TVS Chamfered Washers, DIN EN 14399-6 – M12 to M36, hardness 300 to 370 HV

TVS Sundram Fasteners Chamfered Washers, DIN EN 14399-6 are hardened washers with a chamfer on one face, made by Sundram Fasteners Limited to DIN EN 14399-6, for bolt sizes M12 to M36, hardened to 300 to 370 HV, supplied in zinc phosphate and 4 plated or coated finishes (listed below). They are the washers for EN 14399 structural bolting (HV / HR sets and tension control bolts): the chamfer clears the radius under the bolt head, and the hardness lets the washer carry the full preload of a 10.9 bolt without embedding.

This item is supplied at a price on request; tell us the sizes, hardness and finish you need and we will quote.

Jai Enterprises is an authorised distributor of TVS Sundram Fasteners high tensile fasteners and supplies them from Bhilai and Raipur all over Chhattisgarh - Bhilai, Raipur, Durg, Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India.

Is this the right one for you?

Check these three things before you order:

• Your bolt size is within M12 to M36.
• You want a chamfered washer for EN 14399 structural bolting; spring, tab and serrated washers are not in this range.
• You are using structural bolting to EN 14399 (HV or HR sets, or tension control bolts) and need the chamfered washer that goes under the bolt head.

At a glance

• Brand: TVS Sundram Fasteners (Sundram Fasteners Limited, TVS group)
• Product: Chamfered Washers, DIN EN 14399-6
• Standard: DIN EN 14399-6
• Sizes: M12 to M36
• Hardness: 300 to 370 HV
• Material: Steel
• Surface finish: zinc phosphate, trivalent iridescent, trivalent white, hot dip galvanised and zinc flake coating (Geomet / Magni / Delta)
• Price: price on request - tell us the sizes, hardness and finish
• Supplied by: Jai Enterprises, Bhilai and Raipur - to every district of Chhattisgarh and across India, +91 9340081159

Specifications and dimensions

• Standard: DIN EN 14399-6
• Material: steel, hardened and tempered to the stated hardness
• Hardness: 300 to 370 HV
• Surface finish options: zinc phosphate, trivalent iridescent, trivalent white, hot dip galvanised and zinc flake coating (Geomet / Magni / Delta)
• M12: inner diameter 13.00 to 13.27 mm, outer diameter 23.48 to 24.00 mm, thickness 3.00 mm nominal (max 3.30)
• M14: inner diameter 15.00 to 15.27 mm, outer diameter 27.48 to 28.00 mm, thickness 3.00 mm nominal (max 3.30)
• M16: inner diameter 17.00 to 17.27 mm, outer diameter 29.48 to 30.00 mm, thickness 4.00 mm nominal (max 4.30)
• M18: inner diameter 19.00 to 19.33 mm, outer diameter 33.38 to 34.00 mm, thickness 4.00 mm nominal (max 4.30)
• M20: inner diameter 21.00 to 21.33 mm, outer diameter 36.38 to 37.00 mm, thickness 4.00 mm nominal (max 4.30)
• M22: inner diameter 23.00 to 23.33 mm, outer diameter 38.38 to 39.00 mm, thickness 4.00 mm nominal (max 4.30)
• M24: inner diameter 25.00 to 25.33 mm, outer diameter 43.38 to 44.00 mm, thickness 4.00 mm nominal (max 4.30)
• M27: inner diameter 28.00 to 28.52 mm, outer diameter 49.00 to 50.00 mm, thickness 5.00 mm nominal (max 5.60)
• M30: inner diameter 31.00 to 31.62 mm, outer diameter 54.80 to 56.00 mm, thickness 5.00 mm nominal (max 5.60)
• M36: inner diameter 37.00 to 37.62 mm, outer diameter 64.80 to 66.00 mm, thickness 6.00 mm nominal (max 6.60)
• Source: SFL's technical product catalogue (September 2026 edition) and SFL's digital product catalogue; dimensions in mm

