Model: M287/3-20-0120

Waveguide Assembly

Properties:

Cross Sectional Shape
Internal, rectangular external, rectangular
Thread Class
2a first flange all connection facilities
Thread Direction
Right-hand first flange all connection facilities
Bend Angle In Deg
6.9 single bend e-plane
Tubing Wall Construction Style
Seamless single tubing segment
Tubing Twist Type
Twistable single tubing segment
Tubing Twist Angle In Deg
14.5 single tubing segment
Flange Quantity
2
Flange Inside Width
1.867 inches first flange and 1.877 inches first flange
Flange Inside Width
2.003 inches second flange and 2.009 inches second flange
Flange Inside Height
0.867 inches first flange and 0.877 inches first flange
Flange Inside Height
1.003 inches second flange and 1.009 inches second flange
Flange Outside Diameter
3.610 inches first flange and 3.640 inches first flange
Flange Outside Diameter
3.610 inches second flange and 3.640 inches second flange
Flange Depth
0.360 inches second flange and 0.390 inches second flange
Flange Depth
0.923 inches first flange and 0.953 inches first flange
Flange Connecting Hole Diameter
0.195 inches second flange all connection facilities and 0.199 inches second flange all connection facilities
Voltage Standing Wave Ratio
1.08
Insertion Loss In Decibels
0.05
Maximum Operating Pressure
30.0 pounds per square inch gage
Waveguide Outside Width
2.000 inches
Thread Size
0.190 inches first flange all connection facilities
Waveguide Inside Width
1.872 inches
Waveguide Inside Height
0.872 inches
Waveguide Outside Height
1.000 inches
Flange Connecting Facility And Quantity
8 threaded hole first flange all connection facilities
Flange Connecting Facility And Quantity
8 unthreaded hole second flange all connection facilities
Flange Style
Choke type first flange
Flange Style
Cover type second flange
Waveguide Length
120.000 inches
Flexibility
Flexible single tubing segment
Material
Aluminum alloy single tubing segment and flange
Style Designator
Straight type
Thread Series Designator
Unf first flange all connection facilities
Specification Data
81349-mil-w-287/3 government specification
Fsc Application Data
Antennas, waveguides, and related equip.
NSN
5985-01-309-6857
Part Number
M287/3-20-0120
Description
Waveguide Assembly
CAGE
81349

An item consisting of one or more definite lengths of straight or formed, flexible or rigid, prefabricated hollow tubing of conductive material. The tubing has a predetermined cross section and is designed to guide or conduct high frequency electromagnetic energy through its interior. One or more ends are terminated. May include common mounting of a switch, wave guide, a dummy load, electrical and other components such as waveguide section, cable terminal chamber and the like. Excludes coupler, rotary, radio frequency; coupler, directional; adapter, waveguide; and tuner, waveguide.

Part M287/3-20-0120 NSN 5985-01-309-6857

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00305
FIIG:
A073A0
Concept No.:
App. Key:
B
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:
P
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:
--
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:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063520
UFC:
49770
LTL:
RATING VARIABLE
LCL:
--
WCC:
723
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8529109000
  • SITC: 76493
  • End Use: Telecommunications equipment
  • NAICS: 334220
  • USDA: 1

Freight Class: Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi

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