XINDA-OM-AS-005
DXJ M3–M12 × 0.25 Copper Fine-Thread Adjuster Lock Nuts
Knurled, side-hole, and stepped lock-nut formats for securing fine adjustment screws, with 19 source-listed models
- Source-confirmed copper adjuster lock nuts
- Seven metric internal thread diameters from M3 to M12 × 0.25
- Knurled, side-hole, stepped/T, and round body formats
- Available models
- 19 standard models
- Lead time
- Confirmed after model and quantity review
- Purchase method
- RFQ by model
Reference price
$10.03 - $42.37
Select a model to view availability.
Not sure which model? Get selection helpProduct overview and selection guidance
Product-family scope, interfaces, selection limits, and supply notes.
Copper-based lock nuts for securing fine-thread adjustment mechanisms. Source images show knurled, side-hole, stepped and round forms. Metric choices explicitly mark a 0.25 pitch; the pitch of the imperial DXJ-CK1/4 option is not documented. Choose by the complete model and mating thread, not diameter alone.
Matching the thread
Match the internal thread to both the nominal diameter and pitch of the adjustment screw. A 1/4-inch label does not establish fit with every 1/4-inch screw; confirm threads per inch or pitch. Similar outside diameters do not make metric and imperial parts interchangeable.
Choosing the body style
Use the available space, finger or tool access and bearing surface to choose a knurled, side-hole or stepped form. Numerical pairs in a model label remain source notation until a drawing defines them. Do not assume they are outside diameter and thickness.
Locking and acceptance
Agree how the adjustment screw is held while the nut is tightened, then check the mechanism position after locking. Confirm permitted torque, thread fit, alloy and repeated-locking life for the application. The source provides no common rating for those values.
Supply information
Optical mounts shown in the application image are not included automatically with a nut. Provide the complete model, mating screw, access constraints, quantity and packing requirements. Custom shapes, materials and finishes require a drawing.
Selection checklist
Nominal diameter and pitch
Complete model and body style
Tool access and bearing surface
Permitted locking torque
Order quantity
To be confirmed
Pitch of the imperial 1/4 option
Dimension definitions for some model labels
Alloy and hardness
Permitted torque and service life
Procurement and technical information
Select a model so we can confirm pricing, availability, lead time, and required documents.
Procurement method
Formal RFQ by model
Lead time
Confirmed after model and quantity review
Technical documents
Request drawings and specifications with your RFQ
Typical applications
- Locking the setpoint of a fine adjuster in an optical mount
- Securing adjustment screws in matched threaded bushings
- Axial position retention in translation and tip-tilt mechanisms
- Custom outside-diameter, thickness, or tool-interface lock nuts
Product highlights
- Source-confirmed copper adjuster lock nuts
- Seven metric internal thread diameters from M3 to M12 × 0.25
- Knurled, side-hole, stepped/T, and round body formats
- 19 sales models plus one 1/4-inch option with unconfirmed pitch