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Database for Hardware-Related Airsoft Parts

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Airborne has asked me if I could transfer this list from my original posting place ASR to share with the people of ASF. Why not? :P


All usernames listed below are ASR members, NOT ASF members.


In my experience I noticed that a LOT of normal hardware parts (electrical, plumbing, etc) can all be used for airsoft applications ranging from compression fixes, mock suppressors, and even spring spacers. It's disgusting how much airsoft retailers/manufacturers make off of simple parts you can replace with just stuff you can find at hardware stores. I think it'd be great to list a few parts that will help many airsofters on the forums. If you have something to add, please post :D.


I have added personal notes to whether they have worked for me or not.


From McMaster-Carr (mcmaster-carr.com)


Piston X-rings (Non-Boreup)

Part 6540K167 (Viton) - $9.06 for pack of 10

Part 90025K238 (Duro) - $12.72 for pack of 100


Note: Vitons CONFIRMED working. However, Duro results from one user has shown completely failure in compression for multiple guns. Until further notice/further testing from other members, please refrain from buying the Duro ones. Plus, the Viton ones are better


Piston X-rings (Boreup) - courtesy of sdobbins

Part 6540K141 (Viton) - $9.93 for pack of 10

Part 90025K244 (Buna) - $13.00 for pack of 100




Cylinder X-rings (Non-Boreup)

Part 6540K129 (Viton) - $12.67 for pack of 25

Part 90025K361 (Buna) - $12.06 for pack of 100


Note: Might not fit some, as the diameter needed is in metric (MMC doesn't provide metric for O-rings).


Cylinder X-rings (Boreup)

Part 6540K166 (Viton) - $12.67 for pack of 25

Part 90025K362 (Buna) - $12.10 for pack of 100


Note: Not confirmed


More O-rings can be found here: http://forums.airsoftmechanics.com/index.php?topic=3214.0


AEG M4 Charging Handle Enhanced Return Springs

Part 9654K416 (1-1/2" L, 7/32" OD, 0.023" Wire) - $7.53 for pack of 12


These are basically the return springs for AEG M4 charging handles - a LOT stronger than stock ones. Handles with these springs will now return faster and will not deform over time/heavy usage. CONFIRMED working.


Small Size Metric Allen Wrenches

Part 7289A31 (0.7mm Hex, 1-5/16") - $0.15 each

Part 7289A32 (0.9mm Hex, 1-5/16") - $0.15 each

Part 7289A33 (1.3mm Hex, 1-3/4") - $0.12 each

Part 7289A11 (1.5mm Hex, 1-3/4") - $0.18 each


0.9mm is used most for GBB small grub screws (such as in the TM 5-7 and KWA MP7), while 1.5mm and 1.3mm is used mostly for flash hider grub screws and other miscellaneous items. 0.7m are for very smaller screws such as G18 AEP's and the like. All CONFIRMED working.


GBB Fill Valve O-rings

Part 9452K111 (AS568A-001) - $1.87 for pack of 100

Part 9452K311 (AS568A-001-1/2) - $2.82 for pack of 100

Part 9452K112 (AS568A-002) - $1.87 for pack of 100


Note: -001 is confirmed to fit TM fill valves, but unfortunately they caused filling issues so I took them off - use with caution. I haven't used -002 yet, but I suspect they can be used for larger valves (I.e. 40mm grenades). Also, the use of needlenose tweezers to stretch the O-ring is absolutely necessary - McMaster sells those as well if you don't have any already.


On a sidenote, user Karab has informed me that he managed to use -002 O-rings for his KWA M9 PTP just fine - this technically should mean it will work with other KWA magazines, but do take that advice with a grain of salt.


More O-rings can be found here: http://forums.airsoftmechanics.com/index.php?topic=3214.0


Flash Hider/Misc. 1.5mm Grub Hex Screws

Part 91390A099 (M3, 1.5mm x 5mm) - $4.77 for pack of 100


These are general grub/hex screws you find for flash hiders and other small items that require locking with something.


Note: CONFIRMED working.


Spare Gearbox Screws (+ head) - Courtesy of ImmortalZod

Part 92000A118 (M3, 8mm) - $4.35 for pack of 100

Part 92010A126 (M3, 16mm) - $7.03 for pack of 100


The 8mm screws will be for the top screws (those on top of the cylinder assembly), while the 16mm ones will be for the rest (they are conical so will fit flush with the gearbox's externals).


