Simple door lock

Buyers should prioritize material durability and mechanical reliability. Look for locks made of SUS 304 stainless steel or solid brass to ensure corrosion resistance. The backset size (typically 60mm or 70mm) must match your market's standard door preparations. Additionally, verify the cycle test rating; a high-quality simple lock should withstand at least 200,000 to 500,000 cycles to ensure long-term functionality in residential or commercial settings.

For the North American market, ensure products meet ANSI/BHMA Grade 2 or 3 standards for security and durability. For European markets, EN 12209 is the relevant benchmark. If the locks are intended for fire-rated doors, they must possess a UL 10C (3-hour fire rating) or CE marking to meet strict building safety codes. Always request third-party lab test reports to validate these claims.

Security is determined by the cylinder design and bolt strength. Prefer cylinders with anti-pick pins and anti-drill components. The deadbolt throw should be at least 1 inch (25mm) to provide maximum resistance against forced entry. For simple lever or knob locks, ensure they feature a deadlocking plunger to prevent 'shimming' or 'loiding' of the latch.

Professional suppliers on Made-in-China.com usually offer OEM/ODM services, including custom finishes (e.g., Satin Nickel, Matte Black, or Polished Chrome), Keyed-Alike (KA) or Master Key (MK) systems, and laser-engraved branding on the lock body or keys. You can also request customized retail packaging to align with your brand identity.

The primary risks include material substitution (e.g., using zinc alloy instead of promised stainless steel) and dimensional inaccuracies. To mitigate this, use Trade Resources and Audited Suppliers on Made-in-China.com. Always request a pre-shipment inspection (PSI) to verify that the weight, finish, and mechanical operation match the approved gold sample.

Door hardware is a volume-driven industry. You can often secure a 10-15% discount by increasing the order to a full container load (FCL). If you are a startup, negotiate a lower MOQ for standard finishes (like Satin Stainless) while accepting higher MOQs for specialized colors. Always clarify if the quoted price includes molds or tooling charges for custom designs.

Due to the high density and weight of metal locks, Sea Freight (LCL or FCL) is the most economical choice. For urgent samples, International Express (DHL/FedEx) is preferred, but ensure the supplier provides proper protective packaging (double-corrugated boxes and internal foam) to prevent scratches on the lock surfaces during transit.

Utilize Secured Payment services offered by Made-in-China.com to ensure funds are only released after you confirm receipt of goods. Avoid direct wire transfers to private accounts. Ensure the Proforma Invoice (PI) clearly states the technical specifications, lead time, and warranty terms (ideally 2-5 years for mechanical parts) to provide legal recourse in case of disputes.