Mutual Screw & Supply

M42-4.5 X 90mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide

M42-4.5 X 90mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class - Main image
$52.67 $71.17 In stock

These M42-4.5 x 90mm socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M42-4.5
  • Length: 90mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M42-4.5
  • Length: 90mm
  • Measurement type: Metric
  • Pack quantity: 1 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Isabella ★★★★★

The black oxide finish on these screws gives them a serious, professional look, and they threaded into my machinery mounts perfectly without any binding. For a 12.9-grade fastener at this size, the price is hard to beat, and they feel absolutely solid in hand.

David W. ★★★★★

I needed heavy-duty fasteners for a jig I’m building, and these class 12.9 alloy steel screws threaded smoothly into the tapped holes without binding. The thermal black oxide coating gives them a consistent, non-reflective finish that looks solid for machinery work.

Violet ★★★★★

The black oxide finish on these M42 screws looks great and seems durable. Threaded them into a jig I’m building and they seated perfectly with no wobble. Exactly the strength I needed for heavy machinery work.