# Common Bolt / Screw Types on the Onefinity

**URL:** <https://forum.onefinitycnc.com/t/common-bolt-screw-types-on-the-onefinity/3057>\
**Category:** Hardware\
**Created:** [January 25, 2021, 11:47pm UTC](https://forum.onefinitycnc.com/t/common-bolt-screw-types-on-the-onefinity/3057 "2021-01-25T23:47:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\
**Post date:** [January 25, 2021, 11:47pm UTC](https://forum.onefinitycnc.com/t/common-bolt-screw-types-on-the-onefinity/3057/1 "2021-01-25T23:47:41Z")

</div>

[Most bolts can be purchased directly from Fastenal.](https://www.fastenal.com/)

**X Rail**  
8 Bolts holding down the X Rail to Y gantry blocks : m6 x 22mm long

**Y Rail to QCW**  
16 bolts holding the Y feet to the QCW blocks: m6 x 22mm long

**Stiffy**  
2 M5-0.8 x 16mm (ends)  
2 M6-1.0 x 14mm (gantry)  
2 M6x6 7380-10.9 (short)

**Z Slider Z-16 Gen 1**  
4 bolts holding the z slider to X gantry: m5 low head x 12mm long  
2 bolts squeezing the mount together : M5 x 30mm

**Z Slider Z-20 Gen 1**  
4 bolts holding the z slider to X gantry: M5 socket head x 20  
2 bolts at bottom of z slider holding in silver rods: M3x6 flanged button cap screws

**Z Slider Z-20 & Z-16 Gen 1**  
accessory mounting holes are M5 thread pattern

 ![IMG_0704](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/a/8/a89c7e64efa3158f2461592588d82b98fca85f79.jpeg)

**Z Slider Z-20 Gen 2**  
4 bolts holding the z slider to X gantry: M5 socket head x 20  
2 bolts squeezing the mount together : M5 x 30mm

**Apprentice**  
2 bolts holding squeezing the z slider to hold spindle: M5x36 socket head screws

**Laser attachment bolts for 4 holes on front of z slider:**  
M5x12mm Low head furniture bolt

* * *

**Motor Mounting Bolts**  
m5 low head x 12mm long

**Tramming Bolts**  
m5 low head x 12mm long (same bolts as Z-16 z slider mounting bolts)

**Set screws for holding silver bearings in place on X50 and X35 rail black gantry blocks:**  
m5 x .8mm. 4mm long. Flat tip set screw. [McMaster-Carr](https://www.mcmaster.com/flat-tip-set-screws/) 92605a227

**Touch Screen Mount**  
4 long bolts m5x70 and 4 m5 nylon locking nuts.

**Dust Boot:**  
Button Head screw that holds the router shield:#6-32 x 1/4" ([mcmaster-carr link](https://www.mcmaster.com/92949A144//))

**Bolts for Securing Drag Chain to Drag Chain Raceway**  
M4-0.7 x 8mm DIN 7991

**Ball Nut**  
X-35 Ball Nut bolt that holds it into the gantry block:

- 4mm hex head, m5 thread, 16mm long

X-50 Ball Nut bolt that holds it into the gantry block:

- 3mm hex head, m4 thread, 20mm long

**Oil Port**  
X-35 Rail/Ball Nut:

- M6 socket head by 6mm long. [McMaster-Carr](https://www.mcmaster.com/91290A310/)

X-50 Rail/Ball Nut

- M6 socket head by 6mm long.

**Wiper grub set screw on ends of feet**  
m4 x4mm long set screw.

**Wiper grub set screw on X35 ball screw**  
[M3 x 4mm cone tip](https://amzn.to/40oseHm?tag=benmyers-20)

**Plate on top of x gantry to hold the z motor and router cable**  
M6 x 1.0 × 14mm

**Suck It Dust Boot:**  
Dust boot shields (black): 6-32 x ¼  
Suck it Dust Boot Mounting Arms (thumb screws) 8-32 x 2"

**QCW:**  
Secure from above mdf slat securing bolts (discontinued in 2024): 10-32 x1" button head socket cap  
Secure from above Pem nuts (discontinued in 2024): [McMaster-Carr](https://www.mcmaster.com/95185A191/)  
Secure from below mdf slate securing screws: 10-12x5/8"  
Securing the Y rail to the qcw: M5 thread, 16 long, with a 5mm hex socket head.  
T Track Rail to tubes and Y horizontal side brace: Pan Head Tek Screw m6-1x65mm  
Thread for Mounting Feet: It is a 3/8-16 threaded insert.

**Spindle:**  
DRO Mounting: [M3x10 mmz SHCS 8.8 button head](https://www.fastenal.com/product/details/0141308)