Model: LH8639-82

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.373 inches
Counterbore Diameter
0.307 inches nut and 0.317 inches nut
Overall Height
Between 0.301 inches and 0.316 inches
Nut Style
Hexagon
Washer Thickness
Between 0.027 inches and 0.037 inches
Nut Counterbore Depth
0.017 inches nut and 0.023 inches nut
Width Across Flats
0.221 inches
Thread Series
Unc
Thready Qty Per Inch (tpi)
32
Thread Size
0.164 inches
Countersink Angle
90.0 degrees nut
Material
Steel comp 8740
Material Specification
66 federal standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
NSN
5310-00-484-4125
Part Number
LH8639-82
Description
Nut,self-locking,extended Washer
CAGE
019L2

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part LH8639-82 NSN 5310-00-484-4125

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29730
FIIG:
A021A0
Concept No.:
1
App. Key:
BT
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:
A
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: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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