Model: NK924-4

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with metallic insert
Nut Style
Hexagon
Nut Height
0.250 inches
Width Across Flats
Between 0.684 inches and 0.691 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
20
Thread Size
0.438 inches
Bearing Surface Type
Chamfered
Material
Plastic polyamide locking insert
Material
Steel comp 1137 nut or steel comp 1141 nut or steel comp 4130 nut or steel comp 4140 nut
Material Specification
Astm a108 assn standard 1st material response nut or astm a108 assn standard 2nd material response nut or mil-s-6758 military specification 3rd material response nut or mil-s-5626 military specification 4th material response nut
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification single treatment response
NSN
5310-01-168-1778
Part Number
NK924-4
Description
Nut,self-locking,hexagon
CAGE
26233

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 NK924-4 NSN 5310-01-168-1778

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
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:
A
ESD:
ESD:
MMAC:
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:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
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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