Model: 7M637NB-D6-4

Tube Reducer

Properties:

Thread Class
3a 1st end
Reducer Type
Concentric
Connection Style
Flared (tube) 1st end
Connection Style
Plain (tube) 2nd end
Connection Type
Threaded external tube 1st end
Connection Type
Unthreaded external tube 2nd end
Thread Size
0.438 inches 1st end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Outside Diameter Tube Accommodated
0.375 inches 2nd end
Reduced Passage Inside Diameter
0.172 inches 1st end
Nominallength
0.969 inches
Material
Aluminum alloy
Material Specification
Qq-a-225/4 federal specification 1st material response or qq-a-225/6 federal specification 2nd material response
Surface Treatment
Aluminum
Surface Treatment Specification
Mil-c-83488, cl 3, type 2 military specification single treatment response
Thread Series Designator
Unf 1st end
NSN
4730-01-159-8956
Part Number
7M637NB-D6-4
Description
Reducer,tube
CAGE
06581

A straight tube fitting having a different size connection on each end. It is designed to join two tubes of different sizes. Excludes bushing (as modified).

Part 7M637NB-D6-4 NSN 4730-01-159-8956

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
08506
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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
051400
UFC:
29700
LTL:
77.5
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7609000000
  • SITC: 68427
  • End Use: Finished metal shapes
  • NAICS: 332919
  • USDA: 1

Freight Class: Aluminum tube or pipe fittings (couplings,elbows sleeves)

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