Model: MIL-F-5509

Boss Cross

Special Features:

Weapon system essential

Properties:

Thread Class
3b all ends
End Application
Aircraft, galaxy c-5
Connection Style
Gasket seal (boss) all ends
Leg Length
1.531 inches all ends
Connection Type
Threaded internal boss all ends
Thready Qty Per Inch (tpi)
12 all ends
Thread Size
1.312 inches all ends
Criticality Code Justification
Feat
Material
Steel comp 1137 or steel comp 4130 or steel comp 4140
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response inside
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response outside
Thread Series Designator
Unj all ends
Specification Data
81343-as5193 professional/industrial association standard and 81343-as4875 professional/industrial association standard
NSN
4730-00-405-9738
Part Number
MIL-F-5509
Description
Cross,boss
CAGE
81349

A fitting having four branches in the same plane whose axes form right angles. The boss connections for items such as tanks, housings, valve fittings, and the like, have internal or external machine threads (straight threads other than pipe or hose series) and are designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It may have side inlet(s). Excludes cross, tube.

Part MIL-F-5509 NSN 4730-00-405-9738

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22702
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:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.7000lbs
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: 7307994000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of alloy steel not stainless

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