Note: CONFIRMED working by ImmortalZod.


BAR-10 Scope Rail Screws - Courtesy of ctres94


Part 92855A313 (M3, 12mm) - $3.83 for pack of 25


Quote from: ctres94 on August 16, 2011, 04:26:08 PM

Part #92855A313 m3 screws in 12mm length for Bar 10 scope rail. You might want to note that any m3X12 screw with a .5mm pitch will work, the ones I got were simply the cheapest and are silver as opposed to black. These work perfectly and screw in really smoothly. I got these because my stock ones were only 8mm and were to short.



Note: CONFIRMED working by ctres94.


Angle of Engagement Piston Adjustment Nylon Spacers

Part 95606A180 (0.028"-0.034" thick) - $7.52 for pack of 100

Part 95630A445 (0.027"-0.035" thick) - $4.39 for pack of 10 (thanks grmash)


Note: CONFIRMED working.


The 2nd listing is for a bushing that covers the entire area of the piston head. The 1st one is for a bushing that just goes around the outer diameter of the piston. The 1st one is cheaper, but it might allow for possible spacer movement - the 2nd one is preferred.


Here is a picture showing what I mean - A180 on the left, A445 on the right.




Polyurethane/Sorbothane Pads

Part 8514K51 (1/8" thick, 40/50/70D) - $4.85 for 4" x 4" sheet

Part 8514K52 (3/16" thick, 40/50/70D) - $5.37 for 4" x 4" sheet

Part 8514K53 (1/4" thick, 40/50/70D) - $6.44 for 4" x 4" sheet


D refers to durometer, or how hard the material is. Harder durometers are suggested for stronger springs (over 400fps) and softer ones are suggested for weaker springs. Do note with thicker pads, you may need to short stroke and do AoE adjustments for the piston.


Note: CONFIRMED from other sources, however I will most likely do some tests of my own to make sure. Standby for further testing.


TPE - Polyethylene - Courtesy of meancivicsi

Part 8657K112 (1/8" thick, 42-66D) - $3.66 for 12" x 12" sheet

Part 8657K113 (3/16" thick, 42-66D) - $5.31 for 12" x 12" sheet

Part 8657K114 (1/4" thick, 42-66D) - $7.39 for 12" x 12" sheet

Part 8619K441 (1/8" thick, 62-69D) - $4.03 for 12" x 12" sheet

Part 8619K451 (3/16" thick, 62-69D) - $5.66 for 12" x 12" sheet

Part 8619K461 (1/4" thick, 62-69D) - $7.36 for 12" x 12" sheet


Read here for more info: http://www.airsoftretreat.com/forums/index.php?topic=72093.0


TPE = thermoplastic elastomer. The lowest durometers I found were under polyethylene, so hopefully these could work. Same mods are applied to TPE as with sorbothane/polyurethane.


NOTE: Above TPE were tested by utc_pryo and are not soft enough to register as an effective damper product. I'll research around and find an alternative, but in the meantime, don't get it.


Hopup Resistance O-Rings - Courtesy of TehFish

Part 2418T117 (Duro, -11, Medium-Soft, Milspec) - $9.97 for pack of 115

Part 1879T17 (Duro, -11, Hard) - $2.96 for pack of 100


Read here for more info: http://www.airsoftretreat.com/forums/index...36432#msg436432


I have 2 options for the -11 O-ring since TF mentioned they should be soft, but the only ones that are med-soft are MilSpec ones - Std ones are hard/very hard.


User Maydie has claimed to also use #6 O-rings from his local hardware store for the same mod.


Note: CONFIRMED, at least the 1st part was. I use these on my Recce rifle, and the durometer is soft enough to where you can adjust it easily with a number of O-rings. I would suggest the 1st over the 2nd.


40mm Grenade Bearings

Part 9528K12 (5/32", for Madbull or larger-bearing grenades) - $3.15 for pack of 100

Part 9292K33 (3mm, for KA/Moscart or smaller-bearing grenades) - $6.05 for pack of 100


Grenade reset valve bearings for any 40mm gas grenade.


Note: Larger sizes CONFIRMED working. Smaller sizes were confirmed by Lon3Wo1f.


