6
2.16 MAKING CONNECTIONS:
Snap hooks and carabiners used with this equipment must be self-locking.
Ensure all connections are compatible in size, shape and strength. Do not use equipment that is not
compatible. Ensure all connectors are fully closed and locked.
3M Fall Protection connectors (snap hooks and carabiners) are designed to be used only as specified in each
product’s user’s instructions. See Figure 5 for examples of inappropriate connections. Do not connect snap
hooks and carabiners:
A. To a D-ring to which another connector is attached.
B. In a manner that would result in a load on the gate.
NOTE:
Large throat snap hooks should not be connected to standard size D-rings or similar objects which will
result in a load on the gate if the hook or D-ring twists or rotates, unless the snap hook complies with ANSI
Z359.1-2007 or ANSI Z359.12 and is equipped with a 3,600 lb (16 kN) gate. Check the marking on your snap hook
to verify that it is appropriate for your application.
C. In a false engagement, where features that protrude from the snap hook or carabiner catch on the
anchor, and without visual confirmation seems to be fully engaged to the anchor point.
D. To each other.
E. Directly to webbing or rope lanyard or tie-back (unless the manufacturer’s instructions for both the
lanyard and connector specifically allows such a connection).
F. To any object which is shaped or dimensioned such that the snap hook or carabiner will not close and
lock, or that roll-out could occur.
G. In a manner that does not allow the connector to align properly while under load.
Figure 4 – Unintentional Disengagement
Figure 5 – Inappropriate Connections
If the connecting element to which a snap hook (shown) or carabiner attaches
is undersized or irregular in shape, a situation could occur where the connecting
element applies a force to the gate of the snap hook or carabiner. This force may
cause the gate (of either a self-locking or a non-locking snap hook) to open,
allowing the snap hook or carabiner to disengage from the connecting point.
Small ring or other
non-compatibly
shaped element
Force is applied to the
Snap Hook.
The Gate presses against
the Connecting Ring.
The Gate opens allowing
the Snap Hook to slip off.
A.
B.
C.
D.
E.
F.
G.
Summary of Contents for 3100400
Page 13: ...13 Figure 14 Labeling ...
