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.
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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