Model: 21C1705-18

Boss Reducer

Properties:

Thread Class
3a all ends
Reducer Type
Concentric
Maximum Operating Temp
71.0 degrees celsius single response
Connection Style
Flared w/ gasket seal (boss) all ends
Connection Type
Threaded external boss all ends
Thready Qty Per Inch (tpi)
12 all ends
Maximum Operating Pressure
1500.0 pounds per square inch single response
Thread Size
1.312 inches 2nd end
Thread Size
1.625 inches 1st end
Nominallength
2.250 inches
Material
Steel comp 304 or steel comp 316
Material Specification
66, aisi 304/sae 30304 federal standard 1st material response or 66, aisi 326/sae 30316 federal standard 2nd material response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-f-14072, e300, type 2 military specification single treatment response outside
Surface Treatment Specification
Mil-s-5002 military specification 1st treatment response inside and qq-p-35 federal specification 2nd treatment response inside
Thread Series Designator
Un all ends
Specification Data
88044-an919 government standard
NSN
4730-00-802-2234
Part Number
21C1705-18
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 21C1705-18 NSN 4730-00-802-2234

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
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:
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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