# Spec

**Manufacturer:** Spec  
**MPN:** `E12501356500M`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Spec |
| Manufacturer name | Spec |
| Manufacturer | Spec |
| DimensionUnit | inch |
| GraingerSku | 781PK6 |
| Extra Product Name | Spec |
| UnitOfMeasure | PK |
| Weight | 0.32 |
| WeightUnit | lbs |
| atoms | 2 |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | CN |
| extendedLead | 17 |
| extendedQty | -2 |
| height | 1.25 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 6.5 |
| moq | 1 |
| MPN | E12501356500M |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | Drop Ship |
| SKU | G501916623 |
| tierMinQty1 | 1 |
| tierPrice1 | 20.94 |
| url | https://www.zoro.com/spec-extension-spring-pk2-e12501356500m/i/G501916623/ |
| width | 1.25 |
| Type | High Precision |
| Material | Music Wire |
| Overall Length | 6 1/2 in |
| Outside Dia | 1.25 in |
| Wire Dia | 0.135 in |
| Spring Rate (Lbs /In ) | 11 lb/in |
| Deflection @ Load | 5.65 in |
| Meets/Exceeds | ASTM-A228 and AMS-5112 |
| Finish | Oil |
| Load (Lbs ) | 68.62 lb |
| Initial Tension (Lbs ) | 6.18 lb |
| Item | Extension Spring |
| End Type | Full Twist Loops |
| Country of Origin (subject to change) | China |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G501916623 | 20.94 | 1 | None | 1 |
| Grainger | 781PK6 | 26.0 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/85500000/85700000/part_--E12501356500M---Spec--f44441ce2c.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp