Model: HY-521-8

Clinch Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Pilot Diameter
Between 0.220 inches and 0.224 inches
Pilot Length
Between 0.159 inches and 0.171 inches
Counterbore Diameter
0.165 inches nut
Nut Style
Clinch
Nut Height
Between 0.347 inches and 0.359 inches
Nut Counterbore Depth
0.165 inches nut
Width Across Flats
0.313 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unc
Thready Qty Per Inch (tpi)
32
Thread Size
0.138 inches
Material
Aluminum alloy 2017 nut
Material
Plastic polyhexamethylene amide locking insert or plastic polycaprolactam locking insert
Material Specification
Ams4118 assn standard 1st material response nut
Material Specification
Mil-m-20693 military specification 2nd material response locking insert
Surface Treatment
Anodize except insert
Surface Treatment Specification
Mil-a-8625 military specification single treatment response except insert
NSN
5310-00-753-7104
Part Number
HY-521-8
Description
Nut,self-locking,clinch
CAGE
02KE8

A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole. An integral feature is incorporated for locking.

Part HY-521-8 NSN 5310-00-753-7104

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15892
FIIG:
A021A0
Concept No.:
1
App. Key:
BN
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

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: 7616995095
  • SITC: 69979
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Articles of aluminum nesoi

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