Model: 55LH7644-126

Hexagon Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Lubrication

Soluble lubricant

Nut Style

Hexagon

Nut Height

0.421 inches

Width Across Flats

Between 1.052 inches and 1.062 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.7500 inches

Bearing Surface Type

Chamfered or washer faced

Material

Steel comp 4130 or steel comp 4340 or steel comp 8740 or steel comp 4140

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, ty ii, cl 3 federal specification single treatment response

NSN

5310-01-443-9710

Part Number

55LH7644-126

Description

Nut,self-locking,hexagon

CAGE

019L2

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 55LH7644-126 NSN 5310-01-443-9710

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05277

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:

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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