Hex Head Nuts
1. Instructions for Use
Mating Check: Ensure the nut matches the bolt/stud in thread
specification, property class, and material compatibility.
Clean Threads: Remove dirt, burrs, and foreign material from
threads before assembly.
Hand Start: Thread the nut on by hand for several turns to confirm
smooth, unobstructed engagement.
Tool Selection: Use correctly sized, well-maintained wrenches or
sockets. Do not use adjustable wrenches for final tightening.
Tightening Method: For nut groups, use a cross-pattern,
symmetrical, multi-step tightening sequence. For critical joints,
always use a torque wrench to achieve the specified torque value.
Final Inspection: After tightening, check that the nut is fully
seated against the bearing surface and is not cocked.
2. Precautions
No Mixing of Materials: Direct contact between dissimilar materials
(e.g., carbon steel and stainless steel) can cause galvanic
corrosion. Insulation measures are required.
Torque Control: Over-tightening can strip threads or break the
bolt; under-tightening fails to provide sufficient clamping force,
leading to joint failure. Always follow recommended torque values.
Lock Nut Usage: Nylon insert lock nuts are typically for one-time
use; re-use diminishes locking effectiveness. Note the shelf life
of pre-applied adhesive nuts.
Environmental Considerations: For high-temperature or highly
corrosive environments, select special materials (e.g., A4-80
stainless, B8M alloy steel) and corresponding surface finishes.
3. Shipping Information
Lead Time: Standard products are readily available and typically
shipped within 1-3 business days after order confirmation. Lead
time for custom products (special materials, non-standard sizes,
special finishes) ranges from 7 to 30 business days depending on
complexity, confirmed per order.
Logistics: We partner with major logistics and courier companies,
offering domestic land/air freight and international sea/air
freight. We provide optimized logistics solutions based on customer
needs, weight, and volume.
Shipment Notification: Upon dispatch, we provide a tracking number
and link for real-time shipment status updates.
4. Payment Terms
Payment Methods: We accept Telegraphic Transfer (T/T), Letter of
Credit (L/C), and secure transactions via B2B platforms like
Alibaba.
Payment Terms: Standard terms are 30% deposit, 70% balance against
copy of Bill of Lading. Flexible payment cycles can be discussed
for long-term partners with good credit.
Invoice: Official VAT or commercial invoices are provided after
shipment, either included with the goods or sent separately.
FAQ
1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the Alibaba certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20
days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the
cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T
in advance ,balance before shippment.
