Size charts · Reference · No sales pitch
Pick a size. See what you're getting.
Twenty-four years of the same counter questions, turned into something you can use. Pick a size and the picker draws the fastener in front of you, with the dimensions that matter next to it.
CAT-01 / DWS·DAVENTRY
Bolting
Hex head setscrews and bolts, metric and imperial. Across flats, head height, pitch and thread length, drawn to size.
4 charts · DIN 933 · DIN 931 · UNC/UNF
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CAT-02 / DWS·DAVENTRY
Socket screws
Cap, low head, button, flanged button, countersunk and grub — metric and imperial. Head diameter, head height, key size and key engagement.
10 charts · DIN 912 · 7984 · 7380 · 7991 · B18.3
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CAT-03 / DWS·DAVENTRY
Nuts
Full, nyloc, thin, Stover, flange and K-nut, metric and imperial — each with its own chart and its own range.
9 charts · DIN 934 · 985 · 439 · 980V · B18.2.2 · MS21042
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CAT-04 / DWS·DAVENTRY
Washer sizes
Form A, form B and penny, with the bore, outside diameter and thickness — and both figures at the sizes where BS 4320 and ISO 7089 disagree.
M1.6 – M60 · ISO 7089 · BS 4320 · ISO 7093
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Got a question that is not here? The counter at Baird Close answers them all day — ask us and we will give you a straight answer, whether or not it ends in an order.