New MILITARY & PARAMILITARY screw sizes

DrtyHarry

DrtyHarry

Joined
Jul 14, 2010
Messages
367
SCRATCH this...my math is off. I will come back when I have it right...this is nuts!
 
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I use a t9 wiha on my PM2 pivot screws and t8 on the handle screws. On the military, it's a t10 for the pivot screw.
 
The torx head size on the heads don't matter...they can even have phillips heads for I care. It's getting the right size that's the issue. I went ahead and ordered a couple different sizes, once I confirm what is what...I'll post back. Upon searching, I found out a LOT of people where looking for this info.


Harry
 
ejames13 said:
I thought the torx size for PM2 pivot screws was T10...
Click to expand...

T10 is correct...but I think T15 will be needed on the aftermarket screws. I will know for sure in a few days and make a chart for easier reference.



Harry
 
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The pivot screw on the Blurple S110 Millie is a #8X32TPI wafer head screw with a #15 TORX recess. The length under the head is about .170" or 11/64th. The dingus on the other side of the pivot is a slab sided T-nut that is not supposed to turn in the hole. Even though the T-nut has #15 TORX recess, DON'T TRY TO TURN IT. The T-nut on my knife is on the clip side. You can use the TORX bit to hold the T-nut while you loosen the pivot screw. That might save wear and tear on the D-holes in the liners.
 
tiguy7 said:
The pivot screw on the Blurple S110 Millie is a #8X32TPI wafer head screw with a #15 TORX recess. The length under the head is about .170" or 11/64th. The dingus on the other side of the pivot is a slab sided T-nut that is not supposed to turn in the hole. Even though the T-nut has #15 TORX recess, DON'T TRY TO TURN IT. The T-nut on my knife is on the clip side. You can use the TORX bit to hold the T-nut while you loosen the pivot screw. That might save wear and tear on the D-holes in the liners.
Click to expand...

Good to know! I measured the pivot screw on the PM2 and it's the same length as the scale screw. The pivot screw is wider than the scale screw (4-40) and since I was not sure if the pivot was one or two sizes up, I ordered both 8-32 and 6-32. For $2...didn't mind.

As for the PIVOT on the NEW Millies, glad to know they are 8-32. The shortest ones I found are .1875"....not sure where I can find .170". The difference isn't that great....perhaps I can modify the screw. As for the type of head, I found PHILLIPS & TRUSS heads. Not sure if it matters, but I'm sure the diameter of the head makes a difference. The head sizes I found are both .370 and .375. Do you know what size the heads are? I'll try and see if I can find them in .170". Would you know where to look? It would be nice to find them in titanium...

Thanks for the input! Did you measure the screws or did you get the information elsewhere? Not sure if the difference between .1875 and .170 will matter. But if .170" are available, I'd rather be safe than sorry.



Harry
 
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.1875" is 3/16". You can shorten the screw by grinding it with a nut on it and restoring the thread by backing the nut off. If I were you, I would look for the proper TORX screws. Phillips bits tend to cam out when you reef on them. Knife maker suppliers should have the right stuff.
I measured the pivot screw. Do you also need the head diameter? Truss is a head shape. Phillips is a recess shape.
 
Yeah...I found some screws that are 3/16 (.1875) but none that are .170" or 11/64th. I would prefer TORX for the pivot, as for the scales...I don't mind as I will loctite them when in. KnifeMaker and KnifeKit really don't have much of what I need. I found that www.albanycountyfasteners.com has A LOT more to pick from. KM and KK don't have much in 3/16...be it 4-40, 6-32, 8-32. But again, not even sure if 3/16 will work (.1875) since you said the screws measure .170". A couple passes on a file and I'm sure I can shorten them.

The screws I ordered though for the PM2 are far too long, they measure .25" so when they arrive....I'm returning them. I read that they were 4-40 .25". Nope...I checked and they are closer to 3/16". I found these...but not sure if they will work.

http://www.albanycountyfasteners.co...-304-Stainless-Steel-p/38000.htm?1=1&CartID=1

or with Philips...

http://www.albanycountyfasteners.co...ide-Stainles-p/1016-73000000.htm?1=1&CartID=2


But again...not sure if 3/16" will fit. They are flat heads, and the head size for the Philips are Max 0.225 - Min 0.195, and Max 0.225 - Min 0.218 for the TORX.

