Model: 8724978

Extended Washer Self-locking Nut

Special Features:

125 microinches rms all over except 32 microinches rms on washer face

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

Between 0.990 inches and 1.010 inches

Counterbore Diameter

0.615 inches nut and 0.635 inches nut

Overall Height

Between 0.680 inches and 0.700 inches

Nut Style

Hexagon

Washer Thickness

Between 0.110 inches and 0.130 inches

Nut Counterbore Depth

0.010 inches nut and 0.030 inches nut

Width Across Flats

Between 0.865 inches and 0.875 inches

Thread Series

Unf

Features Provided

Casehardened

Thready Qty Per Inch (tpi)

Hardness Rating

Between 26.0 rockwell c and 32.0 rockwell c

Thread Size

0.625 inches

Material

Steel comp 4140 or steel comp 8640 or steel comp 8740

Material Specification

Qq-s-624 federal specification 1st material response or qq-s-624 federal specification 2nd material response or qq-s-624 federal specification 3rd material response

NSN

5310-00-655-9937

Part Number

8724978

Description

Nut,self-locking,extended Washer

CAGE

19207

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 8724978 NSN 5310-00-655-9937

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093483

UFC:

48950

LTL:

60.0

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