Model: HW51131-4

Extended Washer Self-locking Nut

Special Features:

Non-magnetic

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.460 inches
Overall Height
0.282 inches
Nut Style
Hexagon
Width Across Flats
Between 0.274 inches and 0.284 inches
Tempurature Rating
900.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Material
Iron alloy 660
Precious Material
Silver
Surface Treatment
Silver nut
Surface Treatment
Passivate washer
NSN
5310-01-260-9380
Part Number
HW51131-4
Description
Nut,self-locking,extended Washer
CAGE
15653

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part HW51131-4 NSN 5310-01-260-9380

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29730
FIIG:
A021A0
Concept No.:
1
App. Key:
BT
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

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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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