External hex head titanium bolts — fully threaded (DIN 933) or partially threaded (DIN 931) for flange connections, vessels & heavy-duty assemblies.
DIN 933 (fully threaded) & DIN 931 (partially threaded) commonly referenced — confirm variant at inquiry.
Six-sided external hex head. Head width and height per DIN standard.
External wrench drive (13 mm for M8, 19 mm for M12, etc. per DIN 933 / 931).
DIN 933: fully threaded. DIN 931: partially threaded with smooth shank. Metric coarse & fine pitch.
Standard Range: M3–M48 (DIN 933 / 931). Lengths per DIN series.
Custom Supply: Cut-to-length, non-standard head dimensions, special thread pitches.
Stock Availability: M5–M16 common lengths in Gr2 & Gr5.
Regular: Grade 2 (CP Ti) & Grade 5 (Ti-6Al-4V alloy).
Coordinated: Grade 1, Grade 7, Grade 9, Grade 23 — subject to order quantity and manufacturing review.
Note: Titanium fastener strength grades are not equivalent to steel property classes (8.8 / 10.9 / 12.9). Mechanical properties depend on grade, part geometry, thread engagement and heat treatment — confirm against your specification.
DIN 933 / DIN 931 (metric hex bolts), ISO 4014 / ISO 4017 (international).
Non-standard head height, flange-backed hex (per DIN 6921 style), special thread pitches, shank lengths and coatings coordinated per drawing.
Bag / box / wooden case per request. Bulk and export packaging supported. Certified packaging marking on request.
Flange bolting, vessel fastening, heat exchanger assemblies.
Saltwater-resistant external hex bolting above and below water.
Airframe secondary structures and ground support equipment.
Machinery, pumps, valves, towers — wherever corrosion resistance and light weight are required.
DIN 933: fully threaded along the entire shank length — used where thread engagement is needed through the full joint thickness, or when the bolt passes through a tapped hole in one member.
DIN 931: partially threaded with an unthreaded smooth shank under the head — used for bearing / shear applications where the smooth shank carries the shear load, or when the joint requires clamping through clearance holes.
For critical load-bearing assemblies, matching the bolt and nut grade (Grade 5 bolt with Grade 5 nut) is recommended. For non-critical joints, a Grade 2 nut can pair with a Grade 5 bolt, reducing joint capacity to the Grade 2 nut strength. Always specify nut grade together with bolt grade.
Titanium fastener strength is determined by material grade and part geometry, not the steel "class" system (8.8, 10.9, 12.9). These steel numbers refer to minimum tensile / yield strength values that do not have direct titanium equivalents. Actual properties for a given titanium hex bolt depend on grade, diameter, thread pitch, thread engagement length and manufacturing route — please specify your design requirements.
Tell us diameter (e.g. M12), length, thread type (fully or partially), grade (Grade 2 or Grade 5) and quantity. For custom or drawing-based requirements, share your drawings after initial contact — include material grade, dimensions, tolerances and quantity.
Helpful details: Diameter, Length, Fully or Partially Threaded, Grade, Quantity
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