Model: 4M248-1

Key Washer

Special Features:

Distance from wire hole center to end of tapered key 0.060 in.; distance from wire hole center to top of tapered prebent key 0.120 in.; tapered key prebent 30 degrees min, 40 degrees max; hole width across flats 0.655 in. Min, 0.670 in. Max; distance from centerline to flatted bottom of washer 0.485 in. Min, 0.515 in. Max; distance from bottom of washer to inside of prebent key 1.160 in.

Properties:

Hole Diameter
Between 0.785 inches and 0.800 inches
Outside Diameter
1.200 inches
Tapered Key Minor Width
0.120 inches
Overall Distance Including Keys
Between 1.470 inches and 1.570 inches
Material Thickness
0.063 inches
Wire Hole Diameter
Between 0.070 inches and 0.075 inches
Material
Aluminum alloy 2024
Material Specification
Qq-a-250/4, t4 federal specification single material response
Surface Treatment
Chromate
Surface Treatment Specification
Mil-c-5541, type 2, cl 1a military specification single treatment response
NSN
5310-01-184-3786
Part Number
4M248-1
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 4M248-1 NSN 5310-01-184-3786

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
194120
UFC:
95100
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7616108000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum

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