Screw size for older Lyman Receiver sight
- Thread starter JWFilips
- Start date
Pistolero
Well-Known Member
As long as it is just a mounting screw, and if you are going to drill and tap the reciever - you can
use whatever you want for pitch, since 6-48 is such an oddball size. Of course, if you already have
existing holes....gotta match them.
Strength-wise, 8-40 is 150% the stress area of the 6-48, so 1.5 times as strong.
Bill
use whatever you want for pitch, since 6-48 is such an oddball size. Of course, if you already have
existing holes....gotta match them.
Strength-wise, 8-40 is 150% the stress area of the 6-48, so 1.5 times as strong.
Bill
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Sorry for the curt answer. Firefox crashes on my tablet if I try to reply with actual words.
Not to be cheap and sneaky, but an inquiry with Lyman might just yield a pair of screws for free. "Our people" throw a lot of goodwill our way when we ask for help. Even if they quote you a price, the shipping will likely be way more than the screws - and they are weird screws which are going to be hard to find otherwise.
Now, I'm hanging in suspense to see just what kind of Mauser project you have brewing. I know you do amazing work, but when it comes to Mausers, they don't have to be pretty to me to be beautiful. A spray-painted "truck gun" stirs me almost as much as a sleek, European-looking sporter.
Not to be cheap and sneaky, but an inquiry with Lyman might just yield a pair of screws for free. "Our people" throw a lot of goodwill our way when we ask for help. Even if they quote you a price, the shipping will likely be way more than the screws - and they are weird screws which are going to be hard to find otherwise.
Now, I'm hanging in suspense to see just what kind of Mauser project you have brewing. I know you do amazing work, but when it comes to Mausers, they don't have to be pretty to me to be beautiful. A spray-painted "truck gun" stirs me almost as much as a sleek, European-looking sporter.
JWFilips
Well-Known Member
Jeff
The receiver sight is for a Mauser however I'm thinking of outfitting my model 38 Arisaka with it and refit the front sight of it with a Lyman globe front sight with a Lee Shaver aperture disk. This system works very well on my GEW 98 and makes for an accurate target rifle. The model 38 appears to be similarly accurate so I think I will enjoy it better with good sights I can shoot well.
Yes I will be drilling and tapping it
The receiver sight is for a Mauser however I'm thinking of outfitting my model 38 Arisaka with it and refit the front sight of it with a Lyman globe front sight with a Lee Shaver aperture disk. This system works very well on my GEW 98 and makes for an accurate target rifle. The model 38 appears to be similarly accurate so I think I will enjoy it better with good sights I can shoot well.
Yes I will be drilling and tapping it
My apologies for overlooking this for so long. I wasn't mad because it's a "Jap gun" instead of a Mauser. I've just been operating in a fog for a few days.
I'm even more interested now. My dad drug home a homely bubba'd Arisaka a couple years ago and seemed pretty interested in doing something with it. I'd love to see him make it a cast-bullet gun, but I've no room to talk regarding not getting around to finishing a gun project so I haven't pestered him.
That cute little case intrigues me. It's pushing similar weigh bullets at similar velocities to the 30-30 but at better sectional densities. I had an uncle who served in the South Pacific during WWII who would very seldom talked about that experience, but when he did, it was not heroic tales of bravery and honor. It was ugly and messy and most guys figured they'd never survive it. He had a very low opinion of the "Jap guns" because he had developed such profound respect for them. He wasn't scrutinizing chronograph readings and holes in paper.
By the way, this is meant as no disrespect, but at one time, that rear sight would have cost twice what the rifle did - maybe yours did. I remember when Arisakas, Carcanos and even Rolling Blocks were sold dirt cheap with the friendly (and serious) suggestion that "y' cud run a cord up through th' barrel and make a readin' lamp outa that pretty easy..."
I once bought a new-old-stock Williams receiver sight off eBay for $22 for a Remington 740 and made it fit a Rossi 92 357 Carbine. Going from curved to flat is easy though.
