MIL-DTL-75K
3.2.4.5 Packaging group 24 (see 1.2.5). Except as specified herein, electron tubes exceeding an 18
by 18 by 40-inch (45.7 by 45.7 by 101.6 centimeters) unit pack size shall be preserved in accordance with
MIL-STD-2073-1 for physical and mechanical protection. Electron tubes that are tunable or adjustable or
have silver plated contacts or surfaces shall be preserved in accordance with MIL-STD-2073-1 either for
sub-method "container, water vapor-proof, heat sealed bag container" or for sealed, rigid metal container.
Cushioning, blocking, and bracing shall be applied as specified herein. The unit container shall conform
to ASTM-D6251/D6251M.
3.2.4.6 Accessories (when separately acquired). Accessories, such as shields, retainers, and
adapters, shall be unit packed one each in accordance with MIL-STD-2073-1 for physical and mechanical
protection. Unit pack quantities for other than one each shall be as specified (see 6.2). The unit
container for items exceeding 1 inch (2.54 centimeters) in the smallest overall dimension shall conform to
variety 2 of PPP-B-566 or PPP-B-676.
3.2.5 Commercial preservation. Commercial preservation shall be in accordance with ASTM-D3951.
Except as specified herein, commercial preservation for electron tubes and accessories shall conform to
the MIL-STD-2073-1 requirements. For packaging groups 1, 4, 9, and 23, non-weather (or non-water)
resistant versions of the PPP-B-566, PPP-B-676, ASTM-D5118/D5118M, or ASTM-D5168 unit containers
shall be used. For packaging group 24, unit containers conforming to ASTM-D6251 domestic type;
ASTM-D6880, class 1; ASTM-D5118/D5118M, weather-resistant class (not to exceed the limits of the
box specification); or ASTM-D5168 weather-resistant class may be used as the unit container when
commercial is specified for packing. Unless otherwise specified in the contract (see 6.2), the quantity per
unit pack shall be at the option of the supplier.
3.3 Packing. Packing shall be level A, level B, or Minimal, as specified (see 6.2).
3.3.1 Level A.
3.3.1.1 Packaging groups 1, 4, 9, 23, and accessories. Electron tubes and accessories, preserved as
specified in 3.2, shall be packed in wood containers conforming to ASTM-D6251/D6251M. Closure and
strapping shall be in accordance with the applicable container specification, except that metal strapping
shall conform to ASTM-D3953 for nail-free, flat strapping with coated finish. The requirements for level B
packing shall be used when the total quantity of a stock numbered electron tube or accessory for a single
destination does not exceed a packed volume of one cubic foot (0.02832 cubic meter).
3.3.1.2 Packaging group 24. The unit container for each electron tube unit packed as specified in
3.2.4.5 will serve as the shipping container. For electron tubes with commercial preservation, the
shipping container shall conform to that specified for the level A unit container. Closure, waterproofing,
and banding (reinforcement requirements) shall be in accordance with applicable container specification
for level A. When necessary to facilitate handling, weather (or water) resistant skid or pallet base shall
be applied in accordance with the applicable box specification, or if not specified, in a manner which will
adequately support the enclosed tube and facilitate the use of material handling equipment.
3.3.2 Level B.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business