Model: 21AX784

Hexagon Self-locking Nut

Special Features:

Proof load 17, 429

Properties:

Thread Class
2b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all nonmetallic design
Nut Style
Hexagon
Nut Height
Between 0.427 inches and 0.448 inches
Width Across Flats
Between 0.736 inches and 0.750 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.500 inches
Bearing Surface Type
Washer faced
Part Name Assigned By Controlling Agency
Locknuts, hex-nylon patch type
Material
Plastic nylon locking insert
Material
Steel nut
Surface Treatment
Zinc nut and chromate nut
NSN
5310-01-551-8282
Part Number
21AX784
Description
Nut,self-locking,hexagon
CAGE
89619

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 21AX784 NSN 5310-01-551-8282

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:
A
ESD:
A
ESD:
A
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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