MIL-S-58112
3.3. Design and Construction. Each sling shall consist of an apex
fitting and four sling legs which are adjustable in length from 3.-8 to 5
meters (12 to 16 feet). Each sling leg shall consist of a 3.8 meter (12
foot) long nylon rope assembly, a grab hook assembly and an 2.5 meter (8
foot) length of steel chain. The sling shall be fabricated, assembled and
stowed in accordance with Drawing No. 33850-00001 and subordinate
drawings.
3.3.1 Apex fitting. The apex fitting shall consist of a clevis with a
removable pin and an aluminum spacer secured with a safety bolt, slotted
nut and cotter pin. The clevis shall be made from an aluminim forging for
the 5,000 kg capacity apex fitting and an alloy steel forging for the
15,000 kg apex. The apex fitting shall be manufactured and assembled in
accordance with Drawing No. 38850-00004 and subordinate drawings.
3.3.2
Sling rope assembly. The sling rope assembly shall consist of
double-braided, nylon rope conforming to MIL-R-24050 and shall be
fabricated in accordance with Drawing No. 38850-00009. A standard eye
splice shall be provided at each end. The strength member at the rope eye
shall be protected with a polyurethane coated thimble and a cone shaped
polyurethane potted joint. General guidance for standard eye splicing is
contained in the Splicing Manual-Braided Rope and The Splicing Book.
The assembled rope shall be provided with two coats of an abrasion
resistant coating as specified on Drawing No. 38850-00009. The finished
rope assembly, P/N 38850-00009-55M shall lay unrestrained in coils not
exceeding 38 centimeters {15 inches) in diameter and P/N 38850-OOO09-56M
shall lay unrestrained in coils not exceeding 45 centimeters (18 inches)
in diameter.
Grab hook assembly. The grab hook shall consist of an alloy
3.3.3
steel forging incorporating a clevis for connection to the rope assemble
chain at the other end. An alloy steel pin and an aluminum spacer shall
be secured in the clevis using a snap ring. A sheet metal keeper and
spring shall be provided to retain the chain in the grab hook. The keeper
and spring shall be secured to the grab hook using a bolt and locknut.
The grab hook assembly shall be manufactured in accordance with Drawing
No l 38850-00011 and subordinate drawings.
Pins. Alloy steel pins used with the apex fitting and grab hook
3.3.4
assemblies shall be manufactured in accordance with Drawing No.
38850-00008.
Chain assembly. The chain assembly provides adjustment in the
3.3.5
length of each leg by passing through the load slinging provision back to
the grab hook. The chain shall be manufactured in accordance with Drawing
No l 38850-00053.
3.3.6
Unit Pack. Each complete sling assembly shall be stowed in a kit
bag conforming to MIL-K-41835.
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