MIL-DTL-10884H
TABLE I End Items Testing
Characteristic
Requirement
Test method
Number of
Result
reference
Paragraph
samples tested
report
Functioning of
3.2
4.3.1
1
Pass/fail
assembled
fastener
Resistance to stress
3.3
4.3.2
1
Pass/fail
corrosion cracking
Enamel finish: Gloss
3.4.5.1.1
4.3.3
1
Pass/fail
Resistance to hot
3.4.5.1.2
4.3.4
1
Pass/fail
soap solution
Solvent resistance
3.4.5.1.3
4.3.5
1
Pass/fail
Resistance to
3.4.5.1.4
4.3.6
1
Pass/fail
enamel chipping
Resistance to brittleness
3.4.5.1.5
4.3.7
1
Pass/fail
4.3 Methods of inspection.
4.3.1 Function test. The male and female half of the fastener shall each be attached to a
fabric or material for each application in accordance with the fastener manufacturer's
recommendations for attachment method, foundation thickness, and item construction. Determine
whether rotation, if any, of any part prevents effective assembling or functioning when tested as
specified herein (see 3.2). After attachment, the male and female halves of the fastener shall be
visually inspected and the attachments shall be subjected to manufacturer's recommended
attachment strength tests and shall be at or above specified values. Cracks in the rolled eyelet
portion of the attached male or female halves of the fastener shall not constitute a test failure.
The male and female half shall be manually snapped together and shall snap and unsnap at the
point of periphery normally used when opening and closing. The fastener shall be manually
operated as stated not less than four times to determine compliance with 3.2. Any sample not
snapping or unsnapping shall constitute failure of this test.
4.3.2 Stress corrosion cracking test. The brass snap fastener components in the half-hard to
harder temper shall be tested for stress corrosion cracking in accordance with ASTM B154. Any
sample having evidence of stress corrosion cracking shall constitute failure of this test.
4.3.3 Enamel gloss test. The enamel gloss of the button cap shell shall be tested by visually
comparing against a black or brown, as applicable, enamel plain panel whose gloss has been
determined to be 40 in accordance with ASTM D523. Any button cap shell having a gloss greater
than 40 shall constitute failure of this test.
4.3.4 Enamel resistance to hot soap solution test. Th resistance of the enamel on the button
shall be tested by immersing the button in a 5 percent soap solution maintained at 195 degrees F
± 5 degrees, for a period of not less than 2 hours. The soap shall conform to ASTM D498. After
immersion, the button shall be rinsed and the enamel on the cap shell examined for differences in
appearance from the unimmersed control version. An attempt shall be made to furrow through
the enamel with the thumbnail. Any difference in enamel film appearance, except for slight color
change or slight dulling, or any enamel film having evidence of thumbnail furrow through the film
shall constitute failure of this test.
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