# Spec

**Manufacturer:** Spec  
**MPN:** `T33050`

The SPEC T33050 Music Wire Extension Spring is made from highly magnetic steel wire, meeting ASTM A228 standards for greater strength than stainless steel. This spring features a 28 mm outer diameter, 4 mm wire size, and a free length of 76 mm, extending to 101.4 mm. It has a load capacity of 564.0 N and a spring rate of 18.80 N/mm, with full twist loop ends for secure fastening.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Spec |
| Manufacturer name | Spec |
| Manufacturer | Spec |
| DimensionUnit | inch |
| GraingerSku | 782CW5 |
| Extra Product Name | Spec |
| UnitOfMeasure | PK |
| Weight | 0.13 |
| WeightUnit | lbs |
| atoms | 2 |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | CN |
| extendedLead | 17 |
| extendedQty | -2 |
| height | 1.11 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 3 |
| moq | 1 |
| MPN | T33050 |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | Drop Ship |
| SKU | G701797824 |
| tierMinQty1 | 1 |
| tierPrice1 | 17.79 |
| url | https://www.zoro.com/spec-extension-spring-metric-pk2-t33050/i/G701797824/ |
| width | 1.11 |
| Type | High Precision |
| Material | Music Wire |
| Overall Length | 76 mm |
| Outside Dia | 28 mm |
| Wire Dia | 4 mm |
| Spring Rate (Lbs /In ) | 18.8 N/mm |
| Item | Metric Extension Spring |
| Finish | Oil |
| Initial Tension (Lbs ) | 19.44 lb |
| Load (Lbs ) | 126.79 lb |
| End Type | Full Twist Loops |
| Meets/Exceeds | DIN-17223; JIS-G4314; AMS-5112 |
| Deflection @ Load | 25.4 mm |
| Country of Origin (subject to change) | China |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G701797824 | 17.79 | 1 | None | 1 |
| Grainger | 782CW5 | 27.12 | 1 | None | 1 |

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