Model: LH8639-82

Extended Washer Self-locking Nut

Properties:

Thread Class

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)

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.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

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