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Information Specification documents threads
Screw-in taps and screw-in holes with sealant (sealing in the thread)
| Screw-in plug: |
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acc. to DIN 3852 -
part 1:
with taper metric thread acc. to DIN 158 |
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acc. to DIN 3852 -
part 2:
with taper Whitworth-pipe thread acc. to DIN 3858 |
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NPT:
screw-in plug and screw-in hole with taper NPT-thread acc. to ANSI / ASME B 1.20.1 - 1983 |
| Screw-in hole: |
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acc. to DIN 3852 -
part 1:
with cylindric metric thread acc. to DIN 13 |
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acc. to DIN 3852 -
part 2:
with cylindric Whitworth pipe thread acc. to DIN 3858 |
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Dimensions of female screw-in holes |
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part 1 |
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part 2 |
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NPT |
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min. b2 |
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min. t3 |
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M 8 x 1,0 |
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5,5 |
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10,0 |
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Rp 1/8'' |
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5,5 |
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9,5 |
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M 10 x 1,0 |
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5,5 |
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10,0 |
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M 12 x 1,0 |
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Rp 1/4'' |
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8,5 |
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13,5 |
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M 14 x 1,5 |
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8,5 |
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13,5 |
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M 16 x 1,5 |
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Rp 3/8'' |
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8,5 |
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13,5 |
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M 18 x 1,5 |
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8,5 |
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13,5 |
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M 20 x 1,5 |
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Rp 1/2'' |
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10,5 |
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M 22 x 1,5 |
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10,5 |
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16,5 |
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1/8'' NPT |
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6,9 |
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11,6 |
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1/4'' NPT |
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10,0 |
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16,4 |
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3/8'' NPT |
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10,3 |
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17,4 |
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1/2'' NPT |
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13,6 |
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22,6 |
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3/4'' NPT |
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14,1 |
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23,1 |
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1'' NPT |
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16,8 |
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27,8 |
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1 1/4'' NPT |
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17,3 |
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28,3 |
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1 1/2'' NPT |
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17,3 |
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28,3 |
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