In the united states larger metric half sizes like 6 5 mm aren t standard in most hex key sets.
Allen key sizes in mm pdf.
C at alog 1 4 p p.
M3 2 5 2 2 56 18 609 562 m4 3 2 48 63 20 609 556 m5 4 2 76 70 25 734 911.
However the 1 4 sae hex wrench will likely work in place of a 6 5 mm wrench.
Less common metric sizes.
Screw size thread size allen key size required a length inches a length mm b shortest length mm rs hex key part no.
Brown allen keys are made from special grade alloy steel which withstands upto 30 higher torque as compared to allen keys made from crv steel higher hardness of 57 to 62 hrc offered in case of brown allen keys along with superior steel properties enables upto 30 higher wear resistance as compared to crv steel allen keys.
Hex key size 3 16 1 4 5 16 3 8 3 8 7 16 diameter m16 mio m12 m14 m16 m18 m20 m22 m24 m30 wrench size 7 mm 8mm 10mm 13mm 17mm 19mm 22mm 24mm 27mm 30mm 32mm 36mm 46mm hex key size 3 mm 4mm 5mm 6mm 8mm 10mm 12mm 14mm 14mm 17mm 17mm 19mm 22mm 1 1 1 2 5 8 3 4 3 4 7 8 7 8 1 4 1 2 1 2 2 2 7 8 16 1 4 5 8.
Allen key also known as hex key hexagon key socket key ln key sizes and its dimensions can be very handy while designing and selecting fasteners for your application.
Substituting uncommon hex sizes.
Metric standard parallel keyway and key sizes shaft diameter mm keyway mm key mm from to width w depth h width w depth t 6 8 2 1 0 2 2 9 10 3 1 4 3 3 11 12 4 1 8 4 4 13 17 5 2 3 5 5 18 22 6 2 8 6 6 23 30 8 3 3 8 7 31 38 10 3 3 10 8 39 44 12 3 3 12 8 45 50 14 3 8 14 9 51 58 16 4 3 16 10.
3 32 9 aw58250 3 16 9 aw58260 7 64 9 aw58252 7 32 9 aw58262 1 8 9 aw58254 1 4 9 aw58264 9 64 9 aw58256 5 16 9 aw58266 5 32 9 aw58258 3 8 9 aw58268.
These sizes are 1 mm 1 25 mm 3 5 mm 4 5 mm 5 5 mm 7 mm.
Thread metric d thread length b head diameter dk min dk max head high k min k max key width s nominal s min tmin.
Dimensional table of allen din 912 bolt.
Lastly there s one other added benefit to having both sae metric hex keys.
15 new final allen keys final author.
Their purpose is largely to serve specialized applications where size constraints and strength requirements need to be met.
These dimensions of allen keys can be used to check the accessibility of your bolts were space is limited.
While these metric allen key sizes do exist they rarely appear in your basic allen wrench sets.