Model: 2670-57 ITEM 93

Reducing Tube Coupling Nut

Special Features:

For navy nuclear propulsion plant products only

Properties:

Thread Class
2b
Thread Direction
Right-hand
Fabrication Method
Machined
Nut Style
Tube coupling
Nut Height
0.594 inches
Width Across Flats
0.750 inches
Smallest Inside Diameter
0.188 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.438 inches
Tube Outside Diameter
0.250 inches
Seat Angle
45.0 degrees
Criticality Code Justification
Zzzy
Material
Copper alloy
Specification Data
81343-j513 professional/industrial association standard
Nondefinitive Specification/std Data
36a figure
Reference Number Differentiating Characteristics
As differentiated by free from mercury contamination
NSN
4730-01-176-6732
Part Number
2670-57 ITEM 93
Description
Nut,tube Coupling,reducing
CAGE
43689

A tube coupling nut with the shank end accommodating a smaller tube size than is accommodated by the tube fitting which connects to the threaded end.

Part 2670-57 ITEM 93 NSN 4730-01-176-6732

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03860
FIIG:
A021A0
Concept No.:
1
App. Key:
CX
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:
A
ESD:
ESD:
MMAC:
CRITL:
Y

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:
A
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093460
UFC:
48930
LTL:
70.0
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7415290000
  • SITC: 69432
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Copper screws, nuts, bolts, rivets, and other fasteners not threaded

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