Model: RDB20

Extended Washer Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

1.719 inches

Overall Height

0.750 inches

Nut Style

Hexagon

Washer Thickness

0.188 inches

Width Across Flats

1.250 inches

Thread Series

Unf

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Hardness Rating

Between 55.0 rockwell c and 60.0 rockwell c

Thread Size

0.875 inches

Material

Steel comp 1020

Material Specification

Sae assn standard single material response

NSN

5310-00-264-0479

Part Number

RDB20

Description

Nut,self-locking,extended Washer

CAGE

02978

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 RDB20 NSN 5310-00-264-0479

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