The Harley Buckle is designed to securely retain a stand d-ring, and yet allow reliable and easy release under heavy loads of up to and exceeding 11,000lb's. The unique trip-latch design is the key to permitting controlled release under heavy loads and have been field proven for over 50 years in demanding aviation and military applications. Harley Buckles are constructed using rugged aircraft alloy and high tensile steel (see below for specifications).

Applications

Harley buckles have been, or are currently being used in the following applications:

• Astronaut personal harnesses.
• Airship tie-down.
• Air-drop cargo release.
• Cargo webbing fastening and tie-down.
• Advanced materials handling for conveyance and tie-down.
• Parachute and Para Ponte harnesses.
• Life-raft mountings.
• Litter lashing.

• Tow-target release.
• Wing covers.
• Engine covers.
• Cargo and Litter hoist.
• Ammunition Can Hangers.
• Aircraft tie-downs.
• Free-fall cargo containers and platforms.
• Fuel tank suspension.

Advantages

Because of the unique design of the Harley Clasp, each device is capable of retaining very high loading, and yet releasing on demand through the tripping of the release arm. This is achieved through a patented release cam connected to a high tensile hook and encased in an air-craft alloy housing. The whole assemblage is light, strong and highly reliable, with Harley Clasps having completed many thousands of successful releases throughout their decades-long services lives.

Form-Factors - Styles

The Harley Buckle is available in three basic models:

• High-Load Ejection Clasps

Comprising Model 105, high-load Harley Ejection clasps are capable of securing and releasing loads up to 11,000 lb's.

• Medium-load Ejection Clasps

Comprising Models 102 and 103, medium-load Harley Ejection clasps are capable of securing and releasing loads up to 2240 lb's. and have a simple trigger-action release.

• Auxiliary Buckles

For smaller, lighter loads, (up to 600lb's) the Models 100 and 101 buckles provide a simple twist action locking mechanism for standard "D" rings.

Auxiliary Buckles are used in a variety of harness security and fastening applications, typically to secure webbing or belts, using a D-ring for one end which attaches to the clasp through the securing release mechanism.

Materials

Harley Buckles are constructed of high-grade aircraft alloys and steels including the following:

• 403 CRES
• 4130 Steel
• Oil Tempered Spring Steel Wire ASTM A229, Cl 1
• 2014-T3/T4
• 4140 Steel

The release-pressure for each clasp is approximately 20% of the rated load and the release mechanism of the clasp becomes self-locking at the ultimate load in order that it will not disengage under crash-loading conditions.