| SP SCREWS AND THREADS | |
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Tech index -> Equipment Resources -> SP screws and threads
Local hardware stores oftentimes carry anywhere from a small to large assortment of screws, nuts, and other threaded items. Replacement screws for your equipment can be bought from many sources (I sell screws for most SP markers on here). This chart shows the screw tap size and screw characteristics used in SP markers.
An example screw type would be 10-32 x 1/2".
The first number (10) is the pitch diameter for that particular thread (this is one of the diameters of the screw, don't worry about which one in specific).
The second number (32) is the number of threads per inch.
The last number (1/2") is the length of the screw threads. To convert this to a decimal, just run the fraction through a calculator.
Also note that in these descriptions the "screw type" of the stock screws are listed. In some cases the screw head can be different, depending on the use.
Marker Screws:
| Shocker Sport: | ||||
| Description: | Screw thread: | Screw type: | ||
| Grip panel screws (4) | 6-32 x 3/8" | button head, phillips | ||
| Circuit housing screws (4) | 10-32 x 1/2 | socket head, phillips | ||
| Frame screws (2) | 1/4-20 x ? | button head, 5/32" hex socket | ||
| Trigger return spring set screw (all frames) | 1/4-28 x 1/4" | 1/8" hex socket | ||
| Air assist port threads | 10-32 | |||
| Fire piston housing chamber threads | 15/16-20 | |||
| Body manifold chamber threads | 1/8" NPT | |||
| Bolt tip threads | 10-32 | |||
| Barrel threading | Shocker | |||
| Impulse: | ||||
| Description: | Screw thread: | Screw type: | ||
| Grip panel screws (4) | 6-32 x 3/8" | button head, phillips | ||
| Frame/body screws (2) | 1/4-20 x 1" | low-profile socket head, 1/8" hex socket | ||
| Frame/circuit housing screws (2) | 6-32 x 5/16" | button head, phillips | ||
| Trigger pre-travel set screw (2002+ frames) | 1/4-28 x 1/4" | 1/8" hex socket | ||
| Trigger return spring set screw | 1/4-28 x 1/4" | 1/8" hex socket | ||
| Solenoid air transfer port screw | 4-40 x 3/32" | 0.05" hex socket | ||
| Vision ribbon screw | 2-56 x 1/8" | button head, 0.05" hex socket | ||
| Mainboard screws (2) | 2-56 x 5/32" | button head, phillips | ||
| Daughterboard screws (2) | ? x ? | socket head, phillips | ||
| Vertical adapter lock screw | 4-40 x 3/8" | socket head, 3/32" hex socket | ||
| Valve lock screw threads | 7/16"-20 | |||
| Vertical adapter screw, old (air fitting) | 1/8" NPS | vented socket head, 3/16" hex socket | ||
| Vertical adapter screw, new (ported adapter) | 1/4-28 x 1/2" | socket head, 3/16" hex socket | ||
| Stock bolt spring bearing set screw | 5/16-18 x 3/8" | 3/32" hex socket | ||
| Valve endcap threads | 1"-16 | |||
| Body manifold chamber threads | 1/8" NPT | |||
| Tapeworm fitting threads | 1/8" NPT | |||
| Ram/hammer threads | 12-28 | |||
| Barrel threading | Impulse/Ion | |||
| Shocker SFT: | ||||
| Description: | Screw thread: | Screw type: | ||
| Grip panel screws (4) | 6-32 x 5/16" | button head, phillips | ||
| Frame/body screws (2) | 10-32 x 11/16" | button head, 1/8" hex socket | ||
| PL frame, rear body screw | 10-32 x 1/2" | socket head, 5/32" hex socket | ||
| Note: "PL frames" include the 06 Dynasty, Dark, and Tonton frames. | ||||
| Trigger return magnet set screw | 1/4-28 x 1/4" | 1/8" hex socket | ||
| Stock trigger pre-travel set screw | 4-48 x 3/8" | 0.05" hex socket | ||
| Stock trigger post-travel set screw | 4-48 x 1/4" | 0.05" hex socket | ||
| Stock trigger firing point set screw | 4-48 x 3/8" | 0.05" hex socket | ||
| Vision ribbon screw | 2-56 x 1/8" | button head, 0.05" hex socket | ||
| Body air transfer port screws (4) | 4-40 x 3/32" | 0.05" hex socket | ||
| Vertical adapter screw | 1/4-28 x 1/2" | socket head, 3/16" hex socket | ||
| Manifold/body screws (2) | 4-40 x 1/4" | button head, 1/16" hex socket | ||
| Solenoid/manifold spacer screws, current (2) | ? x ? | speciality high-profile socket head, 1/16" hex socket | ||
| Solenoid/manifold spacer screws, old (2) | ? x ? | 1/8" external socket hex | ||
| Circuit board lock screws (2) | 2-56 x 1/8" | socket head, 5/64" hex socket | ||
| Note: The old manifold screws and attaching circuit board lock screws are no longer used. | ||||
| Solenoid insert chamber threads | 1/4-28 | |||
| Bolt guide threads | 1 1/4-28 | |||
| Barrel threading | Shocker | |||
| Shocker NXT: | ||||
