Model: MM891C5A

Recessed Washer

Properties:

Hole Diameter
Between 0.314 inches and 0.318 inches
Outside Diameter
Between 0.575 inches and 0.585 inches
Recess Diameter
Between 0.386 inches and 0.396 inches
Material Thickness
Between 0.057 inches and 0.069 inches
Recess Angle
90.0 degrees
Material
Nickel alloy 718
Material Specification
Ams 5596 assn standard single material response or ams 5597 assn standard single material response or ams 5662 assn standard single material response
Surface Treatment
Aluminum alloy
Surface Treatment Specification
Mil-c-83488, type 2, cl 3 military specification single treatment response
Style Designator
15 recessed
NSN
5310-01-349-9650
Part Number
MM891C5A
Description
Washer,recessed
CAGE
58009

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 MM891C5A NSN 5310-01-349-9650

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:
A
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: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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