# Fasteners, bought hardware and assembly: references

80 records: 69 read sources that the rules and checks may cite, and 11 records catalogued from the Reference Map, not yet read. Screws, inserts and other bought parts, and getting them in and out.

Catalogued records are search snippets: their numbers are the authors' claims and their licences are as the map states them, unread. Cite one only after reading it.

The same records as JSON: https://cad-agent.valpatel.com/catalog/references/fasteners-and-hardware.json. All areas: [references](../references.md).

## Coverage

What cad-agent checked when the map was made; each drafted issue was never posted.

- **Heat-set insert hole, depth, pull-out, torque-out** (Implemented): Hole size not varied by material or nozzle; no M2.5/M6/M10 rows; no lying-axis capacity data; EPFL-style chamfer advice not modelled.
- **Screw boss wall/spacing; self-tapping holes in plastic** (Partly): Only DELTA PT sizes; no boss spacing or rib-gusset rule in code; no hole size by resin/filament; boss rules in profile are not run by dfm.check. Drafted issue, never posted: "Add boss-to-boss spacing and per-material self-tap pilot sizes".
- **PEM/self-clinching edge distance and hole size** (Implemented): Cited subset of parts; PEM blind types B/BS and standoff families not covered; SendCutSend 0.23-0.31 in catalog edge distance not mapped; rivets in mechanical/rivets.py.

## Records

| Record | Kind | Evidence | Confidence | Licence | Process | Role |
|---|---|---|---|---|---|---|
| [Adding Inserts to 3D Printed Parts: Hardware Tips (GrabCAD Print)](https://www.padtinc.com/2019/08/06/adding-inserts-to-3d-printed-parts-hardware-tips-plus-one-click-design-in-grabcad-print-advanced-fdm/) · PADT (Stratasys reseller) · `padt-adding-inserts-to-3d-printed-parts-hardware-tips` | Guide | encoded | high 0.9 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [Are Our Heat-Set Insert Datasheets Wrong?](https://cnckitchen.com/blog/are-our-heat-set-insert-datasheets-wrong) · CNC Kitchen · `cnckitchen-heat-set-hole-size` | Guide | encoded | high 0.9 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [How to Design the Proper Hole for Heat/Ultrasonic Inserts (SPIROL white paper)](https://www.spirol.com/resources/white-papers/how-to-design-the-proper-hole-for-heat-ultrasonic-inserts/) · SPIROL · `spirol-how-to-design-the-proper-hole-for-heat-ultrasonic` | Guide | encoded (authors' claim) | high 0.9 | proprietary, not read | Inserts and fasteners, Moulding and casting |  |
| [Polyholes](https://hydraraptor.blogspot.com/2011/02/polyholes.html) · HydraRaptor (blog) · `nophead-polyholes` | Article or blog post | encoded | high 0.9 | licence unclear, not read | 3D printing |  |
| [Arc Compensation](https://reprap.org/wiki/ArcCompensation) · RepRap project (RepRap wiki) · `reprap-arc-compensation` | Guide | encoded | medium 0.7 | share-alike, not read | 3D printing |  |
| [Threaded Inserts for 3D Prints - Cheap VS Expensive](https://www.cnckitchen.com/blog/threaded-inserts-for-3d-prints-cheap-vs-expensive) · CNC Kitchen · `cnck-2019` | Guide | encoded | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [Tips & Tricks for Heat-Set Inserts used in 3D printing](https://cnckitchen.com/blog/tips-and-tricks-for-heat-set-inserts) · CNC Kitchen · `cnckitchen-heat-set-tips` | Guide | encoded | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [Tips and Tricks: Heat-Set Inserts](https://lulzbot.com/learn/tips-and-tricks-heat-set-inserts) · LulzBot · `lulzbot-tips-and-tricks-heat-set-inserts` | Guide | encoded | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [3D Printing Threads and Adding Threaded Inserts to 3D Printed Parts](https://formlabs.com/blog/adding-screw-threads-3d-printed-parts/) · Formlabs · `formlabs-3d-printing-threads-and-adding-threaded-inserts-to` | Guide | verified at source | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [E-Z LOK Brochure 2026](https://www.ezlok.com/assets/documents/literature/EZ-LOK%20Brochure%202026.pdf) · E-Z LOK · `e-z-lok-brochure-2026` | Guide | verified at source (authors' claim) | medium 0.7 | proprietary, not read | Inserts and fasteners |  |
