Production Criteria for Automotive & Defense Parts
- 77 Teknik
- Jul 27
- 2 min read
Updated: Aug 18
Precision Standards & Processes for High Reliability Applications
Why Automotive & Defense Parts Require Stringent Criteria
In industries where safety, reliability, and performance are non-negotiable, such as automotive and defense, precision parts must meet the highest standards. From crash worthy components in vehicles to critical aerospace or military hardware, each part’s production process must be tightly controlled to ensure quality, traceability, and compliance.
At 77 Teknik, we specialize in manufacturing components for these sectors, following ISO, PPAP, FMEA protocols and tailored material specifications.
Key Production Criteria for Automotive & Defense Parts
1. Tolerances & Dimensional Accuracy
Automotive and defense parts often require tolerances of ± 0.01 to ± 0.005 mm, depending on function.
Straightness, flatness, and geometric tolerances are critical to ensure proper fit in assemblies.
Use of CMM (Coordinate Measuring Machines), optical comparators, and Go/No-Go fixtures for precise inspection.
2. Material Quality & Traceability
Use of aerospace-grade materials: 17‑4 PH stainless steel, Ti‑6Al‑4V, high‑strength aluminum alloys (7075, 6061‑T6).
Detailed material certifications, batch traceability, and MRI barcoding for compliance.
Close supplier collaboration ensures consistent material properties and minimal variation.
3. Surface Finish, Strength & Wear Resistance
Surface roughness requirements: Ra 0.4 µm or better in many cases to minimize fatigue initiation.
Performance-critical parts may include shot peening, anodizing, passivation, or plating.
Design-for-durability includes heat treatment, stress relief, and surface integrity analysis.
4. Quality Systems & Certification
ISO 9001, IATF 16949 (automotive), AS9100 (aerospace/defense) compliance is mandatory.
Implementation of PPAP (Production Part Approval Process) and FMEA to ensure risk mitigation.
Use of control plans, First Article Inspection (FAI), and traceable documentation.
5. Testing, Inspection & Validation
In-process monitoring via statistical process control (SPC) and torque/weld verification.
Environmental and fatigue testing (e.g., vibration, thermal cycling, salt spray) as required.
Final certification reports, dimensional inspection, material testing, and functional validation.
At a Glance Criteria Table
Criteria | Automotive Requirements | Defense / Aerospace Standards |
Tolerances | ± 0.01 – 0.005 mm | ± 0.005 mm or tighter |
Materials | 7075, 6061‑T6 aluminum, 17‑4 PH SS | Ti‑6Al‑4V, Inconel, high‑grade SS |
Surface Finish | Ra ≤ 0.8 µm | Ra ≤ 0.4 µm |
Certifications | IATF 16949, PPAP, SPC | AS9100, FAI, traceability |
Post treatment | Anodizing, plating, peening | Heat treatment, chemical finishes |
Testing | Torque/test cycles, environmental | Vibration, fatigue, thermal exposure |
77 Teknik’s Expertise for These Sectors
At 77 Teknik, our production workflows are aligned with automotive and defense sector protocols:
ISO‑compliant production with certified equipment
Dedicated inspection labs with CMM, optical comparators, surface testers
Experienced operators trained in PPAP, FMEA, and industry audits
Material traceability from receipt through shipment
Manufacturing parts for the automotive and defense sectors demands unmatched precision, traceability, and process control. Every dimension, surface, and material must comply with strict standards according to production criteria for automotive & defense parts.
At 77 Teknik, we deliver components that meet these challenges balancing performance, quality, and regulatory compliance from start to finish.
Ready for Your Sector-Specific Project?
Partner with experts who understand industry protocols and deliver precision parts on time.
Contact 77 Teknik to discuss your next project.