| Description: | Screw thread: | Screw type: | ||
| Grip panel screws (4) | 6-32 x 5/16" | button head, 5/64" hex socket (phillips-head also works) | ||
| Trigger stop retaining screw | 6-32 x 5/16" | button head, 5/64" hex socket | ||
| Frame/body screws (2) | 10-32 x 1/2" | socket head, 5/32" hex socket | ||
| Stock trigger adjustment set screws | 4-48 x 3/8" | 0.05" hex socket | ||
| Eye cover screws (2) | 3-48 x 5/32" | button head, 1/16" hex socket | ||
| Body air transfer port screws (4) | 4-40 x 3/32" | 0.05" hex socket | ||
| Vertical adapter screw | 1/4-28 x 1/2" | socket head, 3/16" hex socket | ||
| Manifold/body screws (2) | 4-40 x 1/4" | button head, 1/16" hex socket | ||
| Solenoid/manifold spacer screws, current (2) | ? x ? | speciality high-profile socket head, 1/16" hex socket | ||
| Solenoid insert threads | 1/4-28 | |||
| Bolt guide threads | 1 1/4-28 | |||
| Board pin threads (2) | 4-48 | |||
| Powerswitch actuator pin threads | 4-48 | |||
| Trigger pin threads | 8-32 | |||
| Bottomline dovetail rail set screw | 10-32 x 5/16" | 3/32" hex socket | ||
| Barrel threading | Impulse/Ion | |||
| Vertical feedneck threading | NXT threads | 55/64-32 threading (technically...) | ||
| Nerve: | ||||
| Description: | Screw thread: | Screw type: | ||
| Grip panel screws (4) | 6-32 x 5/16" | button head, phillips | ||
| Trigger rest plate screw | 6-32 x 5/16" | button head, phillips | ||
| Front frame/body screw | 10-32 x 11/6" | button head, 1/8" hex socket | ||
| Rear frame/body screw | 10-32 x 1/2" | socket head, 5/32" hex socket | ||
| Trigger return magnet set screw | 1/4-28 x 1/4" | 1/8" hex socket | ||
| Stock trigger pre-travel set screw | 4-48 x 3/8" | 0.05" hex socket | ||
| Stock trigger post-travel set screw | 4-48 x 1/4" | 0.05" hex socket | ||
| Stock trigger firing point set screw | 4-48 x 3/8" | 0.05" hex socket | ||
| Vision ribbon screw | 2-56 x 1/8" | button head, 0.05" hex socket | ||
| LPR lock screws (2) | 4-40 x 1/8" | 0.05" hex socket | ||
| Bolt carriage bearing set screw | ? x ? | 3/16" hex socket | ||
| Bolt carriage knob screws | 4-40 x 3/8 | socket head, ? hex socket | ||
| Vertical adapter screw | 1/4-28 x 1/2" | socket head, 3/16" hex socket | ||
| Manifold/body screws (2) | 4-40 x 5/32" | button head, 1/16" hex socket | ||
| Solenoid/manifold spacer screws, current (2) | ? x ? | speciality high-profile socket head, 1/16" hex socket | ||
| Solenoid insert threads | 1/4-28 | |||
| Ram/hammer threads | 12-28 | |||
| Piston lock screw threads | ? | |||
| Barrel threading | Impulse/Ion | |||
| Ion: | ||||
| Description: | Screw thread: | Screw type: | ||
| LP hose air fitting threads (3) | 10-32 | |||
| Breech/vertical adapter screw | 10-32 x 1/2" | flat socket head, 1/8" hex socket | ||
| Frame screws (2) | 10-32 x 1" | button head, 1/8" hex socket | ||
| Stock trigger post-travel set screw | 4-48 x 1/4" | 0.05" hex socket | ||
| Trigger return magnet set screw | 1/4-28 x 1/2" | 1/8" hex socket | ||
| Grip panel screws (4) | 6-32 x 5/16" | button head, phillips | ||
| Barrel threading | Impulse/Ion | |||
| pneuVentures Shocker: | ||||
| Description: | Screw thread: | |||
| Front frame screw | 1/4-20 x 1-3/16" | |||
| Rear frame screw | 10-32 x 1/2" | |||
| Trigger guard screw | 10-32 x 1/2" | |||
| Solenoid mount screws (4) | 4-40 x 11/16" | |||
| Note: All pVI Shocker screw lengths are my estimates only. | ||||
| Barrel threading | Autococker/Shocker | (Most seem to be Autococker, some bodies are Shocker) | ||
Parts and Accessories:
| New Designz: | ||||
| Description: | Screw thread: | Screw type: | ||
| Trigger set screw threads | 6-32 | 1/16" padded (nylon) hex socket | ||
| Shocker/Nerve trigger magnet cage threads | 10-32 | |||
| Vertical regulators: | ||||
| Description: | Screw thread: | Screw type: | ||
| Manifold-style Impulse vertical reg, housing set screws (2) | 10-32 x 1/8" | 3/32" hex socket | ||
| Manifold-style Impulse vertical reg, adjustment endcap lock screw | ? x ? | socket head, ? hex socket | ||
| Shocker/Nerve vertical reg, housing set screws (1 or 2) | 10-32 x 1/8" | 3/32" hex socket | ||
| Note: This also includes the new-style Max-Flos that came on Impulses in 2005 and later. | ||||
| NXT/Ion reg, endcap safety screw | 4-40 x 6/32" | 3/32" hex socket | ||
| NXT/Ion reg, spring platform set screw | 10-32 x 1/8" | 3/32" hex socket | ||
| Bottomline regulators: | ||||
| Description: | Screw thread: | Screw type: | ||