| [How to use threaded inserts (EPFL makerspace wiki)](https://make.epfl.ch/wiki/public/spot_-_3d_printing/how_to_use_threaded_inserts) · EPFL Make · `epfl-make-how-to-use-threaded-inserts-epfl-makerspace-wiki` | Guide | verified at source | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [Plastic Boss Design on Molded Parts](https://www.protolabs.com/resources/design-tips/plastic-boss-design-on-molded-parts/) · Protolabs · `protolabs-im-bosses` | Guide | verified at source | medium 0.7 | proprietary, not read | Moulding and casting, Inserts and fasteners |  |
| [Screw boss design injection molding](https://www.rapiddirect.com/blog/screw-boss-design-injection-molding/) · RapidDirect · `rapiddirect-screw-boss-design-injection-molding` | Guide | verified at source (authors' claim) | medium 0.7 | proprietary, not read | Moulding and casting, Inserts and fasteners |  |
| [3D Printed Fasteners: Part 1 - Inserts](https://www.embedded-computing.com/home-page/3d-printed-fasteners-part-1-inserts) · Embedded Computing · `embedded-computing-3d-printed-fasteners-part-1-inserts` | Guide | read (authors' claim) | medium 0.7 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [A Guide to PEM Hardware Inserts in Sheet Metal](https://sendcutsend.com/blog/pem-hardware-inserts-in-sheet-metal/) · SendCutSend · `sendcutsend-pem-guide` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Best Practices for Using Blind Rivets](https://www.machinedesign.com/fastening-joining/article/21831968/best-practices-for-using-blind-rivets) · Machine Design · `machine-design-best-practices-for-using-blind-rivets` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [Brass insert installation: comparing heat vs ultrasonic vs press fit (Plastics Technology)](https://www.ptonline.com/articles/brass-insert-installation-comparing-heat-vs-ultrasonic-vs-press-fit) · Plastics Technology · `plastics-technology-brass-insert-installation-comparing-heat` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners, Moulding and casting |  |
| [Compression Limiter Design Guide](https://uk.spirol.com/assets/files/cmpl-compression-limiter-design-guide-uk.pdf) · SPIROL · `spirol-compression-limiter-design-guide` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners, Moulding and casting |  |
| [Design Guide Bonding Plastics](https://dm.henkel-dam.com/is/content/henkel/Design-Guide-Bonding-Plastics) · Henkel Loctite · `henkel-loctite-design-guide-bonding-plastics` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [Designing Sheet Metal Parts With Tab and Slots](https://sendcutsend.com/blog/designing-sheet-metal-parts-with-tab-and-slots/) · SendCutSend · `sendcutsend-tab-slot` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Fastenating](https://github.com/slehmann1/Fastenating) · slehmann1 (GitHub) · `slehmann1-fastenating` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [FreeCAD Fasteners Workbench](https://github.com/shaise/FreeCAD_FastenersWB) · FreeCAD community (github.com/shaise) · `freecad-fasteners-wb` | Guide | read | low 0.4 | share-alike GPL-2.0-or-later, not read | Inserts and fasteners |  |
| [Guidelines for Threaded Holes in CNC Machining](https://protolabs.com/en-gb/services/cnc-machining/threaded-holes-guidelines) · Protolabs · `protolabs-guidelines-for-threaded-holes-in-cnc-machining` | Guide | read (authors' claim) | low 0.4 | proprietary, not read | CNC machining, Inserts and fasteners |  |
| [Hardware Installation Design Guidelines](https://www.pcbway.com/blog/CNC_Machining/Hardware_Installation_Design_Guidelines_15aa42f5.html) · PCBWay · `pcbway-hardware-installation-design-guidelines` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Helicoil install guide (Albany County Fasteners)](https://www.albanycountyfasteners.com/media/cf/c2/cc/1764619189/insert-installation-guide.pdf) · Albany County Fasteners · `albany-county-fasteners-helicoil-install-guide-albany-county` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners, CNC machining |  |
| [How to Save Time with Locating Features for Weldments](https://sendcutsend.com/blog/how-to-save-time-with-locating-features-for-weldments/) · SendCutSend · `sendcutsend-how-to-save-time-with-locating-features-for` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Jawstec: Why Heat-Set Insert Specifications Need Scrutiny](https://www.jawstec.com/?p=76921) · Jawstec · `jawstec-why-heat-set-insert-specifications-need-scrutiny` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners, General DFM |  |
