INCH-POUND
FF-T-276C
16 December 2013
SUPERSEDING
FF-T-276B
April 5, 1967
FEDERAL SPECIFICATION
THIMBLES, 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 thimbles, rope for mechanical 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 Identifying (PIN) system as
shown in the following example:
FF-T-276
-
A
P
1-3/4
Fed
Dash
Type
Finish
Thimble
number
Code
Code
size
1.2.1 Types. Thimbles covered by this specification shall be furnished in the following types, as specified (see
6.2):
Code A -
Type I -
Thimbles for fiber rope.
Code B -
Type II -
Thimbles, light, for fiber and wire ropes.
Code C -
Type III -
Thimbles, heavy for wire rope
1.2.2 Finish. Finish be as specified as follows:
Code Z -
Zinc as specified in ASTM-A153/A153
Code Z1 -
Zinc as specified in ASTM-B633, type VI, Fe/Zn 25
Code Z2 -
Zinc as specified in SAE-AMS-C-81562, type 1,
zinc class 2
Code P -
Cadmium-tin as specified in SAE-AMS-C-81562
Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data that may
improve this document should be sent to: DLA Land and Maritime, ATTN: VAI, P.O. Box 3990,
Columbus OH 432183990, or email fluidflow@.dla.mil. Since contact information can change you may
want to verify the currency of the address information using the ASSIST Online database at
AMSC
FSC 4030
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