-Types of Shackles. -General difference and use of Galvanized and Steel shackles.

1. TYPES OF SHACKLES
By Gaurav.U.Paliwal
B.E (Civil)

2. Types of shackles
• Bow/anchor shackles
• Chain/Dee shackle
• Headboard shackle.
• Snap shackle.
• Twist shackle.
• Karabiner (a kind of shackle)

3. Anchor /Bow Shackle
•Both terms are often used interchangeably,
as both names refer to a shackle with a
larger, rounded “O” shape look.
•Bow shackle typically has a larger and
more defined bow area than an anchor
shackle.
•Bow shackle have the body diameter and
pin diameter same.
•The rounded design and larger loop shape
of an anchor shackle or bow shackle reduce
its overall strength, but also allow them to
take loads from many directions without
developing significant side load.

4. Chain Shackles
• Also known as D-
shackles(Dee).
• Is narrower than a bow or
anchor shackle.
• Generally have a threaded pin
or pin close.
• Smaller loop is designed to
take high loads primarily in
line.
• Side and racking loads may
twist or bend this shackle.

5. Headboard Shackle
• Longer version of a Dee-shackle

6. Snap shackles
• Designed with a spring-
activated mechanism to
use quickly and with one
hand.
• Excellent for jobs where
speed is important, or
when it needs to be
repeated
connected/disconnected.
• Have lower working load
limits(WLL)compared to
other shackles hence are
not recommended for
heavy-duty applications.

7. Twist Shackle
• A twist shackle is usually somewhat longer.
• Features a 90° twist so the top of the loop is perpendicular to
the pin.

8. Karabiners
• Used in rope intensive
activities such as
- Climbing
- Construction
- Maintenance work in
buildings(cleaning windows)
- Rope rescue
- Sailing
- Hot air ballooning
- Acrobatics.

9. Galvanized and stainless steel shackles
(General understanding and difference between them)
• Both stainless steel and galvanized metal offer excellent protection
from rust and corrosion, making either a good choice.
• Galvanized shackles are ideal for industrial applications where
moisture is not a major issue.
• Galvanized is also a great value as it tends to be less expensive than
stainless steel, but still maintains the shackle’s strength and durability.

10. • Stainless steel shackles are more corrosive-resistant and, are
therefore ideal for marine applications.
• Generally, they are made of type 316 stainless steel, which is
considered “marine grade.”
• Type 316 contains molybdenum, which makes it resistant to ocean
water , so it is especially useful in extreme conditions or moisture or
in a high chloride environment.
• Type 316 stainless D shackle equipment is ideal for sailing.

11. Thank you