Model: AN355-4

Hexagon Castellated Plain Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Nut Style
Castellated, hexagon
Nut Height
0.281 inches
Width Across Flats
Between 0.428 inches and 0.440 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Hardness Rating
Between 68.0 rockwell b and 32.0 rockwell c
Thread Size
0.250 inches
Countersink Angle
110.0 degrees nut
Bearing Surface Type
Washer faced
Material
Steel
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
NSN
5310-00-176-8196
Part Number
AN355-4
Description
Nut,plain,castellated,hexagon
CAGE
88044

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.

Part AN355-4 NSN 5310-00-176-8196

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01854
FIIG:
A021A0
Concept No.:
1
App. Key:
AG
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

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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