| Max-Flo manifold, manifold clamp screws (4) | 10-32 x 1/2" | socket head, 5/32" hex socket | ||
| Max-Flo manifold, mounting bracket set screws (5) | 10-32 x 1/8" | 3/32" hex socket | ||
| Max-Flo manifold, adjustment endcap lock screw | ? x ? | socket head, ? hex socket | ||
| Max-Flo manifold, input seal threads | ? | ? hex stocket | ||
| Max-Flo Inline, manifold housing screws (4) | 10-32 x 1.85" | socket head, 5/32" hex socket | ||
| Max-Flo Inline, smartvalve retaining screw | 4-40 x 5/8" | 0.05" hex socket | ||
| Max-Flo Inline, adjustment endcap lock screw | ? x ? | socket head, ? hex socket | ||
| Max-Flo Micro, regulator housing set screws (2) | ? x ? | Dogbite set screw, 3/32" hex socket | ||
| SP S-rail set screws (2) | 10-32 x 5/16" | 3/32" hex socket | ||
| SP angle drop set screw | 10-32 x 1/4" | 3/32" hex socket | ||
| Parker K-series solenoid: | ||||
| Description: | Screw thread: | Screw type: | ||
| Body mount screws (2) | M1.6 x 0.35 x 16-mm | button head, phillips | ||
| Endcap screws (2) | M1.6 x 0.35 x 5-mm | button head, phillips | ||
| Coil screws (2) | M1.6 x 0.35 x 37-mm | button head, phillips | ||
Miscallaneous:
| Description: | Screw thread: | Comments: |
| Bottomline screws (2) | 10-32 x 1/2"+ | Half-inch tends to be an average length; other lengths will also work. |
| SP Q-lock screw threads | 6-40 | Speciality screw with a round head |
| SP Vertical feedneck threading | 13/16-32 | Used on Shocker Sport (00-02), Shocker SFT (03-06), Impulse, Nerve, Ion/Epiphany, ICD Bushmaster, PMI Piranha (new-style), Omen, and Invert. |
| SP Ball detent threading | 3/8-16 | Not used on Ions, Shocker NXTs. |
| 1/8" NPT air fittings | 7/16-27 aka. 1/8"-27 |
For drilling, use size R drill for the NPT tap. |
| Standard HPA tank threads | 5/8-18 class 2B | Most tanks use these threads, however not all. |
| ASA threads | 1/2 NPS | Female threads only. The opposing male threads are smaller to allow clearance. |
| Autococker barrel threads | 15/16-20 | Before drilling, bore diameter 0.88" to a depth of 1.24" (what's what I do, anyway). The exact diameter isn't that important. |
| Impulse/Ion barrel thread | 15/16-12 double lead | Spec |
| Shocker barrel thread | 15/16-16 double lead | Spec |
Note about grip screws: The Shocker/Nerve/Ion stock length of 5/16" may damage circuit components within the frame if unusually thin grip panels are used (such as Hybrid, or Dye to a certain extent). I have found that a length of 3/16" is much better suited for the thin hybrids, or 1/4" for Dye grips. Washers can be used to space out longer screws.
Note about barrel threads: The exact profile of the threading may be different than the theoretical measurement (example 15/16-16 DL). This is due to the manufacturer compensating for anodizing layers (which add a layer of material and change the measurements). Generally 0.003-0.005" is added to the diameter to prevent the barrel from locking up.
Repairing Stripped Female Threads:
It appears to be a slight misconception that threads can be "retapped" for future use. In order to tap metal, there first needs to be metal to tap into in the first place. If the threads are stripped then that metal will have already been removed.
Because of this, when a thread is stripped out, you need to tap it for the next screw size larger. This can be a larger diameter screw or possibly the same screw with less threads-per-inch, if the new threads are substantially larger.
Speciality Taps / Thread-Cutting Methods:
Most screws used on markers are standard and can be bought in stores so you can tap yourself, by hand or by machine. However, the threads on larger holes are often "specialty" sizes, which are uncommon, and thus taps for them aren't made for the public to use. Taps to accomidate large threads like this are only custom-made for the manufacturer in large quantities so they can use them on their markers in production. Additionally, depending on the part, the company might not even use a tap for the hole. For instance, a Shocker SFT's barrel thread and bolt guide thread are cut into the body on a lathe while it is being machined, they don't use a tap for those parts of the gun.
Airsoldier.com does carry some specialty taps, such as Autococker threading and Angel feedneck threading, however other than that you won't be able to find a tap or die for specialty thread sizes.
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