Karna International

Product family

Washers

Flat washers are our specialty, from M4 to M52 (3/16" to 2"), alongside lock, spring, tooth, tab, structural and fender washers and stamped washers manufactured to drawing. They are pressed in alloy, carbon and stainless steel, copper and brass on our 45 press machines, with compound tooling and feeder systems for flat washers. They can be hardened and tempered, and finishes include zinc plating, hot-dip and mechanical galvanizing and nylon coating.

Call +1 (415) 725-9165 or WhatsApp, Mon–Sat, 9:30–18:30 IST

Standards
ANSI, SAE, USS, ASTM, JIS, ISO, DIN 125 (Forms A, B, C, E, F, G), DIN 126, DIN 127, DIN 137, DIN 93, DIN 433, DIN 434, DIN 440 R, DIN 443, DIN 522, DIN 6340, DIN 6796, DIN 6797, DIN 6798, DIN 6916, DIN 7349, DIN 7980, DIN 9021, ISO 7093-2, ASTM F436, NF E25-513 (M, L, LL), BS 4320 Form C/D
Materials
Alloy steel, Carbon steel, Stainless steel, Copper, Brass, Aluminium, Copper, aluminium
Finishes, done in-house
  • Hot-dip galvanizing
  • Zinc plating in white, blue, black, yellow or green, all with trivalent (Cr3+) passivation — hexavalent-chromium-free
  • Black phosphating
  • Autoblack
  • Magni coating
  • Gleitmo wax coating
  • GEOMET coating
  • Powder coating
Other finishes
Mechanical galvanized, Nylon coated

Product lines

36 lines

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Washers
ProductSizesMaterialQuote
DTI washerNot in the printed catalogue, but we supply it.
M12–M36 / 1/2"–1-1/2"
Flat washer
M4–M52 / 3/16"–2"
Taper washer
Triangle washer
Finishing washer
Aluminium washer
M4–M50 / 3/16"–2"
Thin washer
Internal washer
Belleville washer
Automotive washerSealing washer.
M3–M72 / 1/8"–3"
Copper, aluminium
Brass washer
M4–M24 / 3/16"–1"
Spherical washer
Tab washer
Thrust washer
Structural washer
M10–M24 / 3/8"–1"
Quick locking washer
Tension control washer
Hexagonal washer
Cup washer
Square taper washer
D-washer
External internal tab washer
Square hole washer
Fender washer
Square washer
M6–M20 / 1/4"–3/4"
Dome washer
Beveled washer
Torque washer
Bushing steel washer
Conical washer
External tooth lock washer
M6–M24 / 1/4"–1"
Internal tooth lock washerNot in the printed catalogue, but we supply it.
M6–M24 / 1/4"–1"
Curved washer
C-washer
Mud repair (penny) washerNot in the printed catalogue, but we supply it.
M4–M12 / 3/16"–1/2"
Spring washerSquare and rectangular section.Not in the printed catalogue, but we supply it.
M6–M20 / 3/16"–3/4"

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Call +1 (415) 725-9165 or WhatsApp, Mon–Sat, 9:30–18:30 IST