Studs & bolts and threaded studs to drawing

“Studs and bolts” is the term many buyers use to enquire about anything that is long, has a thread and is tightened with a nut: the hex bolt and nut as an assembly, the threaded stud with threads at both ends, the stud bolt with a continuous thread, or a bolt to drawing with collar, spigot, cross hole or eye. In hydraulic steel structures, crane construction, rolling mills, presses and wind turbines, studs and bolts are needed in sizes that no standard series covers any more: M64 x 600, M90 x 6 x 540, M110 with fine thread and lengths of one metre and more.

Types RS Randack manufactures

• Bolts with head: Hexagon, square, round head, T-head or head to drawing, forged or turned.
• Threaded studs: Threads at both ends with an unthreaded shank, as a stud or with a reduced shank to DIN 2510.
• Stud bolts: Continuous thread, metric or UN, with heavy hex nuts.
• Eye bolts and clevis bolts: For attaching tie rods, turnbuckles and ropes.
• Bolts to drawing: With collar, shoulders, cross hole, internal thread, grooves or fits, up to 300 mm diameter and 3,500 mm long.

What comes with them

Nuts and washers from the same order, matched to each other and certified together; rolled threads, on request after quenching and tempering; coatings ranging from zinc flake through hot-dip galvanising to manganese phosphate with an anti-friction coating in the customer’s colour; marking with property class or material, manufacturer’s mark and batch; 3.1 or 3.2 inspection certificate with third-party inspection on site. Materials from 8.8 to 12.9, creep-resistant, stainless, duplex, nickel-based alloys.

What you should specify

Drawing or description with head shape, diameter, length, thread type and thread lengths, property class or material, nut and washer, coating, type of certificate, quantity and delivery date. If no drawing is available, RS Randack will prepare the production drawing from your information and submit it for approval.