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| Pan head tapping
screws with cross recessed |
| Standard:GB845-85(ISO7049-1983) |
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| Specifications:ST2.2-ST6.3 |
Length:4.5mm-75mm |
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| Countersunk flat
head tapping screws with cross recessed |
| Standard:GB846-85(ISO7050-1983)) |
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| Specifications:ST2.2-ST6.3 |
Length:4.5mm-75mm |
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| Hexagon socket set
screws with falt point |
| Standard:GB77-85(ISO4026-1977) |
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| Specifications:M3--M20 |
Length:4mm-60mm |
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