| [K-Factor: Finding Torque Values for Bolted Joints](https://www.hextechnology.com/articles/bolt-k-factor/) · Hex Technology · `hex-technology-k-factor-finding-torque-values-for-bolted` | Guide | read | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [Self-clinching nuts bulletin CL (PEM, hosted copy)](https://static.chipdip.ru/lib/234/DOC027234353.pdf) · PennEngineering PEM (hosted copy) · `pennengineering-pem-self-clinching-nuts-bulletin-cl-pem` | Guide | read (authors' claim) | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Tabs and Slots for Sheet Metal Part Design](https://www.fictiv.com/articles/sheet-metal-tabs-and-slots-assembly) · Fictiv · `fictiv-tabs-slots` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Threaded Inserts with Heat Staking and Ultrasonic Welding](https://www.protolabs.com/en-gb/resources/blog/threaded-inserts-with-heat-staking-and-ultrasonic-welding/) · Protolabs · `protolabs-threaded-inserts-with-heat-staking-and-ultrasonic` | Guide | read | low 0.4 | proprietary, not read | Moulding and casting, Inserts and fasteners |  |
| [Welded Sheet Metal Parts Design Guidelines](https://www.pcbway.com/blog/Welding/Welded_Sheet_Metal_Parts_Design_Guidelines_a79851e3.html) · PCBWay · `pcbway-welded-sheet-metal-parts-design-guidelines` | Guide | read | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [AISIS100.jl, AISI S100 cold-formed steel design in Julia](https://github.com/runtosolve/AISIS100.jl) · runtosolve (github.com/runtosolve) · `aisis100-jl` | Read source | read | unknown | not recorded |  |  |
| [Aluminum Design Manual 2020](https://www.aluminum.org/aluminum-design-manual-2020) · Aluminum Association · `aa-adm-2020` | Read source | read | unknown | not recorded |  |  |
| [Axial Strength and Mating Screw Recommended Tightening Torque for PEM Brand Self-clinching Nuts (Unified)](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/Mating-Screw-tightening-torque-10_28_21-Unified.pdf) · PennEngineering (PEM) · `pem-mating-screw-torque` | Read source | read | unknown | not recorded |  |  |
| [bd\_warehouse](https://github.com/gumyr/bd_warehouse) · github.com/gumyr · `bd-warehouse` | Read source | read | unknown | not recorded |  |  |
| [Blueprints (blue-prints), structural engineering calculations in Python](https://github.com/Blueprints-org/blueprints) · Blueprints-org (github.com/Blueprints-org) · `blueprints-structural` | Read source | read | unknown | not recorded |  |  |
| [CL Self-Clinching Nuts (Bulletin CL)](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/cldata.pdf) · PennEngineering (PEM) · `pem-bulletin-cl` | Read source | read | unknown | not recorded |  |  |
| [Countersink Design Best Practices](https://sendcutsend.com/blog/countersink-design-best-practices) · SendCutSend · `sendcutsend-countersink` | Read source | read | unknown | not recorded |  |  |
| [DELTA PT: a superior thread-former for plastics (brochure version 250422)](https://www.bulten.com/media/b5eby1nc/deltapt-version-250422.pdf) · Bulten AB (made under licence from EJOT) · `bulten` | Read source | read | unknown | not recorded |  |  |
| [Engineering Polymers: Joining Techniques - A Design Guide](https://solutions.covestro.com/-/media/covestro/solution-center/brands/downloads/imported/1557214197.pdf) · Covestro LLC · `covestro-joining` | Read source | read | unknown | not recorded |  |  |
| [European Technical Assessment ETA-13/0255 (GESIPA blind rivets)](https://www.dibt.de/pdf_storage/2022/ETA-13!0255(8.06.02-495!16)e.pdf) · Deutsches Institut für Bautechnik (DIBt), for GESIPA Blindniettechnik GmbH · `gesipa-eta-13-0255` | Read source | read | unknown | not recorded |  |  |
| [F PEMSERT Self-Clinching Flush Nuts (Bulletin F)](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/fdata.pdf) · PennEngineering (PEM) · `pem-bulletin-f` | Read source | read | unknown | not recorded |  |  |
| [Fastener Design Manual (NASA Reference Publication 1228)](https://ntrs.nasa.gov/citations/19900009424) · NASA Lewis Research Center · `nasa-1228` | Read source | read | unknown | not recorded |  |  |
| [FH Self-Clinching Studs and Pins (Bulletin FH)](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/fhdata.pdf) · PennEngineering (PEM) · `pem-bulletin-fh` | Read source | read | unknown | not recorded |  |  |
