Model: A51G20121-13

Key Washer
Description:

0.470 inches hole diameter, 0.703 inches outside diameter, 0.038 inches material thickness, 33.0 rockwell c hardness rating, navy special project .

Special Features:

Internal key located 135 degrees from external key

Properties:

Hole Diameter
Between 0.470 inches and 0.480 inches
Outside Diameter
Between 0.703 inches and 0.735 inches
External Prebent Key Length
Between 0.045 inches and 0.055 inches
External Prebent Key Width
Between 0.105 inches and 0.115 inches
Internal Straight Key Width
Between 0.059 inches and 0.065 inches
Distance From Centerline To Top Of Internal Key
Between 0.193 inches and 0.205 inches
Distance From Centerline To Inside Of Prebent Key
Between 0.351 inches and 0.367 inches
Overall Distance Including Keys
Between 0.738 inches and 0.764 inches
Material Thickness
0.038 inches
Hardness Rating
Between 33.0 rockwell c and 37.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4130
Material Specification
Mil-s-18729 military specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Mil-c-8837, type2, class1 military specification single treatment response
Style Designator
Key
Test Data Document
81349-mil-i-6868 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
5310-00-003-6542
Part Number
A51G20121-13
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 A51G20121-13 NSN 5310-00-003-6542

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
194160
UFC:
55210
LTL:
50.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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