90° flat head titanium hex socket screws — head sits completely flush with the mating surface after assembly. DIN 7991 / ISO 10642 commonly referenced.
DIN 7991 / ISO 10642 commonly referenced standard.
90° flat countersunk conical head. Matched 90° countersink required in mating part.
Hexagon socket (Allen). Drive size smaller than socket head cap screws of the same diameter due to reduced head height.
Metric coarse & fine pitch. Inch UNC / UNF on request.
Standard Range: M2.5–M20 (DIN 7991). Lengths include head.
Custom Supply: Non-standard countersink angles (e.g. 82°), cut-to-length, custom head dimensions.
Stock Availability: M3–M12 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.
Note: Countersunk head reduces effective tensile / shear capacity compared to socket head cap screws of the same diameter. Specify load requirements — we will confirm suitability.
DIN 7991 (metric), ISO 10642 (international), ANSI B18.3.2 (inch).
Non-standard countersink angles, custom head profiles, special thread pitches, coatings coordinated per drawing.
Bag / box / wooden case per request. Bulk and export packaging supported.
Flush-fitting fasteners for aircraft skins, control surfaces & panels.
Low-profile, non-protruding assembly for housings and instrumentation.
Applications requiring a perfectly flush surface finish.
Flush-lying fasteners that minimize crevice corrosion risk.
Countersunk (DIN 7991): Flush head — requires 90° countersink in mating part. Lowest strength due to head design.
Socket head cap (DIN 912): Tall cylindrical protruding head — highest strength of the three, no countersink needed.
Button head (ISO 7380): Low-profile rounded protruding head — no countersink, moderate strength. Specify which variant suits your clearance and strength requirements.
No — the conical countersunk head will only seat properly against a matching 90° countersink. If the mating part is flat, use a button head or socket head cap screw instead.
Titanium countersunk screw strength depends on grade, diameter and thread engagement. The countersunk head itself is weaker than a raised head — do not directly compare to socket head cap screw load capacity of the same diameter. We can advise against specific load cases.
Tell us diameter (e.g. M6), length, countersink angle (default 90°), grade (Grade 2 or Grade 5) and quantity. For custom requirements, share drawings after initial contact.
Helpful details: Diameter, Length, Countersink Angle, Grade, Quantity
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