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DIN 6797 DIN 6798 Reusable Tooth Lock Washer Star Washer M3-M20

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DIN 6797 DIN 6798 Reusable Tooth Lock Washer Star Washer M3-M20

Type : Tooth Lock Washer / Star Washer

Model Number : DIN6797-6798

Size Range : M3 to M20 metric, #4 to 3/4 in imperial

Application : Pumps, compressors, motors, automotive, electrical cabinets

Function : Teeth bite into bearing surface and bolt head for mechanical locking, anti-vibration without thread locker

Place of Origin : China

Material : Spring Steel, SS304 / SS316 Stainless Steel

Payment Terms : T/T,L/C,Western Union,PayPal

Standard : DIN 6797 (External Tooth), DIN 6798 (Internal Tooth), ASME B18.21.1

Supply Ability : 2000000 Pieces per Month

Thickness : 0.3 mm to 1.5 mm (ultra-thin stamped)

Packaging Details : Export carton on fumigated wooden pallet, or as customer requirement

Surface Finish : Zinc Plated, Black Oxide, Plain, Mechanical Zinc

Brand Name : FLRS or OEM

MOQ : 10000 Pieces

Feature : Removable and reusable without damaging threads

Certification : ISO 9001

Price : USD 0.005-0.08 / Piece

Delivery Time : 7-15 days for stock, 20-30 days for bulk production

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Reusable Star Washers for Vibration-Proof Fastening — DIN 6797 & DIN 6798

These star washers (tooth lock washers) secure threaded joints purely by mechanical action: the serrated teeth bite into the mating surface and the bolt head, so the fastener resists vibration loosening without any thread-locking adhesive. Because the teeth do not cut into the thread itself, the washer can be removed and refitted again and again without damaging the bolt.

Maintenance-Friendly Locking, No Adhesive Required

Unlike chemical thread lockers, these washers leave no residue and can be reused through repeated service intervals. Supplied as both external tooth DIN 6797 and internal tooth DIN 6798 types, and additionally to ASME B18.21.1, they cover metric and imperial assemblies from a single source.

Reusable: remove and reinstall without thread damage. Clean: no adhesive, no curing time. Versatile: external and internal teeth plus US standard.
Specification
ItemDetail
StandardsDIN 6797 (external tooth), DIN 6798 (internal tooth), ASME B18.21.1
Product typeStar washer / tooth lock washer
MaterialSpring steel; SS304 / SS316 stainless on request
Thickness0.3 mm - 1.5 mm (thin stamped)
SizesM3 - M20 metric; #4 - 3/4 in imperial
FinishZinc plated, mechanical zinc, black oxide or plain
Locking methodMechanical (no thread locker needed)
ReusabilityRemovable and reusable without thread damage
Choosing Between External and Internal Teeth
TypeStandardWhere it works best
External toothDIN 6797Small screws and softer surfaces; teeth grip the outside of the bearing face
Internal toothDIN 6798Larger bolts and hardened faces where external teeth would foul the head
Where They Are Used

Typical installations include electric motors, pumps, compressors, automotive assemblies and electrical cabinets — any joint where continuous vibration would otherwise work a bolted connection loose and where a maintainable, adhesive-free solution is preferred.

Ordering & Support

Tell us your size, standard and finish, and we will confirm bulk pricing, samples and OEM marking within 24 hours.


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