Model: 56257

Tube To Boss Straight Adapter

Special Features:

With mounting flange, 2.000 in.W, 4 mounting holes, equally spaced 1.500 in.Cc to cc, slotted, 0.062 in.Min.0.072 in.Max, 0.031 in.Min.0.036 in.Max diameter of mounting holes

Properties:

Thread Class
3a 2nd end
Thread Class
3a 1st end
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flared (tube) 1st end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded external tube 1st end
Thread Size
0.875 inches 1st end
Thread Size
0.875 inches 2nd end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.625 inches 1st end
Nominallength
1.950 inches
Material
Stainless steel
Material Specification
Qq-s-763, class 416 federal specification single material response
Surface Treatment
Passivate inside
Surface Treatment
Passivate outside
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 2nd end
NSN
4730-00-678-9460
Part Number
56257
Description
Adapter,straight,tube To Boss
CAGE
08093

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. 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 tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

Part 56257 NSN 4730-00-678-9460

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22675
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
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:
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: 7307290000
  • SITC: 67956
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Stainless steel tube or pipe fittings nesoi

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