Heavy Wall Self Locking Thread Insert, 1/4"-28 Int Thrd Sz, 18-8 Stainless Steel, 5 PK MPN:303-428-PK5
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Free Shipping
In Stock
SKU
510-G2834483
Heavy Wall Self Locking Thread Insert, 1/4"-28 Int Thrd Sz, 18-8 Stainless Steel, 5 PK
E-Z LOK's Heavy Wall Self Locking Thread Insert is a reliable and durable solution for metal applications. Compatible with 1/4in-28 internal threads, these inserts provide a secure fit in metal surfaces, ensuring a strong and leak-free connection. With a 18-8 stainless steel construction, they resist corrosion and withstand heavy loads. Ideal for use in industries such as aerospace, automotive, and oil and gas, these inserts can be used in applications where high-strength and reliability are critical, including engine mounts, cylinder heads, and valve train components. They are also easy to install and require minimal space.
Top product features:
- Self locking thread insert provides a secure fit in metal materials
- 18-8 stainless steel construction resists corrosion and wear
- Internal thread size of 1/4 In.-28 allows for precise threading and compatibility with standard tools
Top product applications:
- Heavy Duty Equipment Mounting
- High-Temperature Pipe Fittings
- Aerospace Fastening Systems
Self Locking Thread Insert, Compatible Material Metal, Compatible Tap Size 7/16 In.-14, Drill Bit Size U, External Thread Fit 2A, External Thread Size 7/16 In.-14, Finish Plain, Insert Diameter 7/16 in, Internal Thread Fit 2B, Internal Thread Size 1/4 In.-28, Material Stainless Steel, Material Grade/Class 18-8, Maximum Hole Diameter 0.368 in, Minimum Installation Depth 1/2 in, Overall Length 7/16 in, System of Measurement Inch, Thread Direction Right Hand, Thread Type UNF Internal/UNC External
Additional Information
- Country of Origin: US
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: PK
- Package Length: 4.00
- Package Width: 0.50
- Package Height: 0.50
- Package Weight: 0.03
Product info last updated on February 5, 2026 9:47am UTC
Category: Threaded Inserts