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Other Motor Vehicle Parts Manufacturing

NAICS 336390 · Transportation Equipment Manufacturing6 · SBA size standard: 1,000 employees

Other Motor Vehicle Parts Manufacturing shops produce, assemble and finish components such as brake assemblies, exhaust systems, radiators, suspension parts and interior trim. For a shop that receives weekly customer orders for custom or replacement parts, the specialists convert orders into production schedules, raw-material and component purchase lists, routing sheets for each work cell, quality-check sequences and shipping labels. Tooling, fixtures, weld schedules, paint specs and regulatory labeling stay with the machinists, welders and assemblers.

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What makes this business different

  • Customer orders that mix repeat OEM parts with one-off or low-volume custom fabrications requiring exact material callouts and tolerances
  • Multi-step production sequences across machining, welding, painting, assembly and final test stations with shared equipment
  • Raw material and purchased-part inventory managed by heat number, lot and shelf life, with reorder points tied to production schedules
  • First-article inspection, dimensional verification, torque logs and material traceability paperwork required per job
  • Tooling and fixture maintenance schedules, calibration records for gauges and presses, and preventive-maintenance logs for CNC machines
  • Packaging, labeling and barcoding that meets customer and DOT requirements before shipment
  • Seasonal spikes in orders for aftermarket exhaust, brakes and radiators tied to regional weather and vehicle-repair cycles

Specialist bots

  • a worker at a metal workbench reviewing printed drawings and order sheets next to a row of machined brackets

    Order Reviewer

    Convert incoming customer orders into accurate job packets with routing and quality requirements.

    Works in: Ambitious Docs, Ambitious Tasks, Contract Analyzer · Workflows: Order review and job creation

    Automates

    • Reads purchase orders and extracts part numbers, quantities and due dates
    • Compares requirements against standard routings and flags exceptions
    • Builds the job traveler and attaches drawings and specifications
    • Drafts order acknowledgment

    Stops for a person

    • A machinist or engineer confirms any nonstandard tolerances or materials
    • The owner approves all due-date commitments before acknowledgment is sent
  • a worker scanning bar-coded bins of steel tubing and aluminum sheet in a stockroom with inventory sheets on a clipboard

    Materials Planner

    Explode production jobs into accurate raw material and purchased-part requirements while maintaining traceability.

    Works in: Ambitious Sheets, Ambitious Tasks · Workflows: Material and component planning

    Automates

    • Calculates material needs from bills of materials
    • Subtracts current inventory by lot and heat number
    • Generates purchase requisitions sorted by supplier and lead time
    • Tracks minimum stock levels for common fasteners and bar stock

    Stops for a person

    • Purchasing decisions and spending are approved by the owner
    • Any substitution of material grade is confirmed by engineering
  • a worker updating a large wall-mounted scheduling board with magnetic cards showing jobs and machine assignments in a fabrication shop

    Production Scheduler

    Build daily dispatch lists and assign jobs to machines and operators while respecting setup and capacity constraints.

    Works in: Ambitious Tasks, Process Optimizer · Workflows: Production scheduling and dispatching

    Automates

    • Sequences jobs by due date and required work cells
    • Factors setup and run times into the schedule
    • Creates digital traveler packets for each station
    • Adjusts the board when jobs finish early or late

    Stops for a person

    • Lead machinists review and may reprioritize the daily list
    • The owner sets overall capacity and overtime rules
  • a worker using a digital caliper to measure a welded exhaust flange on a granite surface plate with inspection sheets nearby

    Quality Clerk

    Capture dimensional, torque and visual inspection data against each job's requirements and maintain traceability records.

    Works in: Ambitious Tasks, Ambitious Docs, Ambitious Sheets · Workflows: In-process and final quality checks

    Automates

    • Generates job-specific inspection checklists
    • Logs measurements and flags out-of-tolerance results
    • Attaches material certificates and weld logs to the job file
    • Prepares final inspection packets for shipment

    Stops for a person

    • Inspectors personally perform and sign off on all critical measurements
    • Disposition of nonconforming parts is decided by the owner or engineer
  • a worker organizing precision cutting tools and fixtures on a shadow-board rack inside a clean tool crib

    Tooling and Maintenance Coordinator

    Track tooling life, schedule preventive maintenance and calibration, and maintain fixture drawings.

    Works in: Ambitious Sheets, Ambitious Tasks, Process Optimizer · Workflows: Tooling, fixture and equipment maintenance

    Automates

    • Calculates remaining tool life based on cycles run
    • Creates maintenance tasks for machines and fixtures
    • Schedules gauge and press calibration before due dates
    • Organizes revision-controlled tooling drawings

    Stops for a person

    • Maintenance and calibration work is performed and signed by qualified technicians
    • The owner approves purchase of new tooling and fixtures
  • a worker placing finished brake caliper assemblies into a cardboard box with foam inserts and printed labels on a packing table

    Shipping Coordinator

    Prepare accurate labels, packing lists and shipping documents once parts pass final inspection.

