User Panel
User Panel
User Panel
|
Posted: 5/13/2024 12:33:43 PM EDT
Okay, finding the correct split washer is giving me a headache. The ones I had were too thick (may have been Luth AR?) I ordered a few from AR15sport recently that claim to be to original spec, but they also seem too thick.
What is the actual size/dimensions of an original one? I found a number of old posts here, but still saw some pretty divergent numbers on thickness. Best case is find originals (I know there are some in the EE now, but $21 for a washer hurts. Not saying my OCD may not make me succumb, but I'd rather not.) Barring best case is there a commercial option that works and won't be obvious and look like poo? |
|
|
|
|
Posted: 5/13/2024 12:55:45 PM EDT
[#1]
The H&R ones from PSA and the Luth-AR ones are definitely too thick. I also purchased some from AR15sport for $3.50 each: https://ar15sport.com/product/flash-hider-lock-washer-arpart-71/
I got them last week and the thickness appears to be correct. The only difference is that they don't have knurling that some of the real ones did. |
|
|
|
|
Posted: 5/13/2024 1:09:41 PM EDT
[#2]
Hmm, okay I need to do a closer look at the ones I got from AR15sport then. They seemed thicker than the one old one I had in my parts bin (probably original, it was from the mid to late 80s when my Dad was building ARs).
Although it would be nice to know what the actual specs are to double check. I figure they ha e to be out there, I'm just not finding them. |
|
|
|
|
Posted: 5/13/2024 1:11:53 PM EDT
[#3]
Isn't original spec 1/8"?
|
|
|
|
SC, USA
|
Posted: 5/13/2024 2:02:55 PM EDT
[Last Edit: Shane733]
[#4]
https://imgur.com/a/LNFbJVa
https://www.wbparts.com/rfq/1005-00-992-7280.html We are willing to put the wrong barrel on our clones but we get hung up on a lock washer for weeks lol. Next will be the proper stainless steel 1/4 x 28" x 1" fillister head grip screw. |
|
|
|
Posted: 5/13/2024 2:03:18 PM EDT
[#5]
I dunno. I saw that listed but I also saw a variety of other thicknesses listed too. You could well be right, just trying to confirm.
I have a 14.7 pin and weld and it's just slightly too long for a bayonet to fit properly. The ring slides just past the rear of the flash hider. I'm guessing the combo of the touch longer barrel and a fat split washer? This was not the AR15sport one. Other guys have said a bayonet locks up fine on a 14.7. Only difference I can see is the washer in that case. It's not off by a lot, so that could potentially be it. |
|
|
|
|
Posted: 5/13/2024 2:06:02 PM EDT
[Last Edit: tstetz]
[#6]
Quote HistoryOriginally Posted By Shane733: https://imgur.com/a/LNFbJVa https://www.wbparts.com/rfq/1005-00-992-7280.html Awesome! You're the best, thats exactly what I needed! |
|
|
|
SC, USA
|
Posted: 5/13/2024 2:16:11 PM EDT
[#7]
AR15sport did have the correct ones at one time. Well, they at the least had a picture of the correct one. They had a picture of the package with correct part number, date, etc. https://ar15sport.com/product/nos-m16-flash-hider-lock-washer-retro-surp-fhwash/
|
|
|
|
Posted: 5/13/2024 2:42:04 PM EDT
[#8]
This is a Fulton Armory split washer , not sure if it thicker or thinner than what you have
 Attached File |
|
|
|
|
Posted: 5/13/2024 2:44:06 PM EDT
[#9]
Yep, they had new old stock at one point. They have repros now which look okay I think, but are like 1/8, 0.125 I believe. I'm going to double check after work.
