Model: R398P4B

Extended Washer Self-locking Nut

Special Features:

Theat treatment-solution treated at 1800 deg.F plus/minus 50 degrees for 1 to 4 hrs and oil quench or air cool.Ageharden at 1300 deg-1400 degf for 16 hr.And air cool; hardness-esna rc27-40, kaynar rc32-48, sps rc35-42, voi-shan rc 32-44

Properties:

Thread Class
3b
Thread Direction
Right-hand
Washer Outside Diameter
0.598 inches
Overall Height
0.458 inches
Nut Style
Double hexagon
Width Across Flats
Between 0.430 inches and 0.439 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
24
Thread Size
0.375 inches
Material
Iron alloy 660
Material Specification
Ams5735 assn standard single material response
NSN
5310-01-262-6314
Part Number
R398P4B
Description
Nut,self-locking,extended Washer
CAGE

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 R398P4B NSN 5310-01-262-6314

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:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
095760
UFC:
50130
LTL:
70.0
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
Z
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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