Straight Surface Bolts

From The Anvil Straight Knob Bolt Sku 33723

Use-Cases & Benefits

Straight Surface Bolts for Flush Frames

Straight surface bolts (also called straight door bolts, straight window bolts, or surface-mounted slide bolts) secure flush door and frame alignments with a clean, minimal look. Ideal applications include the inactive leaf on double doors, internal privacy doors, cupboards and cabinets, timber gates, and window sashes.

Popular patterns include chamfered straight bolts, barrel bolts, and heavy-duty straight bolts with positive engagement. Lengths typically range from 75 mm, 100 mm, 150 mm, 200 mm, 250 mm to 600 mm, many with interchangeable surface, angle, floor or mortice keeps for vertical or horizontal fitting.

For offset frames, see Cranked (Necked) Bolts; for concealed double-door solutions, see Flush Bolts; for single-handle top/bottom locking, see Espagnolette Surface Bolts.

Explore more in Architectural Ironmongery, Accessories, Door Furniture, and Window Furniture.

Materials, Finishes & Selection

Pick the Right Length, Throw & Keep

Select bolt length to suit door height and handling—longer bodies offer smoother travel and leverage on tall doors. Ensure throw length reaches the keep without binding; align the bolt body parallel to the frame for consistent action. Choose keeps to match the situation: surface keeps for face-fix frames, angle/floor keeps when shooting into a threshold, and mortice keeps for a neat pocket. Finish choices cover heritage and contemporary schemes: Antique Black, Beeswax, Aged Brass, Pewter, Polished Brass, Polished Chrome, Polished Nickel, Satin Nickel, Satin Brass, Matt Black. For coastal or exposed sites, 316 marine-grade stainless increases corrosion resistance. Coordinate with matching hinges, latches, door handles and window fasteners via our Architectural Ironmongery and Accessories ranges. For guidance, visit our contact page.

Frequently Asked Questions

What are straight surface bolts?

Straight surface bolts are face-fitted sliding bolts for flush frames on doors, windows, cupboards and gates, offering simple, reliable security.

When should I use a straight bolt instead of a cranked bolt?

Choose a straight bolt when the door and frame are flush. Use a cranked (necked) bolt when the frame sits proud and the throw must bridge an offset.

Are there marine-grade options for coastal installations?

Yes. Marine-grade 316 stainless and durable powder-coated finishes help resist corrosion outdoors and in coastal environments.

UK-Wide Supply & Brands

Straight Surface Bolts for Homes, Heritage & Light Commercial

This collection covers common UK searches and LSI terms, including straight door bolts, straight window bolts, surface-mounted door bolts, flat surface bolts, security straight surface bolts, heavy-duty straight bolts, brass straight bolts, black straight bolts for doors, polished chrome door bolts, satin nickel straight bolts, and marine grade straight bolts (316). Compatible with leading ranges such as From The Anvil, Carlisle Brass, Heritage Brass and Frelan Hardware to deliver consistent design language across a project. Delivery available across the UK including London, Manchester, Birmingham, Leeds, Glasgow, Edinburgh and Cardiff. If you can’t find a size or finish, please contact us for tailored advice.