Flat Washer

BK258

BK258
(NSN) National Stock Number
5310-00-352-3085
Federal Supply Classification
5310 Nuts and Washers
Item Name Code
13393
Schedule B Code
-
Summary

Rectangular cross-sectional shape style, 1.625 inches nominal hole diameter, round peripheral shape style, round center hole shape style, 0.031 inches nominal thickness, 2.500 inches nominal overall diameter

DAC HCC DMIL RNCC
X - - 5
RNVC SADC MSDS RNAAC
9 - - XX
Identification

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.

INC FIIG Concept Condition
13393 A022B0 1 1
Specifications
Cross-Sectional Shape Style
rectangular
Details The style designation indicating the configuration that most nearly corresponds to the cross-sectional shape of the item.
Hole Diameter
1.625 inches nominal
Details The length of a straight line which passes through the center of a hole,and terminates at the circumference.
Peripheral Shape Style
round
Details The style designation indicating the configuration that most nearly corresponds to the peripheral shape of the item.
Center Hole Shape Style
round
Details The style designation indicating the configuration that most nearly corresponds to the shape of the center hole.
Thickness
0.031 inches nominal
Details A measurement of the smallest dimension of an item,in distinction from length or width.
Overall Diameter
2.500 inches nominal
Details A measurement of the longest straight line across a circular cross-sectional plane.
Material Document And Classification
mil-g-12803 mil spec single material response overall
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
4500291 6N299 5 - 5 2 - KZ
4500291-2 6N299 5 - 3 2 - KZ
B291 6N299 5 - 5 2 - KZ
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
95100 - W -
RVC WCC TCC SHC
- 573 Z 9

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Manufacturer
REXARC INTERNATIONAL DBA REXARC
CAGE: 89073
WEST ALEXANDRIA , OH , 45381-1231
UNITED STATES
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FAQs
Frequently asked questions for NSN 5310-00-352-3085
What is the NIIN of the NSN 5310-00-352-3085?
The National Item Identification Number (NIIN) of the NSN 5310-00-352-3085 is 00-352-3085
When the NSN 5310-00-352-3085 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Sun, Jan 1, 1961
Does the NSN 5310-00-352-3085 contain any precious metals?
Type/content is unknown
Does the NSN 5310-00-352-3085 contain any hazardous material?
No data in HMIRS

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