Model: 78238-524

Dou Castellated Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Castellated, double hexagon
Nut Height
0.276 inches
Width Across Flats
Between 0.492 inches and 0.502 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
24
Hardness Rating
Between 40.0 rockwell c and 44.0 rockwell c
Thread Size
0.312 inches
Thread Pitch In Millimeters
1.058
Bearing Surface Type
Chamfered
Material
Steel comp h11
Surface Treatment
Cadmium
Surface Treatment Specification
Mil-c-8837, ty ii, cl 2 military specification single treatment response
NSN
5310-01-064-6566
Part Number
78238-524
Description
Nut,self-locking,castellated,dou
CAGE
56878

A nut having 12 drive points, 24 sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe" feature in critical applications.

Part 78238-524 NSN 5310-01-064-6566

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
35607
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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:
BF
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
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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