Industrial Fastener · Nuts Series
Square Nut
Square nuts have four sides instead of six, providing more wrenching grip than a hex nut and dropping cleanly into a square pocket or channel. Common in woodworking applications (Tee-nut backers), in T-slot frames, and in electrical/architectural hardware.
Product Overview
Square Nut from HDBOLT
Square nuts have four sides instead of six, providing more wrenching grip than a hex nut and dropping cleanly into a square pocket or channel. Common in woodworking applications (Tee-nut backers), in T-slot frames, and in electrical/architectural hardware.
Supplied by HDBOLT in Yongnian, China. Our production capacity and extensive fastener stock support repeat orders and mixed-product shipments. Contact us to confirm availability for your size, grade and finish.
DIN 557 (regular), DIN 562 (thin)
Carbon steel, Stainless
Square nuts have four sides instead of six, providing more wrenching grip than a hex nut and dropping cleanly into a square pocket or channel....
Inspection records, lot labels, certificate options, and destination-ready packing.
Technical Data
Specification range
Final dimensions, mechanical properties, finish, and packing are confirmed against the RFQ and applicable standard.
| Standards | DIN 557 (regular), DIN 562 (thin) |
|---|---|
| Size Range | M5 – M20 |
| Material | Carbon steel, Stainless |
| Surface Finish | Plain, Zinc plated |
Common surface finishes
Select an option to review its finish details. Exact coating system, thickness, and corrosion requirement are confirmed with the order.
Quality Control
Quality Checks from Order to Shipment
Each order is matched to the specified standard and verified at practical control points before shipment.
RFQ confirmation
Standard, size, grade, pitch, finish, certificates, packing, and destination are locked before production.
Lot verification
Critical dimensions, thread fit, markings, finish appearance, and packing labels are sampled and recorded.
Shipment approval
Photos and required reports are prepared before packing, loading and export delivery.
Buyer Questions
Frequently asked questions
When should I use a square nut instead of a hex nut?
Square nuts make sense when the nut needs to seat in a square pocket (preventing rotation), when wider wrenching surface is needed for hand-wrench tightening, or when matching historical/aesthetic style. For most general fastening, hex remains the default.
Ready to quote Square Nut?
Send the standard, size, grade, finish, quantity, packing requirement, and destination. Availability and lead time are confirmed with the inquiry.