What engineering needs
Prepare the drawing package before quotation
The checklist below is procurement guidance, not a universal tolerance promise. Final manufacturability depends on the released drawing, material, heat treatment, geometry, datum structure, production volume, inspection plan, and any customer-specific standard or reporting rule.
01
Drawing and revision control
- Dimensioned PDF plus STEP when available
- Drawing number, revision, units and release date
- Governing language, standard and edition
- Datum reference frame and geometric-tolerance callouts
- Functional interfaces that affect fit or assembly
02
Material and blank condition
- Material grade and governing specification
- Supply condition and certification requirements
- Bar, tube, forged, cold-formed, or customer-supplied blank
- Cleanliness, hardenability, or traceability requirements
- Any restrictions on equivalent grades
03
Heat treatment and surface condition
- Required process and final condition
- Hardness locations and verification method
- Case-depth definition, masking, or soft zones
- Dimensions that apply before or after treatment
- Coating, plating, cleanliness, or corrosion protection
04
Functional shaft features
- Journals, bearing seats, shoulders and seal diameters
- Bores, threads, tapers, grooves, cross holes and faces
- Internal or external splines and gear teeth
- Centers, pilot diameters and assembly interfaces
- Required relationships between datums and features
05
Tolerance and surface-finish inputs
- Nominal dimensions and total tolerance bands
- Geometric tolerances with referenced datums
- Surface-roughness parameter and evaluation rule
- Required measurement method, gauge, or master
- Sampling frequency and reporting format
06
Gear and spline definition
- Governing standard and edition
- Module or diametral pitch, pressure and helix angles
- Tooth count, profile shift, modifications and grade
- Required individual deviations or composite checks
- Spline fit, class, gauge and analysis requirements
07
Inspection and quality records
- Dimensional inspection report
- Material and heat-treatment certificates
- Hardness, case-depth, surface, or contour records
- Gear or spline analysis report
- First article, PPAP, control plan, or customer forms when contractually required
08
Volume, delivery and packaging
- Prototype, launch and serial-production quantities
- Estimated annual demand and expected program life
- Requested delivery date and receiving location
- Packaging, rust prevention, labeling and traceability
- Customer-supplied tooling, gauges, or returnable packaging
Before you send the RFQ
Make open requirements visible
If a material, treatment, tolerance, inspection method, or delivery condition is still provisional, label it clearly. This is more useful than leaving it unstated because the open item can be evaluated during drawing review. Resolve drawing and inspection questions
Drawing-based feasibility review
Ready for a feasibility review?
Send your drawing, material specification and estimated quantity. Engineering attachments can also be sent through the Email RFQ and Drawings route on the contact page.
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