Home / Nuts / Manifold Nuts / Metric Manifold Nuts Product Description M8 x 1.25mm Exhaust Manifold Nuts - BrassExhaust Manifold Nuts are a high tensile solid brass nut used to attach a vehicle intake/exhaust manifold. Manifold Nuts are made of brass as it helps to eliminate seizure on the exhaust manifold studs. These exhaust manifold nuts are made from Brass which offers both high tensile strength and high corrosion resistance.For larger quantities or items not listed, please email sales@gwr-fasteners.co.uk and one of our team will provide you with a quotation. Read More Specifications Pitch 1.25mm Coarse Thread Diameter M8 Thread Pitch 1.25mm Across the Flats 12.5mm Diameter (A/F) 12.5mm Depth 8.5mm Nut Height 8.5mm Material Brass Socket Size 12.5mm Product Code MN-M8-1.25 Customer reviews (1 Customer reviews) Write A Review 5 Stars 0% 4 Stars 100% 3 Stars 0% 2 Stars 0% 1 Stars 0% Most RecentTop Rated The nuts dimensions, would be or interest to some people. I've given 4 stars, due to the excessive postage cost. Otherwise the nuts are well made. They are wider accross the flats, and twice the length, of. a standard M8 nut, which is a good idea for a brass nut, which will deform more easily, than a conventional steel nut. Ian Brown | Manchester | November 2025 Specification Pitch 1.25mm Coarse Thread Diameter M8 Thread Pitch 1.25mm Across the Flats 12.5mm Diameter (A/F) 12.5mm Depth 8.5mm Nut Height 8.5mm Material Brass Socket Size 12.5mm Product Code MN-M8-1.25 Description M8 x 1.25mm Exhaust Manifold Nuts - BrassExhaust Manifold Nuts are a high tensile solid brass nut used to attach a vehicle intake/exhaust manifold. Manifold Nuts are made of brass as it helps to eliminate seizure on the exhaust manifold studs. These exhaust manifold nuts are made from Brass which offers both high tensile strength and high corrosion resistance.For larger quantities or items not listed, please email sales@gwr-fasteners.co.uk and one of our team will provide you with a quotation. Reviews (1 Customer reviews) Write A Review 5 Stars 0% 4 Stars 100% 3 Stars 0% 2 Stars 0% 1 Stars 0% Most RecentTop Rated The nuts dimensions, would be or interest to some people. I've given 4 stars, due to the excessive postage cost. Otherwise the nuts are well made. They are wider accross the flats, and twice the length, of. a standard M8 nut, which is a good idea for a brass nut, which will deform more easily, than a conventional steel nut. Ian Brown | Manchester | November 2025 Delivery & Returns 1 Customer Reviews M8 x 1.25mm Exhaust Manifold Nuts - Brass Item in Stock (113 Available) Product Code MN-M8-1.25 Need More?Additional stock available in: 3 - 5 Days £0.51 Quantity Range Unit Price Unit Saving 1 - 4 £0.51 No Saving 5 - 9 £0.46 £0.05 10 - 24 £0.37 £0.14 25 - 49 £0.32 £0.19 50 - 99 £0.30 £0.21 100 - 249 £0.28 £0.23 250 - 499 £0.26 £0.25 500 - 999 £0.25 £0.26 1000 - 4999 £0.24 £0.27 5000+ £0.23 £0.28 Login to add this product to your wishlist. You Will Earn 0 points which is the equivalent of £0.00