TVS Hex Socket Keys, metric long length – hexagon sizes 1.3 to 18 mm, hardened steel (45 to 52 HRC)

TVS Sundram Fasteners Hex Socket Keys, metric long length are L-shaped hexagon keys (Allen keys) made by Sundram Fasteners Limited to IS 3082 / ISO 2936 / DIN 911, in metric hexagon sizes 1.3 to 18 mm, hardened to 52 HRC for hexagon sizes 1.3 to 8 mm; 48 HRC for hexagon sizes 9 to 14 mm; 45 HRC for hexagon sizes 15 to 18 mm, supplied in zinc phosphate finish. They drive socket head cap screws, set screws and other internal-hexagon fasteners: the short arm goes into the socket and the long arm is the lever for torque, or the long arm goes in for reach - the long series reaches into deep counterbores and past obstructions.

SFL's retail price list of October 2026 gives recommended retail list prices from Rs 2,650 to Rs 18,935 per 100 pieces across the listed sizes; the exact price for your sizes and length series is confirmed on enquiry.

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 screws have metric hexagon sockets; the key size must match the socket exactly - a loose key rounds the socket.
• The sizes you need are within hexagon sizes 1.3 to 18 mm.
• You need the extra reach of the long arm - deep counterbores and recessed screws.

List prices (SFL, 1 October 2026)

Prices are SFL's recommended retail list prices effective 1 October 2026, in rupees per 100 pieces, for the zinc phosphate finish. A few sizes are shown; ask us for any other size in the range. 1.3 mm, 3.5 mm, 4.5 mm, 7.0 mm, 9.0 mm, 11.0 mm, 12.0 mm, 13.0 mm, 14.0 mm, 15.0 mm, 16.0 mm, 17.0 mm and 18.0 mm are not on the list and are quoted on enquiry.

• 1.5 mm hex key, long: Rs 2,650 per 100 pieces
• 2.5 mm hex key, long: Rs 2,985 per 100 pieces
• 3.0 mm hex key, long: Rs 2,985 per 100 pieces
• 5.0 mm hex key, long: Rs 5,730 per 100 pieces
• 6.0 mm hex key, long: Rs 7,180 per 100 pieces
• 10.0 mm hex key, long: Rs 18,935 per 100 pieces
• Zinc phosphate finish; packed per box in 25, 10 and 5 depending on size

At a glance

• Brand: TVS Sundram Fasteners (Sundram Fasteners Limited, TVS group)
• Product: Hex Socket Keys, metric long length
• Standard: IS 3082 / ISO 2936 / DIN 911
• Sizes: hexagon sizes 1.3 to 18 mm
• Type: L-shaped hexagon key
• Hardness: 52 HRC for hexagon sizes 1.3 to 8 mm; 48 HRC for hexagon sizes 9 to 14 mm; 45 HRC for hexagon sizes 15 to 18 mm
• Material: Steel
• Surface finish: zinc phosphate
• List price: Rs 2,650 - 18,935 per 100 pieces (SFL list, 1 October 2026); exact price on enquiry
• Supplied by: Jai Enterprises, Bhilai and Raipur - to every district of Chhattisgarh and across India, +91 9340081159

