Model: 5257-5

Flange To Boss Straight Adapter

Properties:

Thread Class
3a 2nd end
Bolt Hole Quantity
2 1st end
Width
0.875 inches 1st end
Length
1.750 inches 1st end
Connection Type
Flange 1st end
Connection Type
Threaded external boss 2nd end
Thread Size
0.438 inches 2nd end
Union Joint Location
Second end
Thickness
0.187 inches 1st end
Bolt Hole Diameter
0.193 inches 1st end
Bolt Circle Diameter
1.250 inches 1st end
Material
Steel
Surface Treatment
Cadmium outside
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response outside
Thread Series Designator
Unf 2nd end
NSN
4730-00-083-5908
Part Number
5257-5
Description
Adapter,straight,flange To Boss
CAGE
02121

An adapter having a flange connection on one end designed to connect with another flange connection or a compression type mounting pad. 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 flange or flange fitting to boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like.

Part 5257-5 NSN 4730-00-083-5908

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29653
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: 7307912000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Flanges of iron or nonalloy steel

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