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Supply forms
Studs, bolts, nuts and washers — supplied as a matched set where the joint needs one.
| Item | Form | Used for |
|---|---|---|
| Stud | Threaded both ends or continuously | Flange and pressure-vessel joints |
| Bolt | Hex head or socket head | Where a head is required |
| Nut | A194 2H, 8 or 8M | Matched to the stud grade |
| Washer | To the specification | Where the joint calls for one |
Kit supply
A flange joint is usually bought as a set: studs, two nuts each, washers. Supplying it as a set means one certificate covers the joint and the pairing is not left to the buyer’s stores.
Identification
- Grade marking on the head or the end of the stud, per the standard
- Heat number on the tag and on the certificate
- Coating identified on the packing list