MIL-STD-168B
26 May 1969
CONTENTS
Page
1
SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Paragraph 1.
1
1.1
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1.2
scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
REFERENCED DOCUMENTS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
1
DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . .
3.
2
4.
GENERAL REQUIREMENTS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
DETAIL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.
2
sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1
2
Inspection procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2
2
Surface inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.1
2
Measurement of length, size and thickness.. . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.2
2
5.3
Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLES
3
Table I- Classification of visual defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Table II -Classification of dimensional defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURES
5
1. Abrasion bruise below minimum thickness, hand area - Major, all classes . . . . . . . . .
Figure
6
2. Abrasion bruise below minimum thickness, hand area - Major, all classes . . . . . . . . .
3. Abrasion bruise below minimum thickness, wrist area - Major, electrical
7
Minor, other classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
4. Acid cut below minimum thickness, hand area - Major, all classes . . . . . . . . . . . . . .
5. Blister over l/64 inch (whether open, as shown, or closed), hand area -
9
Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
6. Blister over l/8 inch,wrist area - Major, all classes. . . . . . . . . . . . . . . . . . . . . . .
11
7. Buckshot or pockmarks, hand area - Major, all classes. . . . . . . . . . . . . . . . . . . . . . .
12
8. Contact scar, hand area - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
9. Contact scar, hand area - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10. Crease: Hand area - Major, electrical. Minor, other classes. Wrist area -
14
Major, electrical. Minor, other classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
11. Dirt, over l/4 inch - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
12. Dirt - Major, electrical. Minor, other classes . . . . . . . . . . . . . . . . . . . . . . . . . . .
13. Dirt - Major, all classes (top example), Major, electrical. Minor, other
17
classes (bottom example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14. Lump, over l/16 inch, hand area - Major, all classes. (Size lump shown,
18
if in wrist area, would be major for electrical and minor for other classes). . . . . . . .
19
15. Lump, over l/4 inch, anywhere - Major all classes . . . . . . . . . . . . . . . . . . . . . . . . .
20
16. Pinch, hand area - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
17. Pinch, wrist area - Major, electrical Minor, other classes. . . . . . . . . . . . . . . . . . . . .
22
18. Pinch, wrist area - Major, electrical. Minor, other classes . . . . . . . . . . . . . . . . . . . . . .
19. Pit: Under l/64 inch below minimum thickness or more than one pit any -
where - Major, electrical, acid and solvent. Minor, general purpose.
23
Over l/64 inch, anywhere - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24
20. Rings below minimum thickness - Major, all classes . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
21. Rings below minimum thickness - Major, all classes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
22. Roll blister under l/4 inch - Major, electrical. Other classes not a defect. . . . . . . . . . . . . . .
27
23. Roll blister l/4 to l inch - Major, electrical. Minor, other classes. . . . . . . . . . . . . . . . .
28
24. Run; no large bead - Major, electrical. Minor, other classes . . . . . . . . . . . . . . . . . . . . . . . .
29
25. Run; no large bead - Major, electrical. Minor, other classes. . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
26. Snapback: One-Major, electrical. More than one - Minor, other classes . . . . . . . . . . . . . . . . . . . . . .
31
27. Stain - Major, electrical. Minor, other classes. . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
28. Wash-off or weak spot, hand area. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
29. Wash-off or weak spot, hand area - Major, all classes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
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