MIL-DTL-24293B
2.2.1 Specifications, standards, and handbooks. The following specifications and standards
form a part of this document to the extent specified herein. Unless otherwise specified, the
issues of these documents are those cited in the solicitation or contract.
FEDERAL STANDARDS
FED-STD-311
Leather, Methods of Sampling and Testing
(Copies of these documents are available online at https://assist.daps.dla.mil/quicksearch/ or from
the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA
19111-5094.)
2.3 Order of precedence. In the event of a conflict between the text of this document and the
references cited herein, 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 Material. The packing shall be made of cattlehide leather.
3.2 Tannage. The leather packing shall be tanned with chromium salts without the use of
vegetable tanning materials.
3.3 Finish. The leather packing shall be full-grain with the flesh side smooth and free from
loose flesh. It may be lightly split or skived to facilitate impregnation.
3.4 Trim. The leather packing shall be in the form of belting butt bends as specified in
FED-STD-311.
3.5 Selection. When provided in the form of belting butt bends, the leather packing shall
have no defects such as deep cuts, damaged grain, open scratches, open grub holes, brands, hip
marks, or any other defects which effect a loss in cutting value greater than 6 percent of the total
area. When purchased in the form of finished packing, the leather packing shall be free from
defects.
3.6 Thickness for weights. The leather packing shall be furnished in the thickness specified
for each weight shown in table I.
TABLE I. Thickness for each weight of leather packing.
Thickness
Weight
Minimum
Maximum
64ths inch
64ths inch
Medium
8 (.125)
10 (.156)
13 (.203)
Heavy
11 (.172)
Extra heavy
14 (.219)
17 (.266)
3.7 Cracking. The leather packing shall not crack (see 4.5).
3.8 Tensile strength. The tensile strength shall be not less than 2,500 psi (17.24 MPa) for
any one specimen (see 4.3).
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