Description
Press-Fit Drill Bushing with Head4 mm ID, 7 mm OD, 13.5 mm Long-96977A182 — BOLTON SKU 60018.
About the 96977A182 Press-Fit Drill Bushing, 4mm ID Head
McMaster-Carr catalogue number 96977A182 is a headed press-fit drill bushing sized 4 mm bore by 7 mm outside diameter, with a 13.5 mm overall length and a 1.5 mm wall around the bore. Press-fit means the bushing is installed straight into the fixture plate by interference, as distinct from renewable types that sit inside a pressed-in liner, and the head bears on the plate face to locate it. Length is what sets this size apart: 13.5 mm of body gives more than three bore diameters of guidance behind the drill, which is what a thicker jig plate or a long unsupported tool overhang calls for, and the same length provides a generous interference land to hold the bushing in place under repeated tool thrust. The bore takes 4 mm drills, the size used for M4 clearance holes and 4 mm dowel and rivet positions.
Key specifications
| Manufacturer part number | 96977A182 |
|---|---|
| Catalogue | McMaster-Carr |
| Product type | Press-fit drill bushing (jig bushing), headed |
| Inside diameter | 4 mm |
| Outside diameter | 7 mm |
| Overall length | 13.5 mm |
| Wall around bore | 1.5 mm (implied by ID and OD) |
| Installation | Interference / press fit into a jig or fixture plate |
Typical applications
The long body suits thicker jig plates and drilling through stacked or laminated material, where the tool has to stay square over a longer path. A 4 mm guided hole covers M4 clearance, 4 mm rivet and dowel positions on airframe brackets, machined plates and ground-support fabrications. It is a common size in modification and repair fixtures where the hole pattern is drilled again on every unit.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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