I did throw calipers on some a couple weeks ago when I finished up some builds but didn't write down my numbers. Seeing that 0.11 though sounds right for the one old split washer I had. I know it was thinner than the new ones I got. I used the old one on my 601 and the newer one one GM Hydra Matic. |
|
|
|
GA, USA
|
Posted: 5/13/2024 3:11:06 PM EDT
[Last Edit: OTDR]
[#10]
Bought some of Brownell's repros a while back, they measure .119". Brownell's no longer list this part#.
Bought some of the gray ones from AR15sport, they measure .125". Tried measuring the one on my M16A1 repro built by US Ordnance, hard to measure on gun but it was much thinner, somewhere between .095 and .100. Later tonight I will try and dig out the old M16 drawings and find the spec. |
|
|
SC, USA
|
Posted: 5/13/2024 3:28:09 PM EDT
[#11]
I got mine from FA - https://www.fulton-armory.com/flashsuppressorlockwasherfa1and3-prongsuppressors.aspx They are .125 - .125.5
 I got some of them thick ones too. I got some from Sarco and not sure who else. They measure .180 - .180.5 They do have knurling. 
|
|
|
|
Posted: 5/13/2024 3:34:13 PM EDT
[#12]
I got some from Sarco as well as H&R and Luth-AR - they were all really thick and just looked wrong. While most consider it a minor issue, to me - the wrong width by a good margin just throws the look off. When we're talking about spending $40 for a reproduction safety selector simply because it has dimples on both sides, an extra $10 for the correct washer look doesn't seem like too much to invest.
|
|
|
|
|
Posted: 5/13/2024 4:00:19 PM EDT
[#13]
Couple of the old ones I have with the lines around the side are .107" thick.
I have another from somewhere maybe Brownell's that measures about what the other poster said thick and is a little bigger on the outside dimension also. |
|
|
|
|
Posted: 5/13/2024 9:36:26 PM EDT
[#14]
Quote HistoryOriginally Posted By jtb33: I got some from Sarco as well as H&R and Luth-AR - they were all really thick and just looked wrong. While most consider it a minor issue, to me - the wrong width by a good margin just throws the look off. When we're talking about spending $40 for a reproduction safety selector simply because it has dimples on both sides, an extra $10 for the correct washer look doesn't seem like too much to invest. I don't disagree, but where are the correct ones at! I still have 4 from AR15sport. They measured between 1.21 and 1.24. I looked at what was on my guns too. My original Colt M16A1 barreled upper's washer is definitely thinner. So is the one I used on my 601 that was in my parts box from my dad from the 1980's. The one I used on My GUU-5/A was a Luth AR I believe. It looks a little thicker than the AR15sport ones. Like OTDR said though, it's hard to try and measure them on the gun. |
|
|
|
LA, USA
|
Posted: 5/14/2024 2:17:28 PM EDT
[#15]
I got a handful of thin washers at the last Knob Creek. They were in a big trough at Model 1 Sales
And, here's your drawing from the Tech. Data Package: 
|
|
|
|
Posted: 5/14/2024 6:24:32 PM EDT
[#16]
Quote HistoryOriginally Posted By Dex223: I got a handful of thin washers at the last Knob Creek. They were in a big trough at Model 1 Sales And, here's your drawing from the Tech. Data Package: https://i.imgur.com/rSmP6au.png Oh, that's awesome! Thanks! (Now we all rush to put orders in at Model 1 Sales...) |
|
|
|
GA, USA
|
Posted: 5/14/2024 10:39:46 PM EDT
[#17]
Quote HistoryOriginally Posted By tstetz: Oh, that's awesome! Thanks! (Now we all rush to put orders in at Model 1 Sales...) 5 at 1 dollar each, worth a shot. |
|
|
|
Posted: 5/15/2024 9:39:17 PM EDT
[#18]
Okay, I ordered 10 since there was nothing else I needed right now. Figure if I get hosed on shipping I'll at least get 10 of them!
