SP Screws and Threads ZDSPB.com > Tech index > SP screws and threads

This page lists the screw thread, size, and type being used by most markers and equipment made by Smart Parts. You might be able to find replacemen screws at your local hardware store if they are well-stocked, or find them online.

Terminology:
An example SAE screw type would be 10-32 x 1/2".
The first number (10) is the pitch diameter for that particular thread (diameter of the male screw in this case).
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 where/how the screw is being used.

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 3/8" button head, 5/32" hex socket
Trigger return spring set screw (all SP 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 [classic]:

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

Impulse 09:

Description: Screw thread: Screw type:
ASA screws (2) 10-32 x 3/16" socket head, 5/32" hex socket
Circuit board screws (3) 4-40 x 1/4" button head, 1/16" hex socket
Frame screws (2) 10-32 x 1/4" button head, 1/8" hex socket
Foregrip screw 1/4-28 x 1/2" socket head, 3/16" hex socket
Solenoid bracket screw 10-32 x 3/16" socket head, 1/8" hex socket
Solenoid positioning lock screw threads ?
Upper body rear screw 10-32 x 1/4" socket head, 1/8" hex socket
Upper body front screw (2) 4-40 x 3/16" socket head, 3/32" hex socket
Feedneck lock screw (2) ? Dogpoint set screw, 1/16" hex socket
Valve endcap threads ?
Ram endcap threads ?
Valve locking screw ?
Filter lock screw threads ?
Body air passage lock acrews ?
Regulator retaining screw ?
Trigger bearing screw (2) 8-32
Foregrip relief valve housing screw threads ?
Foregrip relief valve retaining screw threads ?
ASA knob threading 5/16"-18
Grip panel screws (4) 6-32 x 3/16" button head, 5/64" hex socket (phillips-head also works)
Barrel threading Impulse/Ion

Shocker SFT & Nerve:

Description: Screw thread: Screw type:
Common for both markers (Shocker SFT and Nerve):
Grip panel screws (4) 6-32 x 5/16" button head, phillips
Nerve stock frame or select Shocker frames, rear body screw 10-32 x 1/2" socket head, 5/32" hex socket
Nerve stock frame or select Shocker frames, trigger rest plate screw 6-32 x 5/16" button head, phillips
Note: "Select 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
Vertical adapter screw 1/4-28 x 1/2" socket head, 3/16" hex socket
Solenoid/manifold spacer screws, current (2) M1.6 x 0.35mm speciality high-profile socket head, 1/16" hex socket
Solenoid/manifold spacer screws, old (2) M1.6 x 0.35mm 1/8" external socket hex
Circuit board lock screws, old (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
Shocker SFT only:
Stock Shocker SFT frame/body screws (2) 10-32 x 11/16" button head, 1/8" hex socket
Body air transfer port screws (4) 4-40 x 3/32" 0.05" hex socket
Manifold/body screws (2) 4-40 x 1/4" button head, 1/16" hex socket
Bolt guide threads 1+1/4"-28 (1.25-28)
Barrel threading Shocker
Nerve only:
Front frame/body screw 10-32 x 11/6" button head, 1/8" 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, 3/32" hex socket
Manifold/body screws (2) 4-40 x 5/32" button head, 1/16" hex socket
Ram/hammer threads 12-28
Piston lock screw threads ?
LPR adjustment cap threads 9/16-28
Barrel threading Impulse/Ion

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) M1.6 x 0.035mm 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

Ion [classic]:

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 later bodies are Shocker)

Parts and Accessories:

Description: Screw thread: Screw type:
New Designz:
Shocker/Nerve/Ion trigger set screw threads 6-32 1/16" padded (nylon) hex socket
Shocker/Nerve trigger magnet cage threads 10-32
Custom Products:
CP vertical regulator adjustment screw 1/4-28 1/8" hex socket

Smart Parts Regulators:

Description: Screw thread: Screw type:
Max-Flo "manifold" regulator (Shocker Sport / Impulse classic):
Manifold-style Impulse vertical reg, housing set screws (2) 10-32 x 1/8" 3/32" hex socket
Manifold-style adjustment endcap lock screw 6-40 x ???? socket head, 7/64" hex socket
Bottomline manifold clamp screws (4) 10-32 x 1/2" socket head, 5/32" hex socket
Bottomline dovetail mounting rail set screws (5) 10-32 x 1/8" 3/32" hex socket
Bottomline 4500 system, sticker threads ? (custom screw)
ShockerSFT/Nerve vertical Max-Flo:
Note: These reglators were also sold on classic Impulses between 2004-2005.
Reg body set screws (1 or 2) 10-32 x 1/8" 3/32" hex socket
NXT/Ion vertical regulator:
Endcap safety screw 4-40 x 3/16" 3/32" hex socket
Spring platform set screw 10-32 x 1/8" 3/32" hex socket
Max-Flo Inline regulator (available between 2003-2005):
Manifold housing screws (4) 10-32 x 1.875" socket head, 5/32" hex socket
Smartvalve retaining set screw 4-40 x 5/8" 0.05" hex socket
Adjustment endcap lock screw 6-40 x ??? socket head, 7/64" hex socket
Max-Flo Micro preset regulator (available between 2005-2008):
Regulator housing set screws (2) ? x ? "Dogpoint" set screw, 3/32" hex socket

Parker K-series solenoids: (used on other markers too)

Description: Screw thread: Screw type:
Body mount screws (2) M1.6 x 0.35-mm x 16-mm button head, phillips drive
Endcap screws (2) M1.6 x 0.35-mm x 5-mm button head, phillips drive
Coil screws (2) M1.6 x 0.35-mm x 37-mm button head, phillips drive

Miscallaneous threads used by SP:

Description: Screw thread: Comments:
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
Bottomline screws (2) 10-32 x 1/2"+ Half-inch length seems to be an average compatible length
SP Q-lock clamping screw threads 6-40 Steel ball with a threaded stud sticking out one side
SP Vertical feedneck threading 13/16"-32 See CAD file post for more info.
NXT feedneck threading 7/8"-32 See CAD file post for more info.
SP threaded ball detent threads 3/8-16 Used on Shocker Sports (00-02), Shocker SFTs (03-06), Nerves, and classic Impulses
1/8" NPT air fittings 1/8"-NPT (27-tpi)
Standard HPA bottle threads 5/8"-18 class 2B Most bottles 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 See CAD file post for more info.
Impulse/Ion/NXT/Luxe barrel threads 15/16"-12 double lead See CAD file post for more info.
Shocker barrel threads 15/16"-16 double lead See CAD file post for more info.
SP barrel front threads 7/8"-32 double lead See CAD file post for more info.

Note about grip screws: Care must be taken when using any marker that has a circuit board located under the grips. Using screws of improper length can damage the internal if screwed too far. For instance, Shocker/Nerve/Ion use a factory screw with length of 5/16", which will cause board damage if your grip panels are thinner than the stock ones (examples include Hybrid, Dye, or SP pro-touch grips). I have found that a length of 3/16" is much better suited for thin hybrids, or 1/4" for Dye or Pro-touch grips. Washers or o-rings can be used to space out longer screws as a quick fix.

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, rather cut the threads on a lathe or interpolated mill operation.
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 without purchasing a custom-ground tap set.

Related Links:
CAD file post barrels page - barrel dimensions
SP barrel reference