Hex Bolt Metric 8.8 Fine Pitch Din961 8.8 Rf P-1.50

Hex Bolt DIN 961 Fine Pitch 1.50 Class 8.8 is a hex head bolt for mechanical assemblies where fine thread helps control adjustment, vibration and regulation in medium diameters. At TECTUL it is quoted per unit and by actual available size, cross-checking diameter, length, pitch, material and standard before confirming price. This reference differs by 1.50 fine pitch and DIN 961 partial thread, unlike DIN 933 full thread; therefore it should not be replaced with a similar sister reference only because it has a hex head. The material reported for the lot is carbon steel. For classes 8.8 and 10.9, selection is based on ISO 898-1 as a reference for mechanical properties; for DIN 933, DIN 960 or DIN 961, full, partial or fine thread geometry is validated according to the drawing. For ASTM A325, A490 or A394 bolts, the project standard defines bolt, nut, washer and installation. We do not publish single load or torque values because they depend on lubrication, nut, washer, thread condition, grip length and engineering criteria.

Installation recommendations

• Verify the pitch with a thread gauge before installation; a coarse-pitch nut can enter partially and damage the fine thread.
• Clean threads, holes and bearing surfaces before assembly to avoid false tightening.
• Do not mix metric thread with UNC or UNF; if in doubt, compare against a sample or drawing.
• Apply the torque or tightening method defined by engineering, considering lubrication and coating condition.
• Check grip length and thread protrusion so the joint clamps on the parts, not on the thread end.

We dispatch to Bogotá, Medellín, Cali, Barranquilla and all of Colombia. Request a quote via WhatsApp for this hex bolt din 961 fine pitch 1.50 class 8.8, indicating size, quantity, pitch, finish and whether you need a compatible nut or washer.