|
|
|
|
GA, USA
|
Posted: 5/15/2024 10:19:47 PM EDT
[#19]
Quote HistoryOriginally Posted By tstetz: Okay, I ordered 10 since there was nothing else I needed right now. Figure if I get hosed on shipping I'll at least get 10 of them! I got a USPS postal shipping label created notice lol, will be interesting to see what we get. |
|
|
GA, USA
|
Posted: 5/18/2024 4:50:15 PM EDT
[Last Edit: OTDR]
[#20]
Quote HistoryOriginally Posted By OTDR: I got a USPS postal shipping label created notice lol, will be interesting to see what we get. Got split washers today from "Model 1 Sales", measured .114, best i found so far. 
|
|
|
|
Posted: 5/18/2024 8:16:56 PM EDT
[Last Edit: j3_]
[#21]
Quote HistoryOriginally Posted By OTDR: Got split washers today from "Model 1 Sales", measured .114, best i found so far. https://i.imgur.com/jpZQrcQ.jpeg Curious how close the inside and outside dimensions are compared to the earlier posted drawing specs and tolerances? The only lock washer I have with a similar thickness is a little over on both but not terrible. |
|
|
|
GA, USA
|
Posted: 5/18/2024 8:34:19 PM EDT
[#22]
Quote HistoryOriginally Posted By j3_: Curious how close the inside and outside dimensions are compared to the earlier posted drawing specs and tolerances? The only lock washer I have with a similar thickness is a little over on both but not terrible.   
|
|
|
|
Posted: 5/18/2024 8:55:13 PM EDT
[#23]
Thanks. Hope they have plenty.
|
|
|
|
USA
|
Posted: 5/18/2024 9:44:05 PM EDT
[#24]
Quote HistoryOriginally Posted By OTDR: 5 at 1 dollar each, worth a shot. Says 2 each now. |
|
|
GA, USA
|
Posted: 5/18/2024 9:51:31 PM EDT
[#25]
Quote HistoryOriginally Posted By mtomso7464: Says 2 each now. Your looking at the listing for crush washers that are 2$ each, it confusing, they are still 1$ each. There are 3 listings for part#5, its the last one listed. |
|
|
|
Posted: 5/18/2024 10:40:25 PM EDT
[#26]
Ordered some, thanks. I been looking for the right split washer for awhile.
|
|
|
|
|
Posted: 5/19/2024 10:32:12 AM EDT
[#27]
Quote HistoryOriginally Posted By OTDR: Got split washers today from "Model 1 Sales", measured .114, best i found so far. https://i.imgur.com/jpZQrcQ.jpeg #OTDR Hard to tell from the pics, but are these washers gray or black? |
|
|
|
|
Posted: 5/19/2024 11:13:40 AM EDT
[#28]
|
|
|
|
GA, USA
|
Posted: 5/19/2024 12:12:12 PM EDT
[Last Edit: OTDR]
[#29]
Quote HistoryOriginally Posted By CAR-AR-M16: #OTDR Hard to tell from the pics, but are these washers gray or black? Black, not gray. Might be a hint of gray lol. |
|
|
|
Posted: 5/19/2024 4:03:35 PM EDT
[#30]
Quote HistoryOriginally Posted By OTDR: Black, not gray. Might be a hint of gray lol. Thanks for the info. |
|
|
|
|
Posted: 5/19/2024 6:46:44 PM EDT
[#31]
Okay, that sounds better than the other ones!
Mine are still on the way. |
|
|
|
GA, USA
|
Posted: 5/20/2024 12:51:33 PM EDT
[Last Edit: OTDR]
[#32]
In this picture my TV remote is gray for sure, washer on left is AR15sport.com advertised as parkerized gray, the Model 1 sales is on the right. Its a little darker, best I can do.
I need to dig out that washer on the left and see what that burr is all about.  |
|
|
|
Posted: Today 4:47:14 PM EDT
[#33]
Got my washers in. Mine measure 0.1075 to 0.109 it seems. I got ten of them.
|
|
|
|
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
Attached File