RR-
S-550F
7 November 2018
SUPERSEDING
RR-S-550E
10 October 2012
FEDERAL SPECIFICATION
SOCKETS, WIRE ROPE
The General Services Administration has authorized the use
of this federal specification, by all federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers mechanical sockets for mechanical wire ropes used in rigging,
hoisting, towing, stowage, excavating, logging and stump removing equipment, and marine applications.
1.1.1 Federal specification coverage. This federal specification does not include all types, finishes
and classes of the commodities indicated by the title of the specification, or which are commercially
available, but are intended to cover the types, finishes, and classes which are suitable for Federal
Government requirements.
1.2 Classification: This federal specification classification uses a Part or Identifying Number (PIN)
system as shown in the following example:
1.2.1. Types (see 3.2).
A - Open sockets, see figure 1.
B - Closed sockets, see figure 2.
C - Wedge sockets, open, see figure 3.
D - Bridge sockets, open, see figure 4.
E - Bridge sockets, closed, see figure 5.
1.2.2 Finishes (see 3.5
).
1 - Bar
e (uncoated).
2 - Zinc-coated.
AMSC N/A FSC 4030
Comments, suggestions, or questions on this document should be addressed to DLA Land and
Maritime, Attn: VAI, 3990 East Broad Street, Columbus, OH 43218-3990 or fluidflow@.dla.mil.
Since contact information can change, you may want to verify the currency of this address
information using the ASSIST Online at https://assist.dla.mil.
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