# Hamilton

**Manufacturer:** Hamilton  
**MPN:** `S-7521-SPRT-4SL`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Hamilton |
| Manufacturer name | Hamilton |
| Manufacturer | Hamilton |
| DimensionUnit | inch |
| GraingerSku | S-7521-SPRT-4SL |
| Extra Product Name | Hamilton |
| UnitOfMeasure | EA |
| Weight | 106 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| extendedLead | 20 |
| extendedQty | -2 |
| height | 1 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 1 |
| moq | 1 |
| MPN | S-7521-SPRT-4SL |
| multiple | 1 |
| qtyInStock | 0 |
| qtyInStockOverride | Drop Ship |
| SKU | G3711222 |
| tierMinQty1 | 1 |
| tierPrice1 | 1455.04 |
| url | https://www.zoro.com/hamilton-ground-support-swivel-caster-21-heavy-duty-solid-pneumatic-tire-swivel-lock-s-7521-sprt-4sl/i/G3711222/ |
| width | 1 |
| Caster Wheel Shape | Standard |
| Caster Wheel/Tread Material | Solid Pneumatic |
| Load Rating | 2800 |
| Number of Wheels | 1 |
| Wheel Dia | 21 |
| Wheel Width | 6.9 |
| Inside Bolt Hole Spacing | 7 x 7 |
| Core Color | Black |
| Caster Temp Range | -30 to 120 deg(F) |
| Thread Guards | No |
| Mounting Bolt Dia | 0.625 |
| Caster Core Material | Steel |
| Plate Size | 8 1/2 x 8 1/2 |
| Caster Swivel Lock Type | 4-Position |
| Caster Product Group | Swivel Caster |
| Item | Swivel Caster |
| Non-Marking | No |
| Frame Finish | Powder Coat |
| Standards | ICWM |
| Caster Plate Hole Pattern | D |
| Caster Wheel Bearings | Tapered |
| Replacement Wheel | W-2160-SPRT-1-1/4 |
| Caster Frame Material | Forged Steel |
| Wheel/Tread Hardness Rating | Soft |
| Number of Mounting Holes | 4 |
| Mounting Height | 24.5 |
| Wheel/Tread Color | Black |
| Country of Origin (subject to change) | United States |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G3711222 | 1455.04 | 1 | None | 1 |
| Zoro | G9088088 | 991.2 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/178000000/178115500/part_--S7521SPRT4SL---Hamilton--1f8cecfb54.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp