What is 304 Steel – Mocayo Ball Lock Pin
304 Stainless Steel: The Benchmark for Industrial-Grade Corrosion Resistance

As a typical representative of austenitic stainless steel, 304 steel owes its excellent performance to its precisely controlled chemical composition. According to ASTM A276 standards, compliant 304 steel must contain 18–20% chromium (Cr) and 8–10.5% nickel (Ni). This combination allows it to form a dense Cr₂O₃ oxide film in oxidizing environments. Data from Mocayo’s quality lab shows our 304 stainless steel achieves tensile strengths of 520–580 MPa, yield strengths of 220–250 MPa, and elongation rates of ≥40%, fully meeting high-strength application demands. Discover what is 304 steel and how Mocayo ball lock pin offers secure, high-strength connections in demanding environments.

Proven Corrosion Resistance

Our 304 steel materials have passed three critical tests:

• Salt spray test: 1000 hours with no red rust (ASTM B117)

• Intergranular corrosion: Passed per ASTM A262 Practice E

• Acid-alkali immersion: Weight loss <0.1 mg/cm² after 24 hours in 5% HCl

Engineering Challenges in Stainless Steel Fasteners

Fasteners made from stainless steel face specific technical difficulties. The Mocayo engineering team solves them with three core technologies:

• Surface passivation: 20% nitric acid treatment to enhance the oxide film

• Precision thread machining: ISO 4753 standard, tolerance class 6g

• Anti-loosening design: Based on mechanical locking principles

We recommend using 304 steel fasteners in the following environments:

• Food processing: Meets FDA hygiene standards

• Chemical pipelines: Acid and alkali resistance

• Marine equipment: Salt spray corrosion resistance

• Medical devices: Non-toxic, clean surface

Mocayo Ball Lock Pin: Precision Stainless Steel Locking Technology

The Mocayo Ball Lock Pin is engineered using a 304 stainless steel body paired with hardened steel balls (HRC 60–62), perfectly balancing corrosion resistance and mechanical strength. Each Ball Lock Pin is CNC-turned with key tolerances controlled within ±0.01 mm and surface roughness Ra ≤ 0.8 μm. A unique dual-row ball structure provides even radial locking force, preventing stress concentration.

T Handle Quick Release Pin

Recessed Button Quick Release Pin

Push Botton Quick Release Pin

Key Performance Data:

• Static holding force: ≥2000N (actual: 2150–2300N)

• Fatigue life: <10% holding force reduction after 5000 cycles

• Operating temperature: -50°C to 200°C (peak 250°C)

• Corrosion resistance: Passed 96-hour salt spray test (ASTM B117)

Structural Advantages:

• One-piece stainless steel housing with no weld weak points

• Chrome-plated hardened balls for low friction (μ < 0.15)

• Internal spring made of fatigue-resistant 17-7PH stainless steel

• Dust-proof structure meets IP54 protection standard

Comprehensive Technical Support from Mocayo

Each Ball Lock Pin is backed by a full suite of documentation:

• SGS-certified material certificates

• Mechanical property test reports

• Salt spray test results

• Installation instructions

We also offer personalized customization services:

• Adjustable holding force (500–3000N)

• Various installation diameters (Ø6–Ø25mm)

• Surface finishes: passivation or electropolishing

• Custom laser marking upon request

Get in touch with a Mocayo technical consultant today to request your free test samples. Our professional engineers provide complete technical support—from selection to installation—ensuring your equipment benefits from the most reliable fastening solution.