fastener specifications

Hex Head Screws: BT-S911 Size and Finish

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Reference Standard: Relevant material and performance testing standards; the available BT-S911 catalog record does not identify a specific standard. Hex head screws can look deceptively simple in a catalog, but accurate sourcing depends on separating what is explicitly listed from what a familiar screw name may seem to imply. For BT-S911, the catalog identifies the item as a Hexagon Head Screw, gives two listed size options—10 mm × 25 mm and 10 mm × 40 mm—and states the finish as galvanized. :contentReference[oaicite:0]{index=0} The practical rule is straightforward: use BT-S911 + the required listed size + galvanized finish as the identification baseline. Do not automatically add washer-head geometry, self-drilling capability, thread … 続きを読む

Carriage Bolt Nut Specifications for Clear RFQs

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Reference Standard: Relevant material and performance testing standards should be confirmed for the buyer’s specific application because the available catalog evidence does not identify a particular standard for the listed carriage hardware. A carriage bolt nut request can become ambiguous when the bolt diameter, thread notation, length, nut type, or finish is omitted. The catalog evidence provides one clearly identified galvanized carriage bolt entry, BT-S909, together with separate inch-size carriage hardware entries. The safest way to source these items is to preserve each verified record exactly and avoid assuming that nearby bolt and nut descriptions automatically form a compatible pair. Confirmed catalog position: BT-S909 is identified as a carriage bolt … 続きを読む