Aluminium 6061 Hex Nuts manufactured at TorqBolt are low density,high strength and highly malleable.
Dimensional standards as per DIN 934,ISO 4032,UNI 5587,BS 1768,BS 1770 are provided.
The raw material of these fasteners is classified as Non-Ferrous Alloys. Being a PED certified Fasteners Manufacturer by TUV Rheinland,our fasteners are accompanied with EN 10204 3.1/3.2 certification. Aluminium 6061 Hex Nuts are available in hot forged,cold forged and bar stock machined conditions depending upon the order quantity.
Aluminium 6061 Hex nuts are internally threaded fasteners that mate with bolts and studs to form clamped joints. TorqBolt manufactures Aluminium 6061 Hex nuts per ASME B18.2.2, ISO 4032/4033/4034, DIN 934/EN 24032, and DIN 6915 (heavy hex), in sizes M6–M100 and 1/4"–4".
Nut Height Categories
Standard / regular hex nut — ~0.875×D height, ASME B18.2.2 Type 1
Heavy hex nut — ~D height, full strength matched to bolt grade (A194 2H pattern)
Jam / thin nut — 0.5×D height, used as locknut against a primary nut
Coupling nut — long-form for joining two threaded rods
Cap / acorn nut — closed-end, decorative + thread protection
Locking Variants
For vibration-loaded joints, Aluminium 6061 Hex nuts are available as nyloc (polymer insert), all-metal prevailing-torque (DIN 980, distorted-thread style), flange-serrated (DIN 6923, integral washer face with anti-back-off teeth), and castle / slotted (DIN 935, cotter-pin retention). Each locking style trades reusability against prevailing-torque retention.
Thread & Mechanical
Aluminium 6061 Hex nut threads are gauged per ASME B1.1 / ISO 965 to Class 2B / 6H by default; high-strength variants use 3B / 4H6H. Proof-load testing per ASTM F606 verifies the nut can develop the bolt's full strength without thread strip; hardness range is controlled to prevent stress-corrosion susceptibility (HV 250–353 typical for high-grade nuts). Each lot is EN 10204 3.1 / 3.2 certified.
Special Patterns
TorqBolt also produces Aluminium 6061 Hex nuts in weld-nut, T-nut, square-nut, knurled thumb-nut, and rivet-nut patterns. NACE MR0175 / ISO 15156 sour-service certification available; NORSOK M-650 qualified mills supplying high-temperature service grades.
Aluminium Alloys
Aluminium alloys are specified for fasteners where weight reduction, electrical conductivity, or non-magnetic / non-sparking properties dominate the design envelope — aerospace structures, marine spars, electronics enclosures, and industries where reducing reciprocating mass directly improves performance. Density of ~2.7 g/cm³ (one-third of steel) combined with self-passivating Al₂O₃ surface gives respectable corrosion resistance in atmospheric service.
2024 (Al-Cu-Mg) is the high-strength aerospace alloy: yield ~325 MPa in T3 condition, used for airframe structural fasteners. 6061 (Al-Mg-Si) is the general-purpose grade with excellent weldability and corrosion, the standard for marine + structural fasteners. 7075 (Al-Zn-Mg-Cu) is the highest-strength aluminium fastener alloy: yield ~505 MPa in T6 condition, comparable to mild steel at one-third the weight — the dominant material for civilian + military aircraft assembly.
Aluminium fasteners ship per AMS 7222 / 7223 / ASTM F468 (rod) with full mechanical certification including hardness (Rockwell B 60-87), tensile, and conductivity testing. Galvanic isolation is critical when aluminium fasteners contact dissimilar metals in moist environments — cadmium plating or insulating washer + sleeve combinations are commonly specified.
