MIL-DTL-29181C
2.4 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 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in
accordance with 4.2.
3.2 Construction. The hasps shall conform to the design, details, dimension, and material
requirements of drawing 5532334 for style 1 and drawing 5532335 for style 2 (see figures 1
and 2).
3.2.1 Mounting bolt holes. Unless otherwise specified (see 6.2), each half of style 1 and 2 hasps
shall provide for bolting of each half to door or wall surface with 0.375-inch (9.5 millimetre
(mm)) carriage bolts. Square holes for the square necked bolts shall be machined or cast in the
back side of each half of the hasp section. Bolt holes shall be horizontally centered and vertically
spaced. The top and bottom holes shall be centered 1.5 inches (37.5 mm) from the top and
bottom outside surfaces. Vertical spacing shall be 2.9 inches (74 mm) on center bolts
(see figures 1 and 2).
3.3 Materials. Materials used shall be free from defects which would adversely affect the
performance or maintainability of individual components or of the overall assembly. Materials not
specified herein shall be of the same quality used for the intended purpose in commercial practice.
Unless otherwise specified herein, all equipment, material, and articles incorporated in the work
covered by this specification are to be new and fabricated using materials produced from
recovered materials to the maximum extent possible without jeopardizing the intended use. The
term "recovered materials" means materials which have been collected or recovered from solid
waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials.
Unless otherwise specified, none of the above shall be interpreted to mean that the use of used or
rebuilt products is allowed under this specification.
3.3.1 Casting materials. Unless otherwise specified (see 6.2), the casting material shall be
corrosion resisting steel, grade CF-3, CF-3M, CF-3MN, or CA-6NM per ASTM A 743.
3.3.1.1 Heat treatment. Castings shall be heat treated as specified in ASTM A 743 and shall
exhibit mechanical properties specified in 3.4.
3.4 Mechanical properties.
3.4.1 Hardness. Hardness shall be as specified in test per ASTM E 18.
3.4.2 Impact resistance. Energy absorbed shall be not less than 50 foot-pounds
(67 791 Newton metre) at room temperature.
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