Tappet Plate Bearings - Courtesy of sdobbins

Part 9292K31 (Alloy Steel, 2mm) - $6.16 for pack of 100

Part 1598K18 (Stainless Steel, 2mm) - $10.60 for pack of 250

Part 9614K71 (Delrin, 2mm) - $1.68 for pack of 100


Read here for more info: http://www.airsoftretreat.com/forums/index.php?topic=77728.0


Motor Connectors, Double Crimp

Part 69525K59 - $1.47 for pack of 10 (16-14AWG wiring), $5.71 for pack of 100


Note: All CONFIRMED working, basically exact same size as those found in AEG's, but a lot tougher than stock/ACM ones.


Right-Angle Motor Connectors

Part 7769K31 - $1.56 for a pack of 10 (18-22AWG wiring), $6.76 for a pack of 100

Part 7769K33 - $1.56 for a pack of 10 (14-16AWG wiring), $6.76 for a pack of 100


Similar to previously mentioned motor connectors, simply already bent for you.


Note: CONFIRMED via other sources.


M249 Feeding Springs/Tubes - Courtesy of killbucket

Part 9664K49 - $3.36 for 3 feet

Part 3038K192 - $11.60 for 10 feet


Read here for more info: http://www.airsoftretreat.com/forums/index.php?topic=66101.0


Note: Do not have M249, but via killbucket's thread this will work.


1/16''-thick RDS/Scope Plexiglass Protectors

Part 8574K24 - $4.07 for 12'' x 12''

Part 8574K38 - $6.94 for 12'' x 24''

Part 8574K51 - $12.42 for 24'' x 24''


Note: CONFIRMED working.


Wire Mesh (Perforated Steel) - 41% Viewing Area

Part 9255T251 - $39.73 for 36" x 40"


Same mesh that Bitter End uses in their mesh goggles - perforated steel (VERY strong), and NOT woven mesh. However I cannot endorse that these provide better protection than ANSI-approved lenses for googles; use at your own risk.


Note: Never attempted, though uscmCorps of Arnie's has used it on a "Heat" mask.


Hardware Store Items (Home Depot, Lowe's, etc.)


Mock Mock MOCK mock mock mock mock mock mock mock mock mock mock mock mock mock suppressors

1.5"/1.25" PVC/CPVC/Aluminum tubing for outer cover, 0.25" PVC/CPVC/Alum tubing for inner "outer" barrel.


Best to mold over stock flash hider - there are multiple threads about making mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock suppressors. If you need help please post in this thread.


I find that 1" PVC works best, along with some tough CD's - the result is lightweight, yet tough. Use JBWeld to glue sections together. BE CAREFUL not to apply stresses to this, I.e. swing it around corners or hit doors with it, as the extra stress will cause the mock mock mock mock mock mock mock mock mock mock silencer to break.


Spacers (from 1/4'' to 1'1/2'')

Spring spacers can work in both springers and AEG's (not recommended). Mainly for use in spring guns/rifles. Look at your local store for "brass compression sleeves", like this one:



Note: CONFIRMED working, both on DPMS A-15 and Hardballer in the far far past .


Barrel Threading Nuts

If you need nuts for your own custom flash hider or mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock mock suppressors, Katatonia has suggested 9/16" nuts or, if metric, 14mm. The actual measurement is 14mm, but this is the closest English measurement; if you have access to metric ones, that's better.


JG Bar-10 Stock Screws - Courtesy to CottonTheMoth

Rear screw: #10-32 x 1-1/4" (Round Head slotted)

Front screw: #10-32 x 5/8" (Round Head slotted)


Note: One user has said that the gun will not :censored2: anymore with these screws attached. Please someone else confirm this.


You should be able to source these from Home Depot or anyone else that sells screws - just ask!


M4 Buffer Tube Screws

Quoted from PaperPlane (thanks):

I'm not sure if it is the same size for all other AEG's, but for my Echo 1 HK416, if you lost the bolt that connects/secures the buffer tube to the body, you can use part number (10-32) X 3in. I couldn't find any with phillips heads, but I just got the single slot head since I didn't really care.. There are 3 bolts per package, and 3 nuts. It's in a green small package, costs 98 cents, and it says "MACHINE" on the top. Can be found in the nail/screw/fasteners section at Home Depot.