EDIT: Oh, shoot, I almost forgot this. There's an ACE Hardware in either of the two small towns north and south of me. ONE of the two actually carries gun screws! They don't have every conceivable configuration, but it's a nice assortment. Each I go in there to get anything else out of that wall of drawers, I include four or six gun screws and 10-32 and 8-32 set screws (in case I get a new LEE mould) and store them in a sectioned Plano lure box. It's saved my bacon (ok, saved a trip to town) numerous times.
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A lot of people don't realize that the post 64 Winchester Models 70 and 94, and the Remington 722 and Model 700 were CHEAPER and more easily manufactured rifles than their predecessors, yet look upon them as classic quality. There are no drain plugs in the axles on my Jeeps. The fill holes aren't even threaded - they're rubber plugs, just to save a few cents. It's not just within the last few years thing have gotten "cheaper."
I'm just musing - I know you guys know all that.
I've never broken a 6-48 screw.
I have broken a 6-48 TAP! Thankfully, a gunsmith friend bailed me out.
That would be enough for me to switch but I don't plan on D/T'ing many more guns. I have a few front sights to do some day but I'll make them match the existing 6-48 rear base/sight screws.
I go to lengths to ensure I have at least 4 to 4.5 threads' engagement with 6-48. It's a pain in the neck, but they are tiny. Seems everything comes with 6-48 holes or screws, so I roll with that. Last ones I cleaned up were on four Contender barrels, which came out to sixteen threaded holes I cleaned up with a bottom tap, sixteen screws I modified to get full threads all the way down and sixteen scope base holes I had to counter-bore deeper to get the already short (new) Weaver screws to give me more than 2 threads' engagement. Probably would have been less work to buy new screws and go up to 8-40.
Pistolero
Well-Known Member
I got a Pachmyr brand (IIRC), maybe Lyman, thinking a few seconds more.....gun screw assortment.
Different heads, and lengths in mostly 6-48 and 8-40. I don't use it often, but it is real handy when
I do. Good steel in them, too.
Any screw will develop full strength with 3 full threads engagement. Beyond that adds no strength
to the joint, assuming properly fitted threads. Loose, oversized holes.....not the case.
Bill
Different heads, and lengths in mostly 6-48 and 8-40. I don't use it often, but it is real handy when
I do. Good steel in them, too.
Any screw will develop full strength with 3 full threads engagement. Beyond that adds no strength
to the joint, assuming properly fitted threads. Loose, oversized holes.....not the case.
Bill
I can't control that part if I didn't D/T the hole myself. More surface area for Blue Loctite too.
Pistolero
Well-Known Member
I was getting a washer for a project today at the local hardware store, looking through
their many boxes of specialty screws, washers, parts, etc -- little plastic pull out trays
with divided compartments, standard fare.
BUT there were three new boxes. "Gun Screws" 6-48 through 8-40 and different head types,
and lengths --"gun blue finish". Didn't dig in, but will keep it in mind.
Bill
their many boxes of specialty screws, washers, parts, etc -- little plastic pull out trays
with divided compartments, standard fare.
BUT there were three new boxes. "Gun Screws" 6-48 through 8-40 and different head types,
and lengths --"gun blue finish". Didn't dig in, but will keep it in mind.
Bill
Pistolero
Well-Known Member
There is a company that puts out these sets of specialty screws, washers, spacers, thumbnuts, setscrews, and all sorts
of specialty hardware items. I am pretty sure the company is US, but not sure about their sources. All the stuff I
have gotten in the past was quality, but have not even looked at the gun screws.
Lots of good hardware stores have these racks of sliding trays, each has a plastic box with compartments sitting on
the pullout tray.
Bill
of specialty hardware items. I am pretty sure the company is US, but not sure about their sources. All the stuff I
have gotten in the past was quality, but have not even looked at the gun screws.
Lots of good hardware stores have these racks of sliding trays, each has a plastic box with compartments sitting on
the pullout tray.
Bill