3940-99-219-4107 BLOCK ASSEMBLY,SPECIAL Index 4210-99-219-4231 PRIMER DISENGAGING UNIT

National Stock Number:
5310-99-219-4108

Federal Supply Class:
5310

National Item Identification Number:
992194108

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.


Manufacturer Information:
G105/5609 ITEM 9K7705KNDS DEFENCE UK LIMITED
G105/5609/9K7705KNDS DEFENCE UK LIMITED


Techincal Specification:
CENTER HOLE SHAPE STYLEROUND
COLORNATURAL OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONBS 970 070-20 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER2.370 INCHES MINIMUM AND 2.390 INCHES MAXIMUM
SURFACE FINISH250.0 MICROINCHES ALL SURFACES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONBS 4921 CLASS 11AJHB NATIONAL SPEC 1ST TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC AND PASSIVATE OVERALL
THICKNESS0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM


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