Nut, Tube Coupling

Part # MS21921-8J

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The MS21921-8J Sleeve Coupling Nut is a vital component for aircraft engines and helicopters, made from durable 304 steel. With right-hand threads (0.750" size, 16 TPI), it\'s designed for secure fastening and corrosion resistance, meeting government standards for reliability in aviation.
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Overview

Nut Tube Coupling is identified by MS21921-8J and is designed for use in multiple aircraft systems. This nut features a 45-degree nominal seat angle and right-hand thread direction, ensuring a secure fit. It is constructed from steel comp 304 overall, which provides durability. With a nominal thread size of 0.750 inches and a thread quantity of 16 per inch, this nut is suitable for specific applications. The nut height measures 0.860 inches nominal, and it has a width across flats of 0.875 inches nominal. The product is also passivated overall for enhanced corrosion resistance.

Features & Benefits

Features
  • Constructed from durable 304 steel for enhanced strength and longevity.
  • Right-hand thread with a nominal size of 0.750 inches for secure fastening.
  • Passivated surface treatment for improved corrosion resistance.
  • Meets government standard 96906-Ms21921 for reliability in critical applications.
Benefits
  • Ensures long-lasting performance in high-stress aviation environments.
  • Provides secure connections, enhancing overall safety and reliability.
  • Resists corrosion, extending the lifespan of the component.
  • Complies with industry standards, ensuring quality and performance in critical systems.

Technical Information

ATA Number

21,
24,
25,
26,
28,
29,
32,
34,
38,
49,
52,
71,
78

ATA Chapter

Air Conditioning
Electrical Power
Equipment / Furnishings
Fire Protection
Fuel
Hydraulic Power
7 more

ATA Group

Airframe Systems
Structure
Power Plant

ATA Section

PRESSURIZATION CONTROL SYSTEM
AIR CYCLE SYSTEM
CONDITIONED AIR TEMPERATURE CONTROL SYSTEM
AC GENERATOR DRIVE SYSTEM
GALLEYS
PORTABLE FIRE EXTINGUISHERS
11 more

NIIN

008593517

NSN

4730-00-859-3517

FSCG

4730

FSCG Category

Hose, Pipe, Tube, Lubrication, and Railing Fittings

UNSPSC Code

40183100

UNSPSC Category

Tube fittings

Lead Time (Days)

430

Not For Sale

No

Product Class Description

Tube fittings

Country of Origin

United States

Harmonized Tariff Schedule Code

7307290090

Manufacturer CAGE Code

0TP31
14798
52930
NOREQ
59680

Storage Required

No

Unit Of Measure

EA

Pieces Per Pound

0

DFAR Applicable

Yes

Revision Level Applicable

Yes

Product Class

40183100

Material Composition

CRES

Design Holder CAGE Code

96906

Design Holder

MS STANDARDS

Potential Alternates

116949ITL
4730008593517
MS21921-8C

Aircraft Makes

Boeing
Airbus

Aircraft Models

767-300ER
747-400F
777
767-300EREM
767-300BCF
A321-100
45 more

Shipping Details

Dry Ice

No

ECCN

EAR99

Proprietary Part

No

Hazmat

No
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