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|  MIL-S-45387B(AT)
5. PREPARATION FOR DELIVERY
5.1 Preservation, packaging, packing and marking. Preservation and packaging for shipment
and storage shall conform to the requirements of the packaging sheets (see 6.1).
6. NOTES
*
6.1 Ordering data. Procurement documents should specify the following:
(a) Title, number, and date of this specification.
(b) Number of samples required for preproduction testing (see 4.2).
(c) Levels of packaging and packing is required (see 5.1).
6.2 Recommended processing. The responsibility of furnishing spring to finished
dimensions within tolerances shown on drawings, and that will conform to requirements of section 3
rests with the contractor. The means and methods of executing the work will therefore be determined
by the contractor. In this connection, it is called to the contractor's attention that processing of
springs in steps as indicated below has resulted in acceptable springs.
(a)
Upset ends.
(b)
Cycle anneal (Brinell hardness 207-262).
(c)
Straighten hot (from step b).
(d)
Clean (abrasive blast).
(e)
Center.
(f)
Face ends.
(g)
Drill and tap holes.
(h)
Finish all surfaces of spring to drawing tolerances.
(i)
Cold form, hob or form grind splines.
NOTE: If splines are hobbed, the operation may be performed after step "m".
(j) Heat treat as follows (see step n):
(1) Heat in a controlled atmosphere furnace, neutral salt both or by electric means to
control decarburization and quench in oil held at 110 to 117F.
(2) Temper immediately before cooling to room temperature to hardness specified in
3.5.2 (800F., minimum).
(k) Straighten hot off tempering heat (see 3.5.3). (No straightening to be done below
600F.).
(l) After final heat treatment and before forming serrations, check final hardness on
surface of upset diameter.
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