Workholding Fixtures
Machining fixtures that locate on the casting or forging datum, repeatable to 0.02 mm.
Fixtures built around the datum the part will be inspected from, not the one that is convenient to clamp. Repeatability is measured on a run of parts, not by checking the fixture once on the bench.
How we make it: Custom CNC parts service →
4–6 weeks
1 piece
ISO 9001:2015 · AS9100D
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Locating repeatability | 0.02 | mm |
| Datum flatness | 0.01 | mm |
| Clamp force | To 12 | kN |
| Tombstone faces | Ground, square 0.02 | mm |
| CMM report | Per fixture | included |
| Part marking | Laser etched ID | - |
Available Materials
- Aluminium 7075-T651
- Steel S355 (frames)
- Tool steel A2 (locators)
- Bronze C932 (bushings)
- Cast aluminium tooling plate
Typical Applications
- First-operation machining
- Second-operation location
- 5-axis tombstones
- Welding positioners
- Inspection holding
Surface Finishes
- Anodised
- Hardened locators
- Ground datum faces
- Painted frames
- Laser marked ID
Industries Served
- Aerospace
- Automotive & EV
- Industrial Equipment
- Medical
- Energy & Oil & Gas
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Datum flatness at 0.01 mm is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Material
- The first material listed, Tool Steel A2 (air hardening), rates 5/10 on our machinability scale at 58–60 HRC hardened · ~217 HB annealed. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- First article inspection to AS9102, because this family carries an aerospace or automotive certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- What makes a fixture repeatable rather than just accurate?
- Locators that seat the same way every time, which usually means hardened and ground contacts rather than the raw machined surface. Accuracy you can measure once; repeatability is what keeps the parts good on part 500.
- Should the fixture locate on the casting or the machined face?
- On the datum the drawing and the inspection use. Locate somewhere else and the fixture is accurate but the parts drift relative to the drawing.
Related part families
Inspection Fixtures & Gauges
CMM fixtures, check gauges and go/no-go tooling built from your CAD and certified dimensionally.
Drill Jigs & Bushings
Plate and box jigs with hardened bushings, locating holes to ±0.05 mm on the production floor.
Machine Tooling & Inserts
Form tools, bushings and production inserts, hardened and ground to hold size across a long run.