ISO 15983A. Blind/ Pop Rivets. UNF Full Hexagon Nut Self Colour Grade 5 DIN 934. M4 Machine Screws Slotted Countersunk Brass DIN 963. If you're not happy, we will do everything possible to help. Usually, the easy bit is getting the order out the door, but, what happens after can occasionally disappoint us both.
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