Model: LH6521-064

Double Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Double hexagon
Nut Height
Between 0.303 inches and 0.313 inches
Width Across Flats
Between 0.553 inches and 0.564 inches
Tempurature Rating
500.0 degrees fahrenheit
Thread Series
Unf
Thready Qty Per Inch (tpi)
24
Hardness Rating
Between 38.0 rockwell c and 45.0 rockwell c
Thread Size
0.375 inches
Bearing Surface Type
Chamfered
Material
Steel comp 8630 or steel comp 4037 or steel comp 601
Material Specification
Ams 6280 assn standard 1st material response or ams 6300 assn standard 2nd material response or ams 6304 assn standard 3rd material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, cl 1 federal specification single treatment response
NSN
5310-00-055-2350
Part Number
LH6521-064
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 LH6521-064 NSN 5310-00-055-2350

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

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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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