Material 18-8 Stainless Steel

Inside Diameter 0.123"

Outside Diameter 0.178"


.003" 93574A180 $7.81 per Pack of 25

.005" 93574A182 $7.81 per Pack of 25

.007" 93574A184 $7.81 per Pack of 25

.010" 93574A186 $7.81 per Pack of 25

.020" 93574A188 $7.81 per Pack of 25


Material 18-8 Stainless Steel

Inside Diameter 0.125"

Outside Diameter 0.187"


.001" 99040A301 $7.81 per Pack of 25

.002" 99040A302 $7.81 per Pack of 25

.003" 99040A303 $7.81 per Pack of 25

.004" 99040A304 $7.81 per Pack of 25

.005" 99040A305 $7.81 per Pack of 25

.006" 99040A306 $7.81 per Pack of 25

.008" 99040A308 $7.81 per Pack of 25

.010" 99040A310 $7.81 per Pack of 25

.012" 99040A312 $7.81 per Pack of 25

.014" 99040A314 $7.81 per Pack of 25

.016" 99040A316 $7.81 per Pack of 25


Other Locations


Gearbox Ball Bearings - Courtesy of utc_pyro

8mm: 3x8x3mm flanged sealed bearings (3x8x3F)

7mm: 3x7x3mm flanged sealed bearings (3x7x3F)

6mm: 3x6x2.5mm flanged sealed bearings (3x6x2.5F)

AEP: 2.6x6x2.5mm flanged sealed bearings


For those who want to purchase their own ball bearing sizes, you can get these at Boca Bearings (www.bocabearings.com).


Any other items worth noting, please let me know! It's been a while since I updated, but if you give me suggestions I will add it to the list.

Edited by airborne101

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RSOV used to have those buffer tube screws made by hornbill but I can't seem to find it anymore. Not sure if I'm searching the wrong thing or something but I did see it a while back.

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1/16''-thick RDS/Scope Plexiglass Protectors

Part 8574K24 - $4.07 for 12'' x 12''

Part 8574K38 - $6.94 for 12'' x 24''

Part 8574K51 - $12.42 for 24'' x 24''


Note: CONFIRMED working.


Not Plexiglas, Polycarbonate.


Plexiglas = Acrylic


Polycarbonate = Lexan


Completely different things.

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But why is the Lexan-labeled one so much more expensive?


Lexan is a brand name for polycarbonate.


Plexiglas is the brand name for acrylic.


Polycarbonate = ingredient in bulletproof glass


Acrylic = brittle lightweight alternative to glass windows.

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Just a side note that I can confirm. You can you speaker wire (insulated and is tinted in a silver and a redish coat) as a wire extension. When I say speaker wire I mean the wire you use for wiring an amp to the speaker in your car usually. You can buy a walmart car audio wire set for about $35-40 (has lots of extra stuff you can't use I.e power cord, ground cable) or some walmarts have just the wire for cheaper. I used about a 5 inch length of cable to make the wires on my gearbox longer to reach my battery in the crane stock. You can probably buy the $40 wire set cut the chunck you need and return it. They never check and you get like 10 feet of it.

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Not sure if this was said, but I found screws for the GB and motor plate! Got them at Osh for $1.59 a pair in stainless steel. The screws are M3-.5 x any length. I got a bunch of packs of 12mm and 20mm screws then used some cutters to cut them down to size. From there I took a file and flattened out the end.


Replaced all the screws in my GB with them so I only have to use one screw driver to take apart the entire gun! Also replaced the G&G motor plate screws for the same reason.


Thought it would be helpful if you guys need GB and motor plate screws.


Edit: Forgot to mention that if your looking for wire, Navships on ebay has some great wire at a VERY cheap price. 25ft for about $10 shipped. All sorts of colors and gauges for everything and insulated in a tough PTFE insulation. Not to mention silver plated to boot!

Edited by pingupenguins

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Two more additions


Skateboard bearings (608) contain 7X 4mm ball bearings for 40 mm grenades


Bic disposable lighters use a spring to push up on the flint that is easily re-purposed as a reinforced loading nozzle spring for a Hi-Capa, all it needs is a slight clip

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Well I ordered the:


Part 8619K441 (1/8" thick, 62-69D) - $4.03 for 12" x 12" sheet


And it was NOT that rubber blue stuff. Instead it was:


Rigid HDPE Polyethylene 1/8" Thick, 12" X 12"


Piece of plastic... SuCks!! I ordered too fast, rushed to work and didn't notice.


Anyway that probably needs to be updated.

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