FF-T-276C
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited
herein (except for related specification sheets), the text of this document takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First Article Test. First article test or certification is required with the approval of the procuring activity.
3.2 Material. The thimbles shall be made of cold-rolled or hot-rolled steel conforming to QQ-S-698.
3.2.1 Recycled, virgin and reclaimed materials. The offeror/contractor is encouraged to use recovered
materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition
Regulation (FAR)."
3.2.2 Finish. The thimbles shall be hot-dip galvanized in accordance with ASTM-A153/A153 or have
electrodeposited coating in accordance with ASTM-B633, Type VI, Fe/Zn 25 or mechanically deposited in
accordance with SAE-AMS-C-81562, type 1, zinc class 2. The zinc coating shall be adherent, smooth, and free
from uncoated spots, injurious lumps, blisters, gritty areas, acid spots, black spots, and dross or flux. The zinc
coating shall be free from any area of paint or other coating, such as aluminum, which indicates the hiding or
disguise of any repair, blemish, or other defect.
3.2.4 Cadmium. Cadmium as specified in SAE-AMS-C-81562. Cadmium is harmful to the environment and
shall not be used unless zinc plating cannot meet application needs.
3.3 Construction. The thimbles shall be furnished closed and shall be constructed as follows:
3.3.1 Type I. Fiber rope thimbles shall be of split round construction conforming to the design and dimensions
shown on figure 1. The width of score shall be greater than the nominal size by 1/32 inch for sizes smaller than
1/2 inch and by 1/16 inch for sizes 1/2 inch and larger.
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