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M18 Bolts, Screws, Nuts & Washers

14 products
M18 Bolts, Screws, Nuts & Washers

M18 is a metric thread with an 18 mm nominal diameter and a coarse pitch of 2.5 mm (ISO 261). A standard hex head takes a 27 mm spanner across the flats.

In stock now: 407 lines; covering Bolts (126), Hex Bolts (108), Screws (91), DIN933 (84), Socket Head Screws (78); priced from $0.0074 per piece. Every line is sold by the piece — one piece is a valid order — and volume discounts apply automatically from 5%.

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Frequently asked

What thread pitch and spanner size does M18 use?
A standard M18 metric coarse thread has a pitch of 2.5 mm (ISO 261). A hexagon head M18 takes a 27 mm spanner across the flats. We also stock fine-pitch and imperial equivalents — ask for the size list.
How much do M18 fasteners cost?
Prices in our catalogue for M18 run from $0.0074 to $48.5636 per piece, depending on diameter, length and material. There is no minimum order, and volume discounts apply automatically from 5%.
Is there a minimum order quantity for M18?
No. Every line is sold by the piece, so you can order a single piece to check the fit and the finish before committing to a production quantity. Volume discounts start at 5% and step down as the quantity rises.
What do you stock in M18?
M18 Bolts, Screws, Nuts & Washers currently covers 407 lines across Bolts, Hex Bolts, Screws, DIN933, Socket Head Screws, Nuts. The full list of sizes, materials and finishes on this page is live — use the filters at the top to narrow it down.
How quickly do you ship M18 fasteners, and can you send them to the EU or Russia?
In-stock lines leave our Foshan warehouse within 24–48 hours. We ship worldwide, including the EU and Russia. For the EU we are appointing a responsible person under Regulation (EU) 2023/988 (GPSR); for EAEU orders the conformity documents are handled with the importing party, who is the applicant of record. We can supply an EN 10204 3.1 mill test certificate, a full technical specification and a packing list with weights on request.
Product Diameter × Length Material Stock Unit price
DIN 6334 Hex Long Nut M18x40 304 Stainless Steel DIN 6334 Hex Long Nut M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $2.1101 Add to cart
DIN 6334 Hex Long Nut M18x40 304 Stainless Steel DIN 6334 Hex Long Nut M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $1.8047 Add to cart
DIN 916 Socket Set Screw Cup Point M18x40 40Cr Alloy Steel DIN 916 Socket Set Screw Cup Point M18x40 40Cr Alloy Steel
Black Oxide
M18 × 40 40Cr Alloy Steel In stock $0.8341 Add to cart
GB 70 Socket Head Cap Screw M18x40 10B21 Carbon Steel GB 70 Socket Head Cap Screw M18x40 10B21 Carbon Steel
Blue-White Zinc Plated
M18 × 40 10B21 Carbon Steel In stock $0.4458 Add to cart
Round Long Nut M18x40 304 Stainless Steel Round Long Nut M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $1.8093 Add to cart
DIN 912 Socket Head Cap Screw M18x40 40Cr Alloy Steel DIN 912 Socket Head Cap Screw M18x40 40Cr Alloy Steel
Black Oxide (Hardened)
M18 × 40 40Cr Alloy Steel In stock $0.6950 Add to cart
DIN 912 Socket Head Cap Screw M18x40 40Cr Alloy Steel DIN 912 Socket Head Cap Screw M18x40 40Cr Alloy Steel
Black Oxide (Hardened)
M18 × 40 40Cr Alloy Steel In stock $1.7255 Add to cart
DIN 912 Socket Head Cap Screw M18x40 316 Stainless Steel DIN 912 Socket Head Cap Screw M18x40 316 Stainless Steel
Plain
M18 × 40 316 Stainless Steel In stock $2.6638 Add to cart
DIN 912 Socket Head Cap Screw M18x40 304 Stainless Steel DIN 912 Socket Head Cap Screw M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $1.3750 Add to cart
GB 5783 Hex Head Bolt Full Thread M18x40 40Cr Alloy Steel GB 5783 Hex Head Bolt Full Thread M18x40 40Cr Alloy Steel
Black Oxide (Hardened)
M18 × 40 40Cr Alloy Steel In stock $0.7883 Add to cart
DIN 933 Hex Head Bolt Full Thread M18x40 PA66 Nylon DIN 933 Hex Head Bolt Full Thread M18x40 PA66 Nylon
Black
M18 × 40 PA66 Nylon In stock $0.8279 Add to cart
DIN 933 Hex Head Bolt Full Thread M18x40 PA66 Nylon DIN 933 Hex Head Bolt Full Thread M18x40 PA66 Nylon
White
M18 × 40 PA66 Nylon In stock $0.8279 Add to cart
DIN 933 Hex Head Bolt Full Thread M18x40 304 Stainless Steel DIN 933 Hex Head Bolt Full Thread M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $1.1450 Add to cart
DIN 933 Hex Head Bolt Full Thread M18x40 304 Stainless Steel DIN 933 Hex Head Bolt Full Thread M18x40 304 Stainless Steel
Plain
M18 × 40 304 Stainless Steel In stock $1.0806 Add to cart
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