Model: 1803-040

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Height
0.323 inches
Width Across Flats
Between 0.428 inches and 0.440 inches
Tempurature Rating
Not rated
Thread Series
Unc
Thready Qty Per Inch (tpi)
20
Hardness Rating
Not rated
Thread Size
0.250 inches
Bearing Surface Type
Any acceptable
Material
Steel comp 303 or steel comp 303se or steel comp 303 plus x
Material
Steel comp 303 or steel comp 303se or steel comp 303 plus x
Material Specification
Ams 5640 assn standard all material responses
Precious Material
Silver
Surface Treatment
Silver
NSN
5310-00-550-4835
Part Number
1803-040
Description
Nut,self-locking,hexagon
CAGE
019L2

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 1803-040 NSN 5310-00-550-4835

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:
S
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
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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