Model: MIL-F-18866

Tube Coupling Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Fabrication Method
Forged
Nut Style
Tube coupling
Nut Height
0.719 inches
Width Across Flats
0.625 inches
Length To Shoulder
0.560 inches
Smallest Inside Diameter
Between 0.318 inches and 0.321 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.500 inches
Tube Outside Diameter
0.313 inches
Seat Angle
45.00 degrees
Material
Steel comp 12l14
Material Specification
Fed-std-66 federal standard single material response
Surface Treatment
Cadmium or zinc
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification single treatment response or qq-z-325, type 2, class 3 federal specification single treatment response
Specification Data
96906-ms51823 government standard
NSN
4730-00-278-8823
Part Number
MIL-F-18866
Description
Nut,tube Coupling
CAGE
81349

An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes nut (1), tube coupling, reducing; and nut (1), union.

Part MIL-F-18866 NSN 4730-00-278-8823

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03859
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:
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:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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