HANDA. NINGBO

Part group 03 / 05 · Ningbo, China

Custom nuts and washers,
mixed materials in one lot.

Hex nuts, flange nuts, nyloc, cap and coupling nuts. Flat, spring, lock, fender and sealing washers. Four materials in one container is the normal case here, not the exception.

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Specification

Nuts & Washers to drawing

Nuts
Hex, flange, nyloc, cap, coupling, square, wing, and special shapes to drawing. M3 to M24 standard.
Washers
Flat, spring, lock, fender, sealing, square and tab washers. Inner diameter, outer diameter and thickness held per drawing.
Materials
Carbon steel, stainless A2 (304) / A4 (316), brass, aluminium, copper. Mixed materials can be packed by size in one lot.
Dimensions
Flat washer: inner diameter d, outer diameter D, thickness t, all read from your list. Spring washer: square section per DIN 127 or your own drawing.
Finish
Zinc, nickel, black oxide, Dacromet, plain, passivation. Brass and aluminium can be supplied raw or clear passivated.

Every dimension is taken from your drawing or sample. Where this page and your drawing disagree, your drawing wins.

Where these parts go

Applications

Panels, frames, pipe supports and instrument assemblies where a mixed kit of nuts and washers ships as one lot.

Screws

Machine, self-tapping, self-drilling, set and security screws to drawing.

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Bolts

Hex, socket, flange, carriage and special-head bolts, class 8.8 to 12.9.

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Turned Parts

Pins, shafts, spacers, bosses and special components from bar stock.

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Threaded Rods

Full-thread rod, double-end and tap-end studs, cut to length.

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Questions buyers ask

01
Can I mix four materials in one order?
Yes. That is a normal order here. Send one list: size, material, finish, quantity per size. We produce by material, then pack by size so your warehouse can issue a kit without sorting.
02
Do you hold the washer thickness tolerance?
Yes. Thickness is the dimension other suppliers most often ignore, and coating adds to it. We measure after plating, and the inspection sheet reports the coated thickness.
03
Which washer standard do you follow?
DIN 125 for flat washers, DIN 127 for spring washers, DIN 6796 for conical spring washers, or your own drawing. Where the standard conflicts with your drawing, the drawing wins.
04
Can nuts be supplied with a nylon insert?
Yes. Nyloc style nuts with a standard nylon insert, in steel and stainless. The insert temperature limits are stated in the datasheet we send with the quote.
05
Do you sort and count the parts?
Yes. Parts are counted by weight against a counted sample, then bagged per size. Carton labels carry size, material, quantity and lot number.
06
What is the HS code for these parts?
Steel washers fall under 7318.22, brass washers under 7415.21, aluminium washers under 7616.10, and steel nuts under 7318.16. The code goes on the invoice so your broker is not guessing.

Next step

Send one drawing.
Get a costed sheet.

Drawing or sample, material, quantity, and the destination port. We reply within one working day with unit price, tooling, lead time and shipping.

WhatsApp +86 150 5745 4081 yulonghua50@gmail.com RFQ form