Model: 2688W653

Boss Reducer

Properties:

Thread Class
3a all ends
Reducer Type
Concentric
Connection Style
Flared w/ gasket seal (boss) all ends
Connection Type
Threaded external boss all ends
Thready Qty Per Inch (tpi)
12 1st end
Thread Size
1.312 inches 1st end
Thread Size
0.875 inches 2nd end
Nominallength
2.047 inches
Material
Aluminum alloy
Surface Treatment Specification
Mil-c-5541 class 3 military specification single treatment response
Thread Series Designator
Unf 2nd end
Thread Series Designator
Unj 1st end
NSN
4730-01-391-0792
Part Number
2688W653
Description
Reducer,boss
CAGE

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 2688W653 NSN 4730-01-391-0792

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:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051420
UFC:
29090
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7609000000
  • SITC: 68427
  • End Use: Finished metal shapes
  • NAICS: 332919
  • USDA: 1

Freight Class: Aluminum tube or pipe fittings (couplings,elbows sleeves)

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