Model: WWP521

Pipe Coupling

Special Features:

2nd end thd directionl-h

Properties:

Pipe Size Accommodated
0.750 inches 1st end
Pipe Size Accommodated
0.750 inches 2nd end
Maximum Operating Temp
260.0 degrees celsius 1st response
Maximum Operating Temp
65.6 degrees celsius 2nd response
Connection Style
Plain (pipe) 1st end
Connection Style
Plain (pipe) 2nd end
Connection Type
Threaded internal pipe 1st end
Connection Type
Threaded internal pipe 2nd end
Maximum Operating Pressure
150.0 pounds per square inch 1st response
Maximum Operating Pressure
300.0 pounds per square inch 2nd response
Thread Size
0.750 inches 1st end
Thread Size
0.750 inches 2nd end
Nominallength
1.520 inches
Material
Iron
Material Specification
Astm a197 assn standard single material response
Media For Which Designed
Steam 1st response
Media For Which Designed
Water-oil-gas 2nd response
Surface Treatment
Zinc
Style Designator
Plain w/ flated sides
Thread Series Designator
Npt 2nd end
Thread Series Designator
Npt 1st end
Specification Data
81349-ww-p-521 government specification
Nondefinitive Specification/std Data
2 type
NSN
4730-00-289-1224
Part Number
WWP521
Description
Coupling,pipe
CAGE
81348

A straight fitting 12 inches (304 mm) long or under having the same or different type pipe connection of the same size on both ends. It is designed to join a pipe or pipe fitting to another pipe or pipe fitting. Excludes fittings with threaded external connections on both ends. See also nipple, pipe.

Part WWP521 NSN 4730-00-289-1224

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06076
FIIG:
A080B0
Concept No.:
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
052190
UFC:
30000
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7307992000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of iron or nonalloy steel

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