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ORFS bulkhead lock-nut envelope, dash -8
ORFS bulkhead lock-nut envelope, dash -8: hex 1.125 in (28.57 mm) across flats × 0.350 in (8.89 mm) thick (Brennan FS0306-08), plain bore Ø20.64 at the nominal major diameter of 13/16-16 (a plain hole in place of the thread); no chamfers
Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.
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Dimensions
| dash | -8 |
|---|---|
| tube OD (in) | 1/2 |
| thread (UN) | 13/16-16 |
| nut hex B (FS0318) | 0.938 in (23.83 mm) |
| nut width Q (in) | 0.827 |
| lock nut hex B (FS0306) | 1.125 in (28.57 mm) |
| lock nut width TT (in) | 0.350 |
| union hex H (FS2403, in) | 0.875 |
| male thread OD / female ID (in, as printed) | 13/16 (0.82) / 3/4 (0.75) |
| face-seal O-ring (Parker, AS568) | 2-014 (ID 0.49 / 12.4 in / mm, W 0.07 / 1.78) |
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ORFS O-ring face seal fittings (SAE J1453), dash -4 to -24: thread, tube OD, O-ring size, nut hex + lock-nut envelopes: every size, notes, mating features and sources. What thread, O-ring and wrench size is an ORFS -6 or -8 fitting?