384356
384356 - Compression Spring | Outside Dia.: 27.5mm | Inside Dia.: 18.6mm | free length: 177.8mm
384356 - Compression Spring | Outside Dia.: 27.5mm | Inside Dia.: 18.6mm | free length: 177.8mm
404356 - Compression Spring | Outside Dia.: 29.1mm | Inside Dia.: 20.2mm | free length: 177.8mm
424356 - Compression Spring | Outside Dia.: 30.7mm | Inside Dia.: 21.8mm | free length: 177.8mm
444356 - Compression Spring | Outside Dia.: 32.2mm | Inside Dia.: 23.3mm | free length: 177.8mm
464356 - Compression Spring | Outside Dia.: 33.8mm | Inside Dia.: 24.9mm | free length: 177.8mm
484356 - Compression Spring | Outside Dia.: 35.4mm | Inside Dia.: 26.5mm | free length: 177.8mm
504356 - Compression Spring | Outside Dia.: 37.3mm | Inside Dia.: 28.4mm | free length: 177.8mm
AT 3680 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 254mm | Extended Length: 579.663mm
AT 3688 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 279.4mm | Extended Length: 642.668mm
AT 3780 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 254mm | Extended Length: 479.173mm
AT 3788 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 279.4mm | Extended Length: 530.503mm
AT 3880 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 254mm | Extended Length: 416.55mm
AT 3980 - Extension Spring - Outside Dia.: 19.1mm | Free Length: 254mm | Extended Length: 374.198mm
AV 3772 - Extension Spring - Outside Dia.: 22.2mm | Free Length: 228.6mm | Extended Length: 509.859mm
AV 3872 - Extension Spring - Outside Dia.: 22.2mm | Free Length: 228.6mm | Extended Length: 434.114mm
AV 3972 - Extension Spring - Outside Dia.: 22.2mm | Free Length: 228.6mm | Extended Length: 382.545mm
Compression | Extension | Spring Lengths

| Compression Springs | Extension Springs | |
| Working Length |
Its is not advisable to use more than 80% of the maximum possible deflection. |
We recommend a safe extended length for our springs |
| End Coils | Up to 0.5mm wire - closed only. Over 0.5mm wire - closed & ground |
Full loops are similar to outside diameter. Loop end positions may vary. |
| Tolerances | British Standard - BS 1726: Part1:Grade 2 |
British Standard - BS 1726: Part2:Grade 2 |
| Materials | Carbon Steel Wire / Music Wire - British Standard BS5216, Grade ND3. | |
| Winding | Springs are normally right wound, however this may vary. | |
| Finish | Springs are stress relieved at appropriate temperatures, and stock springs are supplied in a plain finish, lightly oiled. |
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