Description
Press-Fit Drill Bushing with Head, 4 mm ID, 7 mm OD, 9.5 mm Long (96977A181) — BOLTON SKU 60017.
About the Press-Fit Drill Bushing with Head, 4 mm
Press-fit drill bushings are pressed permanently into a fixture-plate hole sized slightly smaller than the bushing body, so drill bits and other cutting tools are guided precisely while the plate itself is protected from wear. This headed metric bushing has a 4 mm inside diameter, 7 mm body outside diameter and 9.5 mm overall length, catalogued under supplier reference 96977A181. Its comparatively long 9.5 mm bore gives extended guidance to a 4 mm drill, which helps resist deflection and wander as the drill enters the work — useful when hole straightness matters or when drilling materials that encourage drill walking. The head seats on the fixture-plate face as a positive stop against drilling thrust. McMaster-Carr lists its metric press-fit drill bushings as hardened, ground steel so the bore holds size and resists abrasive wear across repeated cycles, and the bushing is installed with a manual or hydraulic press into a plate hole sized for an interference fit.
Key specifications
| Type | Press-fit drill bushing, headed |
|---|---|
| Inside diameter | 4 mm |
| Body outside diameter | 7 mm |
| Overall length | 9.5 mm |
| Material | Hardened, ground steel |
| Installation | Press fit into fixture plate (manual or hydraulic press) |
| Supplier reference | 96977A181 |
Typical applications
The longer bore of this variant suits jigs for deeper or straightness-critical 4 mm holes, including drilling templates for assemblies where the drill needs support over a greater length before reaching the workpiece. It is a typical choice for fixture plates thick enough to accept the 9.5 mm body.
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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