Model: MS21915D16-10

Boss Reducer

Properties:

Thread Class
3a 2nd end
Thread Class
3b 1st end
Reducer Type
Concentric
Maximum Operating Temp
225.0 degrees fahrenheit single response
End Application
Used on sikorsky model ch-54a and ch-54b cargo transport helicopter
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Gasket seal (boss) 1st end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded internal boss 1st end
Thready Qty Per Inch (tpi)
12 1st end
Thread Size
1.312 inches 1st end
Thread Size
0.875 inches 2nd end
Nominallength
1.984 inches
Material
Aluminum alloy 2024 or aluminum alloy 2014
Material Specification
Qq-a-225/6/t6 federal specification 1st material response or qq-a-225/4, t6 federal specification 2nd material response
Media For Which Designed
Hydraulic fluid 1st response
Media For Which Designed
Oxygen, gaseous 2nd response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2, cl 2 military specification single treatment response
Thread Series Designator
Unj 1st end
Thread Series Designator
Unjf 2nd end
Specification Data
96906-ms21915 government standard
NSN
4730-00-585-7771
Part Number
MS21915D16-10
Description
Reducer,boss
CAGE

Part MS21915D16-10 NSN 4730-00-585-7771

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
23541
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:
0.5000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
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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