Model: MS21900-4

Boss Nipple

Properties:

Thread Class
3a all ends
Maximum Operating Temp
-65.0 degrees fahrenheit 2nd response
Maximum Operating Temp
275.0 degrees fahrenheit 1st response
End Application
26f aircraft, f-16
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flared w/ gasket seal (boss) 1st end
Connection Type
Threaded external boss all ends
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.438 inches all ends
Nominallength
1.188 inches
Material
Steel comp 1137
Material Specification
Qq-s-637 federal specification single material response
Media For Which Designed
Hydraulic fluid single response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, class 2 military specification single treatment response
Style Designator
Flared and flareless w/ center wrenching facility
Thread Series Designator
Unjf all ends
Specification Data
96906-ms21900 government standard
NSN
4730-00-541-1579
Part Number
MS21900-4
Description
Nipple,boss
CAGE
96906

A straight, one-piece fitting used to join two bosses or boss fittings. Both ends are the same size and have external machine threads (straignt threads other than pipe or hose series). It is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. The center section may be suitably shaped to accommodate a wrench.

Part MS21900-4 NSN 4730-00-541-1579

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
26952
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:
--
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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