Model: S1620-64175-4

Recessed Washer

Properties:

Hole Diameter
Between 0.375 inches and 0.380 inches
Outside Diameter
0.625 inches
Overall Height
0.188 inches
Recess Depth
0.125 inches
Material Thickness
Between 0.131 inches and 0.136 inches
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
Between 26.0 rockwell c and 33.0 rockwell c
Surface Finish
100.0 microinches all surfaces
Material
Stainless steel
Material Specification
Mil-s-18732 military specification single material response
Surface Treatment
Passivate
Surface Treatment Specification
Ss-8435, fscm 78286 mfr ref single treatment response
Style Designator
Recessed
NSN
5310-00-253-7651
Part Number
S1620-64175-4
Description
Washer,recessed
CAGE
78286

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 S1620-64175-4 NSN 5310-00-253-7651

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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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