Model: 51H-20

Pipe Flange

Properties:

Recess Diameter
2.031 inches
Recess Depth
0.295 inches
Pipe Size For Which Designed
1.250 inches
Center To Center Distance Between Bolt Holes Along Length
2.312 inches
Outside Edge To Bolt Hole Center Distance Along Width
0.594 inches
Bolt Hole Quantity
4
Flange Length
3.125 inches
Flange Width
2.780 inches
Bolt Hole Diameter
0.469 inches
Flange Section Style
Raised faced, dished
Face Seating Surface Condition
Machined
Features Provided
O ring
Maximum Operating Pressure And Media For Which Designed
4000.0 pounds per square inch fuel/oil, hydrocarbon
Maximum Operating Tempurature And Media For Which Designed
250.0 degrees fahrenheit fuel/oil, hydrocarbon
Material
Steel
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, cl 3, type 2 federal specification single treatment response
Style Designator
Bolt hole connector plate
NSN
4730-00-989-8910
Part Number
51H-20
Description
Flange,pipe
CAGE
98441

An item solid or split into halves, having a threaded or unthreaded hole for the purpose of connecting or retaining a pipe, tube, or hose fitting. The face of the flange may be smooth, grooved, or serrated and may be drilled for connecting bolts or studs. If the item is unthreaded, the pipe or tube may be retained by welding, brazing, compression, or the like. Excludes flange, pipe, blind; ferrule, grooved clamp coupling; and adapter (as modified).

Part 51H-20 NSN 4730-00-989-8910

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03798
FIIG:
A23300
Concept No.:
App. Key:
B
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:
0.3000lbs
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: 7307912000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Flanges of iron or nonalloy steel

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