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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £4.99 | 2 to 4 working days |
| Next Day | £9.99 |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 5 to 7 working days |
Product Number: SMC18
Variations
Removing castellated locknuts from motorcycle swingarms calls for a dedicated tool standard sockets simply will not engage correctly and risk damaging the nut. The Sealey SMC18 Swingarm Locknut Socket is a 4-pin, 4-tooth socket purpose-built to remove these castellated locknuts cleanly and safely. With an external diameter of 48.5mm, an internal diameter of 41mm, and a socket depth of 48.5mm, it is sized precisely for the task. The four pins measure 5.5mm wide and 4mm deep, engaging the castellations securely to deliver controlled torque without slippage. It also suits some engine mounting nuts. Driven by a 1/2" square drive, it is compatible with standard workshop ratchets and torque wrenches.
Key Features:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Model No | SMC18 |
|---|---|
| Brand | Sealey |
| Nett Weight | 0.280kg |
| External Ø | 48.5mm |
| Internal Ø | 41mm |
| Internal Socket Depth | 48.5mm |
| Number of Pins | 4 |
| Pin Width | 5.5mm |
| Pin Depth | 4mm |
| Drive Type | 1/2"Sq |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £4.99
Next Day Delivery Available
Delivery Estimate: 2 to 4 working days
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| Technical Specification | ||||||
|---|---|---|---|---|---|---|
| PRODUCT NUMBER | SX136 | SX138 | SMC21 | SMC19 | 30831 | 30838 |
A. The SMC18 has an external diameter of 48.5mm, an internal diameter of 41mm, and an internal socket depth of 48.5mm.
A. The SMC18 has 4 pins, each 5.5mm wide and 4mm deep.
A. The SMC18 uses a 1/2" square drive, compatible with standard ratchets and torque wrenches.
A. It is specially designed to remove castellated locknuts found on motorcycle swingarms, and is also suitable for some engine mounting nuts.
A. Yes, alternative variants in the same socket range include SMC19, SMC21, SMC22, and SMC23, which differ in specification. Please check each product listing for size details.
A. Yes, the SX136 and SX138 are listed as alternatives that perform a similar function. Please refer to those product listings for full details.
A. WhatsApp us on 07754 288583 with photos of the item and packaging, and we'll resolve the issue in line with our returns policy.
A. Standard UK mainland delivery is 3-5 working days.
A. Yes. Parts for Machines supplies genuine Sealey products.
A. Next-day delivery is available on most products and will appear as an option at checkout where eligible.
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