| [How do you assemble 3D-printed parts? Practical tips on threads & screws for 3D printing](https://www.hubs.com/knowledge-base/how-assemble-3d-printed-parts-threaded-fasteners/) · Protolabs Network (formerly Hubs) · `hubs-3dp-threaded-fasteners` | Read source | read | unknown | not recorded |  |  |
| [ISO 10642 Fasteners - Hexagon socket countersunk head screws with reduced loadability](https://evs.ee/en/iso-10642-2026) · ISO · `iso-10642` | Read source | read | unknown | not recorded |  |  |
| [ISO 15977 to ISO 15984: Open end blind rivets with break pull mandrel and protruding or countersunk head](https://committee.iso.org/home/tc2) · ISO (ISO/TC 2) · `iso-15977-15984` | Read source | read | unknown | not recorded |  |  |
| [ISO 273:1979 Fasteners - Clearance holes for bolts and screws](https://evs.ee/en/iso-273-1979) · ISO · `iso-273` | Read source | read | unknown | not recorded |  |  |
| [ISO 68-1:1998 ISO general purpose screw threads - Basic profile - Part 1: Metric screw threads](https://evs.ee/en/iso-68-1-1998) · ISO · `iso-68-1` | Read source | read | unknown | not recorded |  |  |
| [ISO 898-1:2013 Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes](https://evs.ee/en/iso-898-1-2013) · ISO · `iso-898-1` | Read source | read | unknown | not recorded |  |  |
| [LOCTITE 243 Technical Data Sheet](https://datasheets.tdx.henkel.com/LOCTITE-243-en_GL.pdf) · Henkel · `henkel-243` | Read source | read | unknown | not recorded |  |  |
| [Marson Rivets, Rivet Nuts and Installation Tools (AFS6010 0518)](https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5880/a3862.pdf) · Arconic Fastening Systems (Marson; now Howmet) · `marson-rivet-catalog` | Read source | read | unknown | not recorded |  |  |
| [Metallic Materials Properties Development and Standardization (MMPDS)](https://www.mmpds.org/) · Battelle · `mmpds` | Read source | read | unknown | not recorded |  |  |
| [MIL-STD-889C: Dissimilar Metals](https://everyspec.com/MIL-STD/MIL-STD-0800-0899/MIL-STD-889C_55418/) · US Department of Defense (NAVAIR) · `mil-std-889c` | Read source | read | unknown | not recorded |  |  |
| [NASA-STD-5020B: Requirements for Threaded Fastening Systems in Spaceflight Hardware](https://standards.nasa.gov/standard/NASA/NASA-STD-5020) · NASA · `nasa-std-5020b` | Read source | read | unknown | not recorded |  |  |
| [New Criteria for Self-Loosening of Fasteners Under Vibration](https://doi.org/10.4271/690055) · SAE Transactions 78, SAE technical paper 690055 · `junker-1969` | Read source | read | unknown | not recorded |  |  |
| [PEM self-clinching nuts types S, SS, CLS, CLSS, SP: catalogue pages CLS-M3-1 and SP-M3-1](https://catalog.pemnet.com/item/nuts-types-s-ss-cls-clss-cla-sp/self-clinching-nuts-types-s-ss-cls-clss-sp-metric/cls-m3-1) · PennEngineering (PEM) · `pem-catalog-self-clinching-nuts` | Read source | read | unknown | not recorded |  |  |
| [POP Avdel Breakstem Riveting Systems (NA P3200 02 2015)](https://www.stanleyengineeredfastening.com/) · Stanley Engineered Fastening (POP, Avdel) · `avdel-breakstem-catalog` | Read source | read | unknown | not recorded |  |  |
| [POP Blind Riveting Systems (catalogue P3100 Rev. D)](https://www.stanleyengineeredfastening.com/-/media/Web/SEF/Resources/Docs/POP/POP-Rivet-Catalog.pdf) · Emhart Teknologies (Stanley Engineered Fastening) · `pop-rivet-catalog` | Read source | read | unknown | not recorded |  |  |
| [ranf\_thread\_fast, threaded fastener and bolted joint analysis](https://github.com/tpw809/ranf_thread_fast) · github.com/tpw809 · `ranf-thread-fast` | Read source | read | unknown | not recorded |  |  |
| [Self-tapping screws for thermoplastics (COV00073610)](https://solutions.covestro.com/-/media/covestro/solution-center/whitepapers/self-tapping-screws-for-thermoplastics.pdf) · Covestro Deutschland AG · `covestro-screws` | Read source | read | unknown | not recorded |  |  |
| [SFF-8201 2.5" Form Factor Drive Dimensions, Rev 3.4](https://members.snia.org/document/dl/25851) · SNIA SFF Technology Affiliate · `sff-8201` | Read source | read | unknown | not recorded |  |  |
