National Technologies was commissioned by a customer in the engine manufacturing industry to complete the screw machining of the steel plug highlighted below, for use in an engine assembly. Our advanced single spindle screw machining process was carried out on 12L14 steel utilizing a Brown & Sharpe Ultramatic screw machine. The fine detailing was performed with threading and drilling processes. Deburring was employed for the thorough cleaning of the part, and the unit was finished with a non metallic, corrosion resistant Parco Lubrite 5 manganese phosphate conversion coating. Dimensional and visual inspections were executed to ensure integrity and quality.
The tightest tolerance of ± 0.010” and an angular tolerance of ± 1° were met during fabrication. Overall measurements of the plug were a length of 0.531”, an outside diameter of 0.875”, and a hex dimension of 0.861”/0.880”. After a turnaround time of 2 weeks, 526 plugs were constructed and shipped to the customer as specified. For over 50 years, National Technologies has been providing high volume custom CNC machined and screw machined parts, with an emphasis on customer service. For more about this screw machined plug project or any of our extensive machining capabilities please see the table below or contact us directly.
Single Spindle Screw Machining Project Highlights
- Product Name
Plug
- Product Description
This plug is used in an engine component.
- Capabilities Applied/Processes
Primary:
Single Spindle Screw MachiningSecondary:
Drilling
Threading
Deburring
Conversion Coating
- Equipment Used to Manufacture Part
Brown & Sharpe Ultramatic
- Overall Part Dimensions
OD: Ø 0.875″ ± 0.010
Length: 0.531″ ± 0.010
Hex: 0.861″ / 0.880″
- Tightest Tolerances
± 0.010″
Angular: ± 1°
- Material Used
12L14 Steel
- Material Finish
Parco Lubrite 5 Manganese Phosphate Conversion Coated
- In Process Testing/Inspection Performed
Dimensional Inspection
Visual Inspection
- Industry for Use
Engine Manufacturing
- Volume
526
- Delivery/Turnaround Time
2 Weeks
- Delivery Location
United States
- Standards Met
Customer Specifications, 2D CAD Drawing
(SP 9940-503)
