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Extension springs with turnable loops

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end

Extension springs are designed to provide a specific pulling force when extended to a certain length. This particular variant of extension springs, with turnable loops, is designed to maximize the use of the spring's extendable length (Ln) without the risk of loop breakage. Extension springs with a swivel loop are made with hardened steel loops that are coned at the spring ends.

Measurements between2.5 - 6 mm

Measurements between17 - 50 mm

Measurements between110 - 360 mm

Measurements between12 - 24 mm

Measurements between0.49 - 30 N/mm

Measurements between153 - 644 mm

Measurements between208 - 1611 N

108 itemsd (mm)Do (mm)L0 (mm)a (mm)R (N/mm)Ln (mm)Fn (N)
Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
3828

ESTL 2.5X17X110

31 in stock

2.5

17

110

12

5.9

153

288

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
6350

ESTL 2.5X17X140

12 in stock

2.5

17

140

12

3.8

207

289

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
3829

ESTL 2.5X17X170

17 in stock

2.5

17

170

12

2.8

260

286

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
6351

ESTL 2.5X17X200

17 in stock

2.5

17

200

12

2.3

314

296

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
3830

ESTL 2.5X17X230

07/02/2026

2.5

17

230

12

1.9

367

294

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
6352

ESTL 2.5X17X260

9 in stock

2.5

17

260

12

1.6

421

292

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
6353

ESTL 2.5X20X110

07/02/2026

2.5

20

110

12

3.4

175

250

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
3831

ESTL 2.5X20X140

13 in stock

2.5

20

140

12

2.2

241

251

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
6354

ESTL 2.5X20X170

10 in stock

2.5

20

170

12

1.6

307

248

Extension springs with turnable loops — a helical steel extension spring with turnable loop hooks at each end
3832

ESTL 2.5X20X200

21 in stock

2.5

20

200

12

1.3

372

253

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