Model: 28863

Boss Reducer

Properties:

Thread Class
3a 2nd end
Thread Class
3a 1st end
Reducer Type
Concentric
Connection Style
External seat for gasket seal (boss) 1st end
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Type
Threaded external boss 1st end
Connection Type
Threaded external boss 2nd end
Thread Size
0.750 inches 2nd end
Reduced Passage Inside Diameter
0.251 inches 2nd end
Nominallength
1.590 inches
Material
Steel
Surface Treatment
Anodize inside
Surface Treatment
Anodize outside
Surface Treatment Specification
Mil-a-8625, ty2, cl 1 military specification single treatment response inside
Surface Treatment Specification
Mil-a-8625, ty2, cl 1 military specification single treatment response outside
Thread Series Designator
Unf 1st end
Thread Series Designator
Unf 2nd end
NSN
4730-00-361-2403
Part Number
28863
Description
Reducer,boss
CAGE
99643

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 28863 NSN 4730-00-361-2403

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:
CRITL:
X

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: 7307992000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of iron or nonalloy steel

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