A useful custom hardware quote depends on more than product size and quantity. For door hardware, the manufacturer also needs material, structure, finish, performance standard, fitting details, packaging, target market, and expected order volume. Missing information can make the first quotation inaccurate and create changes later during sampling or mass production.
The first requirement is a clear product definition. Buyers should provide a drawing, CAD file, technical specification, or physical sample whenever possible.
For custom door handles, important dimensions may include handle diameter, projection, rose or plate size, spindle size, center-to-center distance, door thickness, and keyhole position.
For example, HANGFAT's Stainless Steel U Form EN Standard Lever Handle supports spindle sizes of 7 mm, 8 mm, 8.5 mm and 9 mm, center distances of 70 mm, 72 mm, 85 mm and 92 mm, and door thicknesses from 38 mm to 75 mm depending on the fitting configuration.
These details directly influence tooling, accessories and assembly.
Material is another major quotation factor. HANGFAT offers SUS304 and SUS316 stainless steel for selected lever handle products. Available finishes include satin, polished, PVD gold, PVD black, electrophoresis black and powder coating.
A quotation request should therefore specify:
Material grade
Surface finish
Required color
Indoor or outdoor application
Corrosion requirement
Changing from SUS304 to SUS316 or adding a more demanding finish can affect material cost and manufacturing steps.
A professional OEM hardware manufacturer also needs to know where the product will be sold and what standards must be met.
Selected HANGFAT lever handles can be configured to EN 1906 Grade 3 or Grade 4, with durability reaching 200,000 cycles. Corrosion performance under EN 1670 can reach Grade 3 at 96 hours, Grade 4 at 240 hours or Grade 5 at 480 hours. Security testing can reach 2500 N for applicable configurations.
These requirements should be included before quotation because material, internal structure and testing may need to change.
Bulk supply pricing depends heavily on volume. The manufacturer should know the expected sample quantity, first production order and estimated recurring volume.
HANGFAT has provided OEM and ODM manufacturing since establishing its factory operations and states a monthly production capacity of approximately 800,000 pairs or sets. Its product range includes handles, Locksets, Hinges and related architectural hardware.
For larger projects, volume information helps us plan raw materials, production lines, packaging and delivery schedules more accurately.
Before requesting a quotation, confirm the following:
| Information | Why It Matters |
|---|---|
| Drawing or sample | Defines structure |
| Material grade | Affects cost and corrosion resistance |
| Finish | Determines processing requirements |
| Door and lock details | Ensures compatibility |
| Performance standard | Defines testing level |
| Order quantity | Affects production planning |
| Packaging | Influences unit cost |
| Destination market | Determines compliance |
A trader may collect specifications and pass them to another factory. A direct custom hardware manufacturer can evaluate whether the requested design can actually be formed, welded, polished, assembled and tested efficiently.
HANGFAT integrates product development and manufacturing and uses equipment including 3D automatic welding and automatic polishing machines to improve production consistency. The company also applies raw-material inspection and material distribution controls before production.
The more complete the initial information, the more meaningful the quotation becomes. A clear specification allows the manufacturer to calculate not only unit price, but also tooling, testing, production feasibility, bulk supply planning and export compliance before the OEM or ODM project moves into sampling.