Why choose TVS Sundram Fasteners

• Made by Sundram Fasteners Limited, a TVS group company making high tensile fasteners since 1966: first Indian company with ISO 9000, IATF 16949:2016 certified, Deming Prize 2018 for 17 plants.
• Every lot is backed by a BIS, NABL and ISO/IEC 17025 certified laboratory - tensile, fatigue, torque-tension, salt spray and coating thickness testing - as described in SFL's technical product catalogue (September 2026 edition).
• Made to a named standard - DIN EN 14399-6 - with the dimensions published in SFL's technical catalogue, so parts interchange with any other maker's to the same standard.
• A choice of finishes - zinc phosphate, trivalent iridescent, trivalent white, hot dip galvanised and zinc flake coating (Geomet / Magni / Delta) - from plain indoor use to hot dip galvanised and zinc flake coating for outdoor and corrosive service.

How to choose and fit

1. Choose the washer for the bolt size; use it under the nut and, where the design or the set standard says so, under the bolt head as well.
2. Use it only with the bolting system it belongs to: the IS 6649 washer with IS 3757 / IS 6623 HSFG sets, the EN 14399-6 and DASt 021 washers with EN 14399 HV / HR and tension control sets.
3. Fit the washer under whichever element turns during tightening; a chamfered washer goes with its chamfer towards the bolt head under the head, or towards the nut under the nut, so that it clears the under-head radius.

Where it is used

• steel bridges, flyovers and plant structures bolted with EN 14399 HV / HR and tension control sets
• transmission towers and substations
• pre-engineered buildings and crane girders

Other versions and series

• TVS Sundram Fasteners Plain Washers, ISO 7089 (200 to 300 HV) - M4 to M64, price on request
• TVS Sundram Fasteners Plain Washers, ISO 7089 (300 to 370 HV) - M4 to M64, price on request
• TVS Sundram Fasteners Plain Washers Large Series, ISO 7093-1 (200 to 300 HV) - M4 to M36, price on request
• TVS Sundram Fasteners Plain Washers Large Series, ISO 7093-1 (300 to 370 HV) - M4 to M36, price on request
• TVS Sundram Fasteners Plain Hole Circular Washers, IS 6649 - M16 to M36, price on request
• TVS Sundram Fasteners Chamfered Washers, DASt 021 - M39 to M72, price on request

Related products

• TVS Sundram Fasteners Hex Head Bolts, ISO 4014 metric - the bolts these washers go under
• TVS Sundram Fasteners Hex Nuts, ISO 4032 metric - the nuts they seat
• TVS Sundram Fasteners HSFG Bolts, IS 3757 - HSFG bolts
• TVS Sundram Fasteners Tension Control Bolt Assembly - tension control bolts

Frequently asked questions

What is the price of Chamfered Washers, DIN EN 14399-6?

It is supplied at a price on request. Send the sizes, grade, finish and quantity to Jai Enterprises on +91 9340081159 and we will quote from the current SFL list.

Why a chamfered washer?

EN 14399-6 chamfered washers are hardened to 300 to 370 HV to carry the preload of a 10.9 structural bolt, and the chamfer clears the radius under the bolt head so the head seats squarely. They are used with HV / HR sets and tension control bolts.

Are TVS Chamfered Washers, DIN EN 14399-6 available in Chhattisgarh?

Yes. Jai Enterprises, an authorised distributor of TVS Sundram Fasteners, supplies from Bhilai and Raipur all over Chhattisgarh and across India. Call +91 9340081159 or use the enquiry form.

Can I get a different finish or a non-listed size?

Yes. The standard finishes are zinc phosphate, trivalent iridescent, trivalent white, hot dip galvanised and zinc flake coating (Geomet / Magni / Delta); other finishes and sizes or lengths outside the range are quoted on enquiry from SFL.

How to order

Call Jai Enterprises on +91 9340081159 or send an enquiry with the sizes, hardness, finish and quantity of Chamfered Washers, DIN EN 14399-6 you need; they are supplied at a price on request. We supply from Bhilai and Raipur all over Chhattisgarh - Bhilai, Raipur, Durg, Korba, Bilaspur, Raigarh, Jagdalpur, Kanker, Ambikapur and every other district - and across India.