The M12-1.25 x 35mm bolt size is a common choice for automotive, machinery, and general hardware assemblies. This guide highlights five reliable options that meet metric and JIS standards, focusing on durability, thread quality, and appropriate head types. Use this overview to compare specs and select fasteners that fit your mechanical needs and environments.
| Product | Brand | Standard/Grade | Head Type | Notes |
|---|---|---|---|---|
| REMTUNE M12-1.25 x 35mm Hex Flange Bolt | RemTune | JIS B1189, Grade 10.9 | Hex Flange | Fully threaded; 17mm hex head |
| (4 Pieces) M12-1.25×35 Class 10.9 JIS Hex Flange Bolts | BoltsandNuts.com | Class 10.9 | Hex Flange | 4 pieces; 17mm wrench size; zinc clear finish |
| (1) M12-1.25 x 35mm JIS Hex Head Flange Bolt | Clipsandfasteners | Class 10.9 | Hex Flange | Small head; 17mm wrench; zinc |
| DIN 961 M12-1.25 x 35mm Hex Cap Screws Zinc Plated | Newport Fasteners | DIN 961, Grade 8.8 | Hex Cap (fully threaded) | 50 pieces; zinc plated |
| Dorman 876-635 Cap Screw – Hex Head – M12-1.25 x 35mm | Dorman | Class 8.8 | Hex Head | Includes hex head; CHINA origin |
Below are five product sections tailored to the keyword, each with a direct link to the Amazon listing, an image, and key features distilled for quick comparison. All sections stay objective and focus on specifications and use cases.
RemTune M12-1.25 x 35mm Hex Flange Bolt
The REMTUNE bolt adheres to JIS B1189 with a metric grade of 10.9. It features a 17mm hex head and a fully threaded body, suitable for precise clamps and assemblies requiring strong clamping force. The flange design helps distribute load and reduces the risk of pull-through in softer materials. This option suits projects where standardized Japanese hardware is preferred for compatibility with other JIS components.
(4 Pieces) M12-1.25×35 Class 10.9 JIS Hex Flange Bolts
This set includes four M12-1.25 x 35mm bolts with Class 10.9 strength under the JIS standard. The 17mm wrench size is compatible with common tools, and the full-threaded design provides robust fastening in automotive and industrial applications. Zinc clear finish offers basic corrosion resistance for indoor or sheltered environments.
(1) M12-1.25 x 35mm JIS Hex Head Flange Bolt
This single bolt uses a JIS hex head with a flange to provide a larger bearing surface. It measures 12mm across the thread with a 1.25 pitch and 35mm length, and the head height is 11.5mm. The 17mm wrench size is standard for many industrial fasteners, and the zinc finish adds basic corrosion resistance suitable for indoor assembly work.
Newport Fasteners DIN 961 M12-1.25 x 35mm Zinc Bolts
These metric class 8.8 zinc-plated cap screws adhere to DIN 961 and are fully threaded. The M12 diameter with 1.25 mm pitch and 35 mm length makes them versatile for machine frames and mounting hardware where DIN-standardized fasteners are required. The zinc coating provides rust resistance for use in moderate humidity environments.
Dorman 876-635 M12-1.25 x 35mm Cap Screw
The Dorman cap screw is a Class 8.8 threaded fastener with a hex head, designed for general-purpose fastening. The product listing suggests a compact package size and Chinese origin. This option is suitable for assemblies where standard M12-1.25 x 35mm fasteners are needed and a simple hex-head design is preferred for quick installation.
U-Turn Fasteners Flange Bolt M12-1.75 x 35mm
Note: This listing covers M12-1.75 x 35mm flange bolts, which differs from the target 1.25 pitch. It is included for context on similar flange bolt options, including the larger pitch. The header highlights how flange bolts aid load distribution and simplify installation by eliminating the need for a separate flat washer in some setups.
Buying Guide: Key Purchase Considerations and Comparisons
- Thread pitch and diameter: For M12-1.25 x 35mm, ensure the 1.25 mm thread pitch matches compatible nuts, taps, and mating components. Mixing with 1.75 or other pitches can cause cross-threading or reduced holding power.
- Head type and drive: Hex flange heads are common for distributed load and easier tool access. Hex cap screws offer straightforward torque application. Consider flange height and bearing surface based on material thickness and load.
- Strength grade and standards: JIS B1189, DIN 961, and AES classifications (8.8, 10.9) indicate tensile strength. Higher grades provide greater clamping force but may require more precise torque control.
- Coating and corrosion resistance: Zinc plating provides basic corrosion resistance suitable for indoor or sheltered environments. For outdoor or highly corrosive settings, consider stainless steel or specialized coatings.
- Full thread vs partial thread: Fully threaded options improve clamping range and grip in variable-length assemblies, whereas partially threaded bolts may offer cleaner performance where a shoulder is needed.
- Material compatibility: Ensure the bolt material is compatible with the mating components (steel, aluminum, or other alloys) to avoid galvanic corrosion or galling.
- Packaging and quantity: For bulk projects, consider multi-pack options (e.g., 4-piece or 50-piece boxes) to minimize reordering frequency and ensure consistent torque characteristics across all fasteners.
- Source and standards alignment: When assembling equipment that must meet specific standards (JIS, DIN), verify the supplier’s documentation and the product’s official spec sheet to confirm compliance.
- Tool requirements: Confirm the appropriate wrench size (commonly 17mm for M12 bolts) and whether an Allen key or Torx driver is needed for the head type if present.
- Application context: Indoor machinery, automotive chassis, and equipment housings each have different load conditions. Match the grade and finish to the environment and safety requirements of the project.