3D0026-4 Nut

The Boeing Company

Part # 3D0026-4

The 3D0026-4 nut is a durable castellated hex component with a height of 0.281" and width from 0.306" to 0.316". Made from iron alloy with silver treatment, it has a right-hand thread of 0.250" and 28 TPI, rated at 46.0 Rockwell C. Its all-metal design ensures stability under vibration.
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Overview

The 3D0026-4 nut is a castellated hexagon component engineered for secure fastening in several applications. With a nominal height of 0.281 inches and a width across flats ranging from 0.306 inches to 0.316 inches, this nut is constructed from iron alloy and features a silver surface treatment for excellent durability. The right-hand thread series has a nominal size of 0.250 inches and a thread quantity of 28 per inch, ensuring a reliable connection. With a hardness rating of 46.0 Rockwell C maximum, it is designed to withstand significant stress while maintaining integrity. The prevailing torque all-metal design enhances its locking feature, making it suitable for applications requiring stability under vibration.

Features & Benefits

Features
  • Castellated hexagon design for secure fastening.
  • Silver surface treatment for excellent durability and corrosion resistance.
  • Prevailing torque all-metal design for reliable locking capability.
Benefits
  • Ensures a stable connection in high-stress environments.
  • Reduces the risk of loosening due to vibration.
  • Offers excellent resistance to wear and environmental factors.

Technical Information

ATA Number

27,
32,
55

ATA Chapter

Flight Controls
Landing Gear
Stabilizers

ATA Group

Airframe Systems
Structure

NIIN

013655763

NSN

5310-01-365-5763

FSCG

5310

FSCG Category

Nuts and Washers

Lead Time (Days)

188

Certification Status

CERTIFIED

ATA Part Number

3D0026-4

CAGE Code

88277

Commercial Part

Yes

Harmonized Tariff Schedule Code

7318160085

Repairable

No

Specification Part Number

3D0026-4

Supplier Part Number

3D0026-4

Landing Gear Part

No

Leasable

No

Returnable

No

Aircraft Makes

Mcdonnell Douglas

Aircraft Models

MD90
MD80

Shipping Details

ITAR Compliant

No

Part Explosive

No

ECCN

9A991.d

Dry Ice

No
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