MS28778 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | Packing, tube fitting boss |
| Compound specification | MIL-P-5510 |
| Temperature range | -65 to 212 °F |
| Status | Check the current issue of the standard before design use. |
Part numbers
| Part no. | Size | Thickness, in | Inside dia., in |
|---|---|---|---|
| MS28778-2 | 1/8 | .064 | .239 |
| MS28778-3 | 3/16 | .064 | .301 |
| MS28778-4 | 1/4 | .072 | .351 |
| MS28778-5 | 5/16 | .072 | .414 |
| MS28778-6 | 3/8 | .078 | .468 |
| MS28778-8 | 1/2 | .087 | .644 |
| MS28778-10 | 5/8 | .097 | .755 |
| MS28778-12 | 3/4 | .116 | .924 |
| MS28778-14 | 7/8 | .116 | 1.047 |
| MS28778-16 | 1 | .116 | 1.171 |
| MS28778-20 | 1-1/4 | .118 | 1.475 |
Size is the tube O.D. in inches.
Part number
What each code means
| Part | Meaning |
|---|---|
| Format | MS28778-<dash> |
| Example | MS28778-2 — dash 2 |
Notes from the standard
- O-ring for hydraulic fluid systems per MIL-H-5606 at +160 °F.
Where to buy
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Sources
- MS28778 — Packing, Preformed, Straight Thread Tube Fitting Boss — nominal sizes and part numbers.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.