Model: AS4875

Boss Reducer

Properties:

Thread Class
3a 2nd end
Thread Class
3b 1st end
Reducer Type
Concentric
End Application
Used on sikorsky cargo transport helicopter, ch-54a snd ch-54b
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
Thread Size
0.438 inches 1st end
Thread Size
0.562 inches 2nd end
Nominallength
1.109 inches
Material
Steel comp 304
Material Specification
66 federal standard single material response
Surface Treatment
Passivate inside
Surface Treatment
Passivate outside
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 2nd end
NSN
4730-00-555-2585
Part Number
AS4875
Description
Reducer,boss
CAGE
81343

A straight fitting having a boss connection of a different size at each end. Both connections have external or internal 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. Excludes bushing (as modified).

Part AS4875 NSN 4730-00-555-2585

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:
4.0 X 0.0 X 0.0
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:
052190
UFC:
30000
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

End Items End applications NSN 4730-00-555-2585 is a component of

  • Ch-54a Snd Ch-54b Used On Sikorsky Cargo Transport Helicopter
  • B-52 Aircraft Support Equipment
  • Ec-135h/k/p) Aircraft Tf33-pw-102 (c-135e Engine
  • B-52h) Aircraft Tf33-p-3/5/9 (c/ec-135 Engine
  • Harpoon (agm-84) All-weather Anti-ship Missile
  • Tf-33-p-7 (c-141a/b) Aircraft Engine
  • Lamps Mk Iii Helicopter Landing System
  • Mh-53e Helicopter
  • Ah-1w Advance Attack Helicopter
  • Sof / Hh-53j/m Pave Low Helicopter
  • An/aqs-14a Laser Line Scan
  • 010038734
  • Aircraft Engine Build-up Parts Kit
  • 007896243
  • Shock Isolator
  • 000698953
  • Guided Missile System Test Kit
  • 009635882
  • Checking Filling Un
  • 010101296
  • Aircraft Engine Build-up Parts Kit

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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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