MIL-DTL-18295F
and shall meet the requirements of table V for five-link sections, or be rejected. Two five-link
measurements shall be taken three links in from the end of each shot and shall be recorded in the
test reports and identified with the respective shot. In the five-link check, the first five links shall
be measured. Then for the next set of five links, two links from the previous five links shall be
included. This procedure shall be followed throughout the entire length of chain. The weight of
each shot shall be as specified in table II or the shot shall be rejected. The plate sinker shackle
and its bolts shall be tested separately from other components.
TABLE V. Length over any five links with 10 percent of the proof load applied.
Chain length over five links
Nominal diameter
Minimum
Maximum
inch and (mm)
inch and (mm)
inch and (mm)
1.75 ( 44)
38.50 ( 980)
39.45 (1 002)
2.00 ( 51)
44.00 (1 118)
45.10 (1 145)
2.25 ( 57)
49.50 (1 257)
50.75 (1 289)
2.50 ( 63)
55.00 (1 397)
56.40 (1 433)
2.75 ( 70)
60.50 (1 537)
62.00 (1 575)
3.00 ( 76)
66.00 (1 676)
67.65 (1 718)
3.50 ( 89)
77.00 (1 956)
78.95 (2 005)
4.00 (102)
88.00 (2 235)
90.20 (2 291)
4.6.3 Dimensions and inspection of surfaces. After the proof test, five nonadjacent links per shot
and all accessories shall be visually examined for surface defects. Each component shall be within
the specified dimension. Any surface defects such as cracks, dents, and cuts shall be ground down
by means which prevent heating of the component (burn marks shall be cause for rejection) to not
greater than 0.063-inch (1.6 mm). In addition, for cast components, a negative tolerance or line
of reentry shall cause rejection of the component. All test specimens shall be examined for correct
marking. If any of the above criteria are not met, the component shall be rejected.
4.6.4 Swivel test. A test shall be conducted on every swivel. The test will determine the ability
of a swivel to rotate. While suspended from the small end and hanging with the weight equivalent
to one shot of its associated largest chain size, the swivel shall rotate one revolution with the
maximum torque of the applicable chain size (in inches (mm)) calculated at 100 foot pounds (136
N⋅m) torque per inch of nominal chain size as follows: [nominal chain size (diameter in inches
(mm)) multiplied by 100 foot pounds (N⋅m) torque] or d(100) = torque in foot pounds (N⋅m).
Failure of the swivel to rotate one revolution with the applied torque shall be cause for rejection
of the swivel. Make note of torque that was required to rotate the swivel. The required torque
for the test shall be recorded as part of the CoC. Surface hardness shall be tested in accordance
with ASTM A 370, and recorded on the test report. Failure to pass the surface hardness test shall
result in rejection (see 3.3.7).
4.6.5 Impact test. Test samples, as stated in table IV, shall be made from finished components,
and heat treated the same as the finished components it represents. All test samples shall have
three test specimens. Forged chain shall have three test specimens with a Charpy V-Notch at the
center of the weld, and three test specimens opposite the flashweld. Accessories shall have three
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