Model: 4251

Hexagon Castellated Plain Nut
Description:

2b thread class, right-hand , castellated, hexagon nut style, 0.444 inches nut height, 0.612 inches width across flats, unf thread series.

Properties:

Thread Class
2b
Thread Direction
Right-hand
Nut Style
Castellated, hexagon
Nut Height
Between 0.444 inches and 0.463 inches
Width Across Flats
Between 0.612 inches and 0.625 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.438 inches
Bearing Surface Type
Chamfered or washer faced
Material
Steel
Nondefinitive Specification/std Data
A type
NSN
5310-00-010-3046
Part Number
4251
Description
Nut,plain,castellated,hexagon
CAGE
23382

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 4251 NSN 5310-00-010-3046

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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