Build the spec, see what it implies.
Pick a socket head cap screw, a Grade 8 hex cap screw, B7 studs with 2H nuts or threaded rod cut to length, or switch to blanks for 1018, 1045, 6061 and A36. The designation, head marking, tensile figure, matching nut and the warnings that matter update as you change each line.
Fastener or blank, one line at a time
What the readout is telling you
Thread first, then length
1/2-13 × 2 in Hex Cap Screw, SAE Grade 8, Yellow Zinc. Diameter, threads per inch, length under the head, family, grade, finish. That order is how the bin is labelled and how the reply is written back.
The head tells the grade
Grade 5 shows three radial lines, Grade 8 shows six. Stainless and socket heads carry none, so the grade is on the lot label. If a hex screw in a load path has a blank head, it was not sold here.
Minimums, not typicals
Grade 5 is 120 ksi to 1 in, Grade 8 is 150 ksi, A574 socket heads 170 to 180 ksi, B7 125 ksi to 2-1/2 in. Cold-worked 18-8 and 316 sit around 70 ksi; annealed stock runs lower.
Rounded up to the box
Boxes of 100 up to 3/8 in, 50 to 5/8 in, 25 above. Ask for 130 at 1/4 in and the readout shows two boxes. We quote by the box because that is how they come off the pallet.
Blanks eat 1/8 in per cut
Blank mode adds the saw kerf to every piece and works out weight from density: 0.2836 lb/in³ for steel, 0.0975 for aluminum. Use it to check whether a job ships in a box or on a pallet.
Combinations it refuses
B7 only as stud or rod. Stainless never plated. SAE grades never on a metric thread. Greyed options are not oversights; they are combinations we will not supply.
Warnings it raises, and why
| Combination | Flag | What to do |
|---|---|---|
| Grade 8, zinc plated | Hydrogen embrittlement | Plain finish or a baked lot above 1/2 in under sustained load |
| Hot-dip galvanized | Nut binds | Oversize-tapped nuts, supplied with the screws |
| 18-8 or 316, any | Galling | Anti-seize, slower driver speed |
| 18-8 near salt | Pitting | Change to 316 |
| Short screw into aluminum | Thread strip | Two diameters of engagement, or an insert |
| Low-carbon rod | Not graded | Hangers and light duty only; B7 for load |
Zinc on a Grade 8 screw is yellow for a reason. Ask before you put plain-finish alloy outdoors.
The configurator is a reading aid. It does not check stock. The written reply does, and it can disagree with the screen if the shelf says otherwise.
Send this spec to the counter
Press "Send this spec" above and the readout lands in the box below. Add a name and one way to reach you. The reply comes in writing with stock, lead time and the price basis per line.