Model: 3-16SILIC0NWASHER

Flat Washer

Properties:

Cross Sectional Shape
Rectangular
Hole Diameter
Between 0.240 inches and 0.260 inches
Edge Shape
Round
Center Hole Shape
1 round
Center Hole Shape
Round
Thickness
Between 0.036 inches and 0.065 inches
Overall Diameter
Between 0.495 inches and 0.515 inches
Material
Copper alloy 655
Material Specification
Qq-c-591 federal specification single material response
NSN
5310-00-685-7540
Part Number
3-16SILIC0NWASHER
Description
Washer,flat
CAGE
57472

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.

Part 3-16SILIC0NWASHER NSN 5310-00-685-7540

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
13393
FIIG:
A022B0
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7415210000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper washers including spring washers not threaded

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