Model: ST3M426C3M

Extended Washer Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.380 inches
Counterbore Diameter
0.211 inches nut and 0.221 inches nut
Lubrication
Dry film lubricant
Overall Height
Between 0.223 inches and 0.243 inches
Nut Style
Double hexagon
Washer Thickness
Between 0.067 inches and 0.077 inches
Nut Counterbore Depth
0.067 inches nut and 0.077 inches nut
End Application
W/s: aircraft, harrier av-8b; aircraft, eagle f-15; engine, aircraft, f100-pw-100 )f-15a/b/c/d); f/a-18e/f hornet aircraft; aircraft, hornet f/a-18
Width Across Flats
Between 0.213 inches and 0.221 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
32
Thread Size
0.190 inches
Countersink Angle
45.0 degrees nut
Material
Iron alloy 660
Material Specification
Ams 5735 assn standard single material response or ams 5737 assn standard single material response
Specification Data
76301-st3-426 manufacturers standard
NSN
5310-00-279-9457
Part Number
ST3M426C3M
Description
Nut,self-locking,extended Washer
CAGE
76301

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part ST3M426C3M NSN 5310-00-279-9457

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29729
FIIG:
A021A0
Concept No.:
1
App. Key:
BS
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:
SX
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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