Round and hex threaded standoffs in 304 steel, brass and nylon — sold by the piece, no minimum order. M2 thread as standard, with male-female, female-female and double-ended bodies in stock.
Round or hex
Hex standoffs take a spanner, so they can be tightened and removed without gripping the body — the right choice anywhere the standoff has to be torqued or serviced. Round standoffs are turned by hand or left finger-tight, and are chosen when the body needs to be smooth: through a panel hole, inside a housing, or anywhere a hex corner would catch. Both are made in the same thread and length range, so the choice is about how it is installed, not how it performs.
Male-female, female-female, double-ended
A male-female standoff has a thread on one end and a tapped hole on the other — the workhorse form, board to chassis. Female-female is tapped at both ends and joins two male threads, usually two screws from opposite sides. Double-ended (male-male) has thread at both ends and stands between two tapped parts. If you are matching an existing assembly, the male thread length and the body length are two separate numbers, and both matter.
Threads and lengths
M2 × 0.4 is the standard thread in this range, with M2.5, M3 and M4 available. Body lengths start at 3 mm and step in 1 mm increments through the common 3–20 mm range — 3, 4, 5, 7, 10 and 12 mm are the ones that move; 7 mm in particular is a common panel-plus-board stack. Non-standard lengths are cut to order in small batches.
Cross-referencing a part number
If you are working from a distributor part number — Harwin, or a Chinese YJT 13001 / 13002 drawing — match three things and ignore the rest of the code: thread size, across-flats (hex) or body diameter (round), and body length. Those three determine fit. Plating and material are the fourth decision, and they matter for corrosion and weight.
Wholesale and OEM
Container quantities, custom lengths, non-standard threads and specified platings are quoted directly, usually within 24 hours. Blind dropshipping is available — no invoice inside the parcel. Send the drawing or the part number and the annual quantity.
