Model: 8724978

Extended Washer Self-locking Nut

Special Features:

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

Properties:

Thread Class
3b
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)
18
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.:
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093483
UFC:
48950
LTL:
60.0
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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