    Works in: Ambitious Tasks, Ambitious Docs · Workflows: Final packaging, labeling and shipment

    Automates

    • Generates customer-specific barcoded labels and packing slips
    • Selects packaging type and adds required markings
    • Creates shipment tasks and carrier notifications
    • Closes completed jobs and updates inventory records

    Stops for a person

    • A person verifies packaging and labeling before parts leave the building
    • The owner approves any expedited freight charges
  • a worker filing printed material test certificates and inspection reports into labeled folders inside a metal storage cabinet

    Compliance and Records Clerk

    Organize material certifications, inspection reports, maintenance logs and renewal reminders for customer and regulatory review.

    Works in: Ambitious Docs, Ambitious Sheets, Ambitious Tasks · Workflows: Regulatory and customer record keeping

    Automates

    • Compiles job-specific quality and traceability files
    • Tracks calibration, permit and certification due dates
    • Generates summary reports of scrap and on-time performance
    • Prepares organized folders for audits

    Stops for a person

    • The owner confirms which requirements apply to each product or customer
    • People review and approve all records before they are sent or filed

Workflows

Order review and job creation

Starts when: New customer purchase order arrives by email or portal

  1. Parse part numbers, quantities, due dates and any special material or tolerance notes
  2. Check against open capacity on required work cells and flag conflicts
  3. Create a job packet containing drawing, routing, bill of materials and quality requirements
  4. Draft acknowledgment with confirmed ship date
  5. Assign unique job traveler number and attach to the production board

Watch for: Exact match of customer-specified material grades and finishes; Any deviation from standard routing must be approved before release

Material and component planning

Starts when: After job packet is approved and weekly for forecast

  1. Explode bill of materials for all released jobs
  2. Subtract current raw stock and on-order quantities using lot traceability
  3. Generate purchase requisitions for steel, aluminum, fasteners and subcontracted items
  4. Update reorder points for high-turnover items like brake pads and hose kits
  5. Flag long-lead items that will affect the master schedule

Watch for: Material must be ordered to certified mill specs with heat numbers; Shelf-life limited items such as adhesives and paints cannot be overstocked

Production scheduling and dispatching

Starts when: Each morning and after any job completion

  1. Load jobs into the master schedule by due date and work-cell priority
  2. Assign jobs to specific machines and operators based on setup and run times
  3. Generate daily dispatch lists and digital traveler packets for each station
  4. Adjust schedule when tooling or material is unavailable
  5. Notify downstream cells of incoming work

Watch for: Setup times vary significantly by part family; Shared CNC and weld stations create sequencing constraints

In-process and final quality checks

Starts when: At completion of each defined operation and before shipment

  1. Pull the job-specific inspection checklist and dimensional requirements
  2. Record first-article, in-process and final measurements against tolerances
  3. Log torque values, weld inspections and paint thickness where required
  4. Flag nonconforming parts and initiate rework or scrap disposition
  5. Attach completed inspection records to the job packet

Watch for: Traceability to raw material heat numbers and welder qualifications; Certain customers require signed-off documentation

Tooling, fixture and equipment maintenance

Starts when: On scheduled intervals and after each production run

  1. Track usage hours or cycles for dies, fixtures and cutting tools
  2. Generate preventive-maintenance tasks for CNC machines, presses and paint booths
  3. Schedule calibration of calipers, micrometers and torque wrenches
  4. Draft purchase requests for replacement tooling before stock-out
  5. Maintain revision-controlled drawings for all shop fixtures

Watch for: Worn tooling can cause out-of-tolerance parts and must be caught early; Calibration records must be available for audits

Final packaging, labeling and shipment

Starts when: After final quality approval

  1. Generate customer-specific labels, barcodes and packing lists
  2. Select appropriate packaging and corrosion protection per part type
  3. Print required labels for exhaust and brake components when needed
  4. Create shipment task and notify carrier
  5. Close job in the system and update inventory

Watch for: Some parts require serialized tracking through the supply chain; Returnable dunnage must be logged and scheduled for pickup

Regulatory and customer record keeping

Starts when: End of each production day and on fixed calendar dates

  1. Compile material certificates, inspection reports and welder logs per job
  2. Update equipment maintenance and calibration status sheets
  3. Track renewal dates for environmental permits, waste manifests and certifications
  4. Organize records for customer audits or spot checks
  5. Draft summary reports of scrap, rework and on-time delivery

Watch for: Record retention periods vary by customer and part type; The owner must confirm which regulatory requirements apply to each product line

Bot templates for this industry

Source: U.S. Small Business Administration, Office of Size Standards, Table of Small Business Size Standards Matched to North American Industry Classification System Codes, version March 2023 (effective 2023-03-17, NAICS 2022). Size standards are shown for reference only.