3 SALIENT CHARACTERISTICS
A-A-50197A
3.1 General description. The thread shall be made of "long-line" flax. Types I and II shall have "S" or "Z" final twist as specified in the applicable end item specification or in the contract or order. Type III shall have a "Z final twist.
3.2 Physical requirements of thread. The thread shall conform to the physical requirements specified in Table I
TABLE I Physical requirements
Tex Natural Tex Polished Breaking Strength lbs. Test Method
Three Cord
Stitching
Thread |
90 |
105 |
6.0 |
ASTM -D-204 1/2/ |
120 |
135 |
7.5 |
ASTM -D-204 1/ 2/ |
|
150 |
150 |
8.5 |
ASTM -D-204 1/ 2/ |
|
180 |
180 |
10.0 |
ASTM -D-204 1/ 2/ |
|
210 |
210 |
12.0 |
ASTM -D-204 1/ 2/ |
|
240 |
270 |
18.0 |
ASTM -D-204 1/ 2/ |
|
300 |
350 |
19.0 |
ASTM -D-204 1/ 2/ |
|
Lockstitch Twist Thread |
||||
240 |
270 |
18.0 |
ASTM -D-204 1/2/ |
|
350 |
350 |
24.0 |
ASTM -D-204 1/ 2/ |
|
400 |
450 |
30.0 |
ASTM -D-204 1/ 2/ |
|
500 |
500 |
38.0 |
ASTM -D-204 1/ 2/ |
|
600 |
600 |
44.0 |
ASTM -D-204 1/ 2/ |
|
700 |
700 |
52.0 |
ASTM -D-204 1/ 2/ |
|
800 |
800 |
59.0 |
ASTM -D-204 1/ 2/ |
|
800 |
900 |
65.0 |
ASTM -D-204 1/ 2/ |
|
900 |
900 |
72.0 |
ASTM -D-204 1/ 2/ |
|
1000 |
1000 |
81.0 |
ASTM -D-204 1/ 2/ |
|
Hand Shoe |
||||
Thread |
120 |
6.0 |
ASTM -D-204 1/ 2/ |
|
150 |
10.0 |
ASTM -D-204 1/ 2/ |
1/ Testing speed shall be 12 + 0.5 in./min., and a 10 inch gauge length shall be used.
2/ Five determinations per sample unit.
2
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