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BUMAX Screws, Bolts

BUMAX offers Screws, Bolts products in the Fasteners category such as, Hex Screws, Hex Socket Head Cap Screws, Hex Socket Flat Head Cap Screws and many more products that are related to Screws, Bolts. The most popular types of screws, bolts, washers, nuts and bolts that can be used with all types of fastening work. BUMAX products are available to order through MISUMI online 24 hours a day. Free shipping, no minimum order.

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BUMAX Screws, Bolts

FAQ Screw and Bolts

Question: What is the reference value for tightening torque?

Answer: Please see more details at "Initial tightening force and tightening torque" in [TECHNICAL DATA] PROPER BOLT AXIAL TIGHTENING FORCE / TORQUE

Question: Do the Strength Class shown at the table of "Initial tightening force and tightening torque" in [TECHNICAL DATA] PROPER BOLT AXIAL TIGHTENING FORCE / TORQUE be calculated within an elasticity range up to 70% of the rated yield strength when the torque method?

Answer: Strength Class shown at the table of “Initial tightening force and tightening torque” are calculated according to the limit of deformation and cutting force. So, please apply force at 70% when using.

Question: What is the difference between the thread gauge class 2 and class 3?

Answer: The accuracy of gauge when measuring with standard is difference.
Class 2 certified product is high precision product.

Question: Can I order the items in your list which prices are displayed as "-"?

Answer: No, those size are not available.
Only products with price displayed in the list can be ordered.

Question: What factors should I consider when choosing a screw or bolt?

Answer: Several factors are important, including:
Size: This refers to the diameter and length of the screw/bolt. Consider the thickness of the materials you are joining.
Material: Screws and bolts come in various materials like steel, brass, or nylon. Choose one that suits the materials being fastened and the environment (e.g., stainless steel for outdoor use).
Strength: Screws and bolts have different strength ratings. Consider the amount of force the fastener will need to withstand.
Drive type: This refers to the shape of the screw head (e.g., Phillips, flat, hex) and the tool needed to turn it. Choose a drive type you have the appropriate tool for.
Corrosion resistance: If the screw/bolt will be exposed to moisture or chemicals, choose a material with good corrosion resistance.

Question: What are some specialty screws?

Answer: Here are a few examples of specialty screws:
Sheet metal screws: have sharp points that can pierce thin metal sheets.
Self-tapping screws: can create their own threads in soft materials like plastic or wood.
Self-drilling screws: drill a pilot hole as they are screwed in, ideal for tougher materials.