Model: 66-11931-1

Recessed Washer

Properties:

Hole Diameter
Between 1.140 inches and 1.160 inches
Outside Diameter
Between 1.680 inches and 1.700 inches
Recess Diameter
Between 1.330 inches and 1.350 inches
Material Thickness
0.125 inches
Recess Angle
90.0 degrees
Heat Treatment
Normalized
Material
Steel comp 4340 or steel comp 4130
Material Specification
Mil-s-5000 military specification 1st material response or mil-s-6758 military specification 2nd material response or milt-6736 military specification 3rd material response
Surface Treatment
Cadmium or zinc
Surface Treatment Specification
Qq-p-416, type 1, class 2 federal specification 1st treatment response or qq-z-325, type 2 federal specification 2nd treatment response
Style Designator
15 recessed
Style Designator
Recessed
NSN
5310-00-279-5530
Part Number
66-11931-1
Description
Washer,recessed
CAGE
82918

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

Part 66-11931-1 NSN 5310-00-279-5530

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15933
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:
SX
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:
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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