16 standards72 specification pages

M18 Fasteners

All M18 screws, bolts, nuts and washers in the database. M18 has a nominal major diameter of 18 mm with a standard coarse pitch of 2.5 mm, across 16 standards.

Nominal Ø18 mm
Coarse pitch2.5 mm
Pitch Ø16.38 mm
Tap drill15.5 mm

M18 thread dimensions

Full thread page
Designation
M18 × 2.5
Major diameter
18 mm
Pitch
2.5 mm
Pitch diameter
16.38 mm
Minor diameter — external
14.93 mm
Minor diameter — internal
15.29 mm
Tap drill size
Ø 15.5 mm

M18 Screws

28 pages
DIN 912Hexagon Socket Head Cap Screw
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 80M18 × 100
ISO 4762Hexagon Socket Head Cap Screw
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 80M18 × 100
DIN 7991Hexagon Socket Countersunk Head Screw
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 80M18 × 100
ISO 10642Hexagon Socket Countersunk Head Screw
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 80M18 × 100

M18 Bolts

36 pages
DIN 933Hexagon Head Screw / Bolt — Full Thread
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 70M18 × 80M18 × 100M18 × 120
ISO 4017Hexagon Head Screw — Full Thread, Product Grade A/B
M18 × 30M18 × 35M18 × 40M18 × 50M18 × 60M18 × 70M18 × 80M18 × 100M18 × 120
DIN 931Hexagon Head Bolt — Partial Thread
M18 × 40M18 × 50M18 × 60M18 × 70M18 × 80M18 × 100M18 × 120M18 × 140M18 × 160
ISO 4014Hexagon Head Bolt — Partial Thread, Product Grade A/B
M18 × 40M18 × 50M18 × 60M18 × 70M18 × 80M18 × 100M18 × 120M18 × 140M18 × 160

M18 Nuts

6 pages
DIN 934Hexagon Full Nut
M18
ISO 4032Hexagon Regular Nut, Style 1
M18
DIN 439Hexagon Thin Nut (Jam Nut)
M18
ISO 4035Hexagon Thin Nut, Chamfered
M18
DIN 985Prevailing Torque Hexagon Nut with Nylon Insert
M18
ISO 10511Prevailing Torque Hexagon Nut with Non-Metallic Insert
M18

M18 Washers

2 pages
ISO 7089Flat Washer — Normal Series, 200 HV
M18
DIN 125 AFlat Washer — Normal Series, 140 HV
M18

Browse other sizes

M10M12M14M16M18M2M2.5M20M22M24M3M3.5M4M5M6M8