National Item Identification Number
00-187-2404
National Stock Number
Item Name
WASHER,FLAT
Federal Supply Class
5310
Referenced on: http://www.tpub.com/content/aviationmaintandmisc/TM-55-4920-328-23P/css/TM-55-4920-328-23P_34.htm
Referenced on: http://www.tpub.com/content/misc_manuals_3/TM-55-4920-328-13-2/TM-55-4920-328-13-20448.htmDescription
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.
Commercial and Government Entity Code (Supplier Data)
99193
82340
77294
Reference Numbers (Part Numbers)
AN960PD1216
AN960PD1216
AN960PD1216
23825-23826REVCPC13
2409-3265410PC13
24
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
SURFACE TREAT
Required Description
ALUMINUM ALLOY OVERALL
QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
AN
