Model: 2640-330

Union Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Shoulder Width
0.281 inches
Nut Style
Hexagon
Nut Height
1.656 inches
Width Across Flats
4.250 inches
Smallest Inside Diameter
1.406 inches
Thread Series
Unf
Shoulder Step Width
0.500 inches
Thready Qty Per Inch (tpi)
12
Thread Size
3.250 inches
Material
Nickel
Material Specification
Qq-n-281 federal specification all material responses
NSN
4730-01-244-2260
Part Number
2640-330
Description
Nut,union
CAGE
96169

An internally threaded nut which has an internal seat or shoulder designed to engage the nut retaining flange of a union tailpiece. The threaded portion is used to engage the thread piece of a union, union elbor or the like. Excludes nut (1), tube coupling.

Part 2640-330 NSN 4730-01-244-2260

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
19964
FIIG:
A021A0
Concept No.:
1
App. Key:
DB
Cond. Code:
2
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:
139820
UFC:
70220
LTL:
85.0
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7507200000
  • SITC: 68322
  • End Use: Finished metal shapes
  • NAICS: 332919
  • USDA: 1

Freight Class: Tube or pipe fittings of nickel

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