| [SFF-8301 3.5" Form Factor Drive Dimensions, Rev 1.9](https://members.snia.org/document/dl/25862) · SNIA SFF Technology Affiliate · `sff-8301` | Read source | read | unknown | not recorded |  |  |
| Shigley's Mechanical Engineering Design, 10th edition · McGraw-Hill Education · `shigley` | Read source | read | unknown | not recorded |  |  |
| Shigley's Mechanical Engineering Design, 8th edition · McGraw-Hill · `shigley-8e` | Read source | read | unknown | not recorded |  |  |
| [SO Self-Clinching Standoffs (Bulletin SO)](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/sodata.pdf) · PennEngineering (PEM) · `pem-bulletin-so` | Read source | read | unknown | not recorded |  |  |
| [The Design Engineer's Fastener Guide](https://www.pemnet.com/wp-content/uploads/sites/2/2022/09/Fastener-Guide_9-02-22.pdf) · PennEngineering (PEM) · `pem-fastener-guide` | Read source | read | unknown | not recorded |  |  |
| [The Self Clinching Fastener Handbook](https://www.pemnet.com/wp-content/uploads/sites/2/2022/06/self-clinching-fastener-handbook.pdf) · PennEngineering (PEM) · `pem-handbook` | Read source | read | unknown | not recorded |  |  |
| [3M Scotch-Weld Structural Adhesive Selection Guide](https://multimedia.3m.com/mws/media/2493104O/3M%20Scotch-Weld%20SA%20Selection%20Guide%20Brochure.pdf) · 3M · `3m-scotch-weld-structural-adhesive-selection-guide` | Guide | snippet only | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [EJOT DELTA PT flyer](https://www.ejot.de/medias/sys_master/Industry_Flyer/Industry_Flyer/h11/hc7/9331662782494/EJOT-DELTA-PT-Flyer-08.23-en.pdf) · EJOT · `ejot-delta-pt-flyer` | Guide | snippet only (authors' claim) | low 0.4 | proprietary, not read | Inserts and fasteners, Moulding and casting |  |
| [Fastening Technology: self-tapping screws for plastic](https://www.bossard.com.cn/cn-en/knowledge-hub/inspiration/blog/self-tapping-screws-plastic/) · Bossard · `bossard-fastening-technology-self-tapping-screws-for-plastic` | Guide | snippet only | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [Guidelines for Hardware Insertion](https://sendcutsend.com/guidelines/hardware/) · SendCutSend · `sendcutsend-guidelines-for-hardware-insertion` | Guide | snippet only | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [Heat Inserts and 3D-printing - a guide](https://www.printables.com/article/heat-inserts-and-3d-printing-a-guide-W5ob2VN) · Printables (community author) · `printables-heat-inserts-and-3d-printing-a-guide` | Guide | snippet only | low 0.4 | proprietary, not read | 3D printing, Inserts and fasteners |  |
| [How to Install Key-Locking Inserts](https://www.mcmaster.com/thread-adapting-inserts) · McMaster-Carr · `mcmaster-carr-how-to-install-key-locking-inserts` | Guide | snippet only | low 0.4 | proprietary, not read | Inserts and fasteners, CNC machining |  |
| [PEM blind fastener bulletin B (Mouser copy)](https://mouser.com/datasheet/2/974/bdata-3555378.pdf) · PennEngineering PEM (hosted copy) · `pennengineering-pem-pem-blind-fastener-bulletin-b-mouser` | Guide | snippet only (authors' claim) | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [PEM self-clinching blind fasteners B/BS datasheet](https://catalog.pemnet.com/item/blind-nuts-types-b-bs/self-clinching-blind-fasteners-types-b-bs-unified/bs-440-2?dlpdf=t) · PennEngineering (PEM) · `pennengineering-pem-self-clinching-blind-fasteners-b-bs` | Guide | snippet only (authors' claim) | low 0.4 | proprietary, not read | Sheet metal and laser, Inserts and fasteners |  |
| [POP Rivet Design Guidelines](https://stanleyengineeredfastening.com:443/en/brands/POP/POP%20Rivet%20Design%20Guidelines) · Stanley Engineered Fastening · `stanley-engineered-fastening-pop-rivet-design-guidelines` | Guide | snippet only | low 0.4 | proprietary, not read | Inserts and fasteners |  |
| [POP Rivet Selection Factors](https://www.stanleyengineeredfastening.com:443/en/brands/POP/POP%20Rivet%20Selection%20Factors) · Stanley Engineered Fastening · `stanley-engineered-fastening-pop-rivet-selection-factors` | Guide | snippet only | low 0.4 | proprietary, not read | Inserts and fasteners, Sheet metal and laser |  |
| [Threaded Holes (Xometry)](https://www.xometry.com/resources/machining/threaded-holes/) · Xometry · `xometry-threaded-holes-xometry` | Guide | snippet only | low 0.4 | proprietary, not read | CNC machining, Inserts and fasteners |  |