Model: 4939-028

Pipe To Boss Straight Adapter

Properties:

Thread Class
2b 2nd end
Connection Style
Gasket seal (boss) 2nd end
Thread Size
0.250 inches 1st end and 0.750 inches 1st end
Thread Size
0.500 inches 2nd end
Nominallength
1.500 inches
Material
Steel
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
Thread Series Designator
Npt 1st end and unf 1st end
Thread Series Designator
Unf 2nd end
Furnished Items And Quantity
1 preformed packing
NSN
4730-00-953-0471
Part Number
4939-028
Description
Adapter,straight,pipe To Boss
CAGE
82386

An adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a pipe or pipe fitting to a boss or boss fitting in a straight line on items such as tanks, housing, valve fittings, or the like. See also adapter bushing and coupling, pipe.

Part 4939-028 NSN 4730-00-953-0471

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22674
FIIG:
A080B0
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

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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