMUM AND | | 0.327 INCHES MAXIMUM | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 0.727 INCHES MINIMUM AND | | 0.749 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | BLANK RECTANGULAR | | THICKNESS | 0.014 INCHES MINIMUM AND | | 0.145 INCHES MAXIMUM | | COLOR | YELLOW OVERALL | | SPECIAL FEATURES | 1/4 INCH USS YELLOW ZINC PLATED THRU HARDENED WASHER; CORE HARDNESS HRC 38 TO 45 | | PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER FLAT |
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