I should have measured myself before ordering the .25"....silly mistake.
 
tiguy7 said:
.1875" is 3/16". You can shorten the screw by grinding it with a nut on it and restoring the thread by backing the nut off.
Click to expand...

I missed this....never thought about that. I'll give it a try with the .25" screws when they arrive. Thanks!!
 
The Klein 1001 electrician's pliers has a screw cutter built into it. Looking at Albany, I think you want the TORX pan head screws in 18-8 stainless steel. If the head is too large, you can chuck up the screw in an electric hand drill and spin grind it against a grinding belt or wheel.
Flat head screws are measured from the top of the head to the end of screw. Pan head screws are measured from under the head to the end of the screw. I don't think you are looking for a flat head screw for the Millie pivot.
 
tiguy7 said:
The Klein 1001 electrician's pliers has a screw cutter built into it. Looking at Albany, I think you want the TORX pan head screws in 18-8 stainless steel. If the head is too large, you can chuck up the screw in an electric hand drill and spin grind it against a grinding belt or wheel.
Flat head screws are measured from the top of the head to the end of screw. Pan head screws are measured from under the head to the end of the screw. I don't think you are looking for a flat head screw for the Millie pivot.
Click to expand...

Have not started looking for a new Millie pivot screw. So you think I should get a torx head 18-8 screw is SS? What size? Can you post a link or an item #? THANKS!

Harry
 
The screw I think you want is a #8X32TPI pan head 1/4" long or longer since you will probably be trimming it to size. The pliers mentioned above make trimming an easy task. The composition of the screws in the Albany list is 18% Chrome and 8% Nickel. 18-8 stainless steel is highly resistant to corrosion and is often used in cookware.
 
tiguy7 said:
The pivot screw on the Blurple S110 Millie is a #8X32TPI wafer head screw with a #15 TORX recess. The length under the head is about .170" or 11/64th. The dingus on the other side of the pivot is a slab sided T-nut that is not supposed to turn in the hole. Even though the T-nut has #15 TORX recess, DON'T TRY TO TURN IT. The T-nut on my knife is on the clip side. You can use the TORX bit to hold the T-nut while you loosen the pivot screw. That might save wear and tear on the D-holes in the liners.
Click to expand...

You are saying the D shaped hole in the stainless liner is on the Clip side?
The pivot pin has a D shape or flat on the diameter to fit this hole?

Regards,
FK
 
The following is a revision of post #8 above. I stated that the pivot pin was a T-nut. On closer inspection, the pivot assembly consists of a doubly stepped, slabbed barrel and 2 #8X32TPI pan head screws with #15 TORX recesses. Both liners have D holes that engage the slab to prevent rotation of the barrel. Additionally, the steps on either side of the barrel prevent pinching of the blade. Ordinarily a T-nut would slide out of the pivot hole. The steps on the barrel prevent the removal of the barrel with a screw in one side that simulates a T-nut.
I should have realized the difficulty of manufacturing a T-nut with a threaded blind hole, a slab, and a head with a struck TORX recess. Sorry for the misinformation.
 
tiguy7 said:
The screw I think you want is a #8X32TPI pan head 1/4" long or longer since you will probably be trimming it to size. The pliers mentioned above make trimming an easy task. The composition of the screws in the Albany list is 18% Chrome and 8% Nickel. 18-8 stainless steel is highly resistant to corrosion and is often used in cookware.
Click to expand...

In that case, since I have a few sizes in 1/4" (. 25") coming, guess I won't need to return them. Unless 3/16" will fit without having to cut anything? This is turning into rocket science! lol
 
Tiguy7,

Thanks for the revised observations.
The newest Military design is a nice improvement to the early models.

Regards,
FK
 
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