Model: RMLH6521-108

Double Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Any acceptable
Lubrication
Dry film lubricant
Nut Style
Double hexagon
Nut Height
Between 0.574 inches and 0.584 inches
Width Across Flats
Between 0.930 inches and 0.940 inches
Tempurature Rating
450.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
18
Hardness Rating
Between 39.0 rockwell c and 45.0 rockwell c
Thread Size
0.625 inches
Bearing Surface Type
Chamfered
Material
Steel comp 8740
Material Specification
Ams 6322 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification single treatment response
NSN
5310-00-159-6445
Part Number
RMLH6521-108
Description
Nut,self-locking,double Hexagon
CAGE
82156

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 RMLH6521-108 NSN 5310-00-159-6445

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
B

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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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