Model: LH6521-048

Double Hexagon Self-locking Nut
Description:

3b thread class, right-hand , prevailing torque all metal design locking feature, double hexagon nut style, 0.189 inches nut height.

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Double hexagon
Nut Height
Between 0.189 inches and 0.199 inches
Width Across Flats
Between 0.431 inches and 0.439 inches
Tempurature Rating
450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Hardness Rating
Between 39.0 rockwell c and 45.0 rockwell c
Thread Size
0.250 inches
Bearing Surface Type
Chamfered or washer faced
Material
Steel comp 8740
Material Specification
Ams6322 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification single treatment response
NSN
5310-00-008-3696
Part Number
LH6521-048
Description
Nut,self-locking,double Hexagon
CAGE
019L2

A nut having 12 drive points and 24 sides. The bearing surface may be washer faced. An integral locking feature is incorporated in the design of the head or in the threads.

Part LH6521-048 NSN 5310-00-008-3696

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05276
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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:
0.1000lbs
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:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

End Items End applications NSN 5310-00-008-3696 is a component of

  • Rotary Wing Blade
  • 011138188
  • Ch 47 (rotary Wing Aircraft)
  • Aircraft Black Hawk (mh-60k Special Operations Aircraft)
  • H-60 Seahawk Helicopter
  • Eh-60a Electronic Countermeasures Helicopter
  • Hh-60l Medivac
  • Hh-60j Uscg Search And Rescue Helicopter
  • Hh-60h Search And Rescue Helicopter
  • Sh-60f Carrier Based Asw Helicopter
  • Sof / Hh-53j/m Pave Low Helicopter
  • Mh-53e Helicopter
  • Iroquois Hh/uh-1 Helicopter

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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