Hexagon head screw M4 × 40 mm - compact metric fastener for precise assembly and repairs. Wrench/hexagon head; requires a spanner or socket (approx. 7 mm across flats).

• Brand: Talamex
• Type: Hexagon head screw (external hex)
• Size: M4 × 40 mm (4 mm x 40 mm; 1.57 in)
• Thread: M4 metric (0.7 mm pitch)
• Drive: Wrench/hex (use spanner or socket)
• Material/grade: Commonly available in A2 (AISI 304) or A4 (AISI 316) stainless steel, or property class 8.8 zinc-plated steel - check product variant before ordering
• Head across flats (approx.): 7 mm (AF7)
• Standards: May conform to common hex bolt standards (e.g., DIN 933 for fully threaded); verify specification
• Applications: General mechanical fastening; suitable for marine use when specified in A4/AISI 316 stainless
• Sold individually: Check required quantity before ordering

Verify fit, material grade and recommended torque for your application prior to installation. See related items in our Screws and Fasteners collections.