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| 21. | black mild steel flat head tinmen rivet |
| 黑铁号头铆钉 |
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| 22. | thin flat head socket shank rivet |
| 扁平头半空心铆钉 |
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| 23. | flat slotted head bolt |
| 平槽头螺栓 |
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| 24. | flat head single action spring hinge |
| 平头单向弹簧铰链 |
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| 25. | flat(countersunk)head scre |
| 沉头螺钉 |
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| 26. | Countersunk flat head screws--Part 2: Penetration depth of cross recesses |
| GB/T5279.2-1997沉头螺钉第2部分:十字槽插入深度 |
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| 27. | bright and black mild steel flat head tinmen rivet |
| 号头铆钉 |
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| 28. | flat taper head rivet |
| 平锥头铆钉 |
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| 29. | Flat head rivet. Use in conjunction with other rivet ends. |
| 平头铆钉。与其他铆钉端点结合使用。 |
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| 30. | Flat round head rivets |
| GB/T871-1986扁圆头铆钉 |
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