Specifications and dimensions

• Standard: IS 3082 / ISO 2936 / DIN 911
• Material: steel, hardened and tempered
• Hardness: 52 HRC for hexagon sizes 1.3 to 8 mm; 48 HRC for hexagon sizes 9 to 14 mm; 45 HRC for hexagon sizes 15 to 18 mm
• Surface finish options: zinc phosphate
• 1.3 mm: across flats 1.27 mm, across corners 1.42 mm; long arm 81.0 mm, short arm 13.0 mm
• 1.5 mm: across flats 1.50 mm, across corners 1.68 mm; long arm 91.5 mm, short arm 15.5 mm
• 2.0 mm: across flats 2.00 mm, across corners 2.25 mm; long arm 102.0 mm, short arm 18.0 mm
• 2.5 mm: across flats 2.50 mm, across corners 2.82 mm; long arm 114.5 mm, short arm 20.5 mm
• 3.0 mm: across flats 3.00 mm, across corners 3.39 mm; long arm 129.0 mm, short arm 23.0 mm
• 3.5 mm: across flats 3.50 mm, across corners 3.96 mm; long arm 140.0 mm, short arm 25.5 mm
• 4.0 mm: across flats 4.00 mm, across corners 4.53 mm; long arm 144.0 mm, short arm 29.0 mm
• 4.5 mm: across flats 4.50 mm, across corners 5.10 mm; long arm 156.0 mm, short arm 30.5 mm
• 5.0 mm: across flats 5.00 mm, across corners 5.67 mm; long arm 165.0 mm, short arm 33.0 mm
• 6.0 mm: across flats 6.00 mm, across corners 6.81 mm; long arm 186.0 mm, short arm 38.0 mm
• 7.0 mm: across flats 7.00 mm, across corners 7.94 mm; long arm 197.0 mm, short arm 41.0 mm
• 8.0 mm: across flats 8.00 mm, across corners 9.09 mm; long arm 208.0 mm, short arm 44.0 mm
• 9.0 mm: across flats 9.00 mm, across corners 10.23 mm; long arm 219.0 mm, short arm 47.0 mm
• 10.0 mm: across flats 10.00 mm, across corners 11.37 mm; long arm 234.0 mm, short arm 50.0 mm
• 11.0 mm: across flats 11.00 mm, across corners 12.51 mm; long arm 247.0 mm, short arm 53.0 mm
• 12.0 mm: across flats 12.00 mm, across corners 13.65 mm; long arm 262.0 mm, short arm 57.0 mm
• 13.0 mm: across flats 13.00 mm, across corners 14.79 mm; long arm 277.0 mm, short arm 63.0 mm
• 14.0 mm: across flats 14.00 mm, across corners 15.93 mm; long arm 294.0 mm, short arm 70.0 mm
• 15.0 mm: across flats 15.00 mm, across corners 17.07 mm; long arm 307.0 mm, short arm 73.0 mm
• 16.0 mm: across flats 16.00 mm, across corners 18.21 mm; long arm 307.0 mm, short arm 76.0 mm
• 17.0 mm: across flats 17.00 mm, across corners 19.35 mm; long arm 337.0 mm, short arm 80.0 mm
• 18.0 mm: across flats 18.00 mm, across corners 20.49 mm; long arm 358.0 mm, short arm 84.0 mm
• Note: standard IS 3082 (printed as ISO 3082 in the catalogue; IS 3082 in SFL's price list)
• Note: hardness for hexagon sizes 1.5 to 8 mm: 52 HRC in the catalogue, 50 HRC in SFL's price list - confirm with us if it matters for your use
• 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 - IS 3082 / ISO 2936 / DIN 911 - with the dimensions published in SFL's technical catalogue, so parts interchange with any other maker's to the same standard.
• Hardened and accurately sized hexagon, so the key fills the socket and does not round it.

How to choose and fit

1. Choose the key by the socket size of the screw, not by the screw diameter; the screw tables on this site list the key size for each diameter.
2. Push the key fully into the socket before turning - a partly inserted key rounds the socket.
3. Short arm in the socket, long arm as the lever, for final tightening and for loosening; long arm in the socket, spun by the short arm, for speed and reach. Never extend the key with a pipe.

Where it is used

• assembly lines and toolkits
• maintenance of machines with socket head screws
• service of two-wheelers, vehicles and appliances

Other versions and series

• TVS Sundram Fasteners Hex Socket Keys, metric standard length - hexagon sizes 0.7 to 36 mm, list price Rs 1,250 - 695,810 per 100
• TVS Sundram Fasteners Hex Socket Keys, inch standard length - hexagon sizes 1/16" to 5/8", list price Rs 1,615 - 42,290 per 100
• TVS Sundram Fasteners Hex Socket Keys, inch long length - hexagon sizes 1/16" to 5/8", list price Rs 2,650 - 7,045 per 100

Related products

• TVS Sundram Fasteners Socket Head Cap Screws, ISO 4762 metric - the screws these keys drive
• TVS Sundram Fasteners Socket Set Screws, knurled cup point, ISO 4029 - set screws with the same sockets

Frequently asked questions

What is the price of Hex Socket Keys, metric long length?

SFL's recommended retail list price effective 1 October 2026 runs from Rs 2,650 to Rs 18,935 per 100 pieces across the listed sizes, for the zinc phosphate finish. The examples above show typical sizes. Call Jai Enterprises on +91 9340081159 with your sizes, grade, finish and quantity for the exact price; key sets and other finishes are quoted on enquiry.

What is the difference between standard and long keys?

Both have the same hexagon; the long series has a longer long arm, for reach into deep counterbores and recessed screws (and more leverage when that arm is used as the lever). The dimensions are in the table above.

Are TVS Hex Socket Keys, metric long length 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 finish is zinc phosphate; other finishes and sizes or lengths outside the list are quoted on enquiry from SFL.

How to order

Call Jai Enterprises on +91 9340081159 or send an enquiry with the sizes, length series and quantity of Hex Socket Keys, metric long length you need. SFL's list price is Rs 2,650 - 18,935 per 100 pieces across the listed sizes (SFL list, 1 October 2026); the exact price is confirmed on enquiry. 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.