Model: 78A109

Key Washer

Special Features:

3 external keys; peening key 0.187 in. Wide

Properties:

Hole Diameter
Between 0.169 inches and 0.174 inches
Outside Diameter
0.280 inches
External Straight Key Length
0.094 inches
Peening Key Length
0.288 inches
External Straight Key Width
0.093 inches
Overall Distance Including Keys
0.703 inches
Material Thickness
0.036 inches
Material
Steel
Surface Treatment
Cadmium or nickel
Surface Treatment Specification
M-s 284-154, fscm 96152 mfr ref 1st treatment response or m-s 284-151, fscm 96152 mfr ref 2nd treatment response
Style Designator
Key
NSN
5310-00-400-7764
Part Number
78A109
Description
Washer,key
CAGE

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes thrust type washer.

Part 78A109 NSN 5310-00-400-7764

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01869
FIIG:
A022B0
Concept No.:
1
App. Key:
A
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: 7318220000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Washers other than lock washers, iron or steel

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