These agricultural machinery blade screws are threaded fastening components for compatible cutting, mowing and implement assemblies. They are intended to secure a blade or related w...
Main Uses and Applications
Agricultural blade screws can be reviewed for compatible rotary mowers, flail mowers, mulchers, shredders, brush cutters, hay equipment and other implements with bolted blade connections. They may also suit compatible landscaping or vegetation-management equipment when the original fastener arrangement is verified.
Typical uses include replacing worn or missing fasteners, preparing maintenance stock, repairing implements and supplying replacement hardware. Blade thickness, holder design, clearance, rotation, clamping and mating-part condition affect suitability.
No specific brand, model or universal application is claimed. A similar-looking screw may still be unsuitable if its thread, length, head, bearing section or nut arrangement differs.
Visible Structure and Fastening Function
The photographed fasteners have a hexagonal head for wrench engagement, a threaded section for connection with a matching internal thread or nut, and a wider section beneath the head that can provide a defined bearing area. The exact function of the visible collar or washer-like form depends on the equipment design and should be confirmed from the original assembly.
In a blade mounting joint, the screw and matching nut or threaded holder work together to clamp the blade or related component. The correct thread engagement, seating surface and clearance are important for maintaining the intended connection. Do not assume that a standard hex bolt, a flanged bolt and a blade-specific fastener are interchangeable.
The images show more than one visual finish or appearance. They do not confirm a particular plating, black coating, corrosion rating or grade for every item. Surface appearance should therefore be treated as a product option to verify, not as proof of a defined treatment or performance level.
Available Stock Sizes
The following sizes are confirmed available stock specifications:
The length description should be matched with the supplier's agreed measuring method, such as under-head length or another drawing-defined dimension. Thread pitch, head dimensions, collar dimensions and nut details are not stated in this page and should be confirmed before ordering. The listed sizes are the confirmed stock range for this page, while other sizes may be discussed on request without implying additional stock. For repeat purchasing, confirm whether the required length is measured under the head, across the threaded portion or by an approved drawing reference. This avoids confusing nominal length with the usable installation length and helps the supplier prepare the correct fastener and matching components.
Selection Factors for Blade Fasteners
Before selecting an agricultural machinery blade screw, compare:
Thread diameter and thread pitch.
Required length and the agreed measurement reference.
Head shape, wrench size and under-head bearing form.
Collar or washer dimensions and blade-hole clearance.
Matching nut, threaded holder or opposite fastening component.
Blade thickness and the available thread engagement.
Rotation, vibration, impact and repeated loading at the joint.
Clearance from the blade path, housing and adjacent components.
Soil, moisture, plant residue and other operating contamination.
Condition of the blade holder, mounting hole and mating thread.
A larger diameter is not automatically the correct replacement, and a longer screw may interfere with the assembly or fail to seat correctly. The final selection should be based on the original part, equipment drawing, sample and joint requirements. Compare the complete fastener set rather than the screw alone, including the nut, collar or washer-like bearing section and the blade holder. Where load or safety is critical, use the equipment manufacturer's specified fastener requirements. If the original screw has a head marking, record it for the quotation, but do not assume the marking applies to every visual finish or stock size.
Installation and Maintenance Recommendations
Before service, park the machine safely, stop the engine, isolate the power source and prevent unexpected movement. Wear suitable protective equipment and follow the equipment manufacturer's blade-change procedure. Support the blade and related components before removing the existing fastener.
Clean the mating surfaces and inspect the blade hole, holder, thread, nut and bearing areas. Compare the replacement screw with the approved original part. Install the screw in the specified direction and use the correct matching nut or threaded component. Do not force mismatched threads, stack unconfirmed washers or alter the fastener to compensate for incorrect length.
Tighten according to the equipment manufacturer's specified procedure and torque requirement. No torque value is provided here, so none should be inferred from the photographs or stock size. After installation, confirm that the blade is seated, the fastener does not contact moving parts and the assembly has the required clearance.
During maintenance, inspect for looseness, thread damage, bending, corrosion, abnormal contact marks and wear around the blade hole. Recheck the complete blade mounting joint after service or at the interval required by the equipment manufacturer. Replace damaged nuts, holders or blades when they no longer provide a reliable fastening surface.
B2B Supply, Stock Availability and Fitment Support
These blade screws are intended for B2B purchasing by agricultural equipment manufacturers, parts distributors, repair workshops and engineering contractors. The confirmed M10-M16 range supports routine service, seasonal maintenance, implement repair and replacement-part distribution.
Reconfirm stock availability, quantity and delivery requirements for each order. For fitment support, provide the equipment brand and model, blade or holder location, original screw, thread information, length measurement, head and collar photos, matching nut details, drawing or sample, and required quantity.
The supplier can review the listed sizes and discuss other requested specifications when verified requirements are provided. Review may include dimensions, head form, collar arrangement, surface appearance or matching components, but does not add unconfirmed material grades, coatings, thread pitches, certifications or performance data.
For bulk purchasing, state the stock size, quantity, application and delivery requirements. Manufacturers can evaluate the screws for approved assemblies, distributors can build replacement inventory, repair teams can prepare service kits and contractors can source repeat parts. Any brand or part reference is for identification and fitment discussion only and does not imply original-brand status or certification.
FAQ
They are agricultural machinery blade screws: threaded hex-head fastening components for compatible blade, mower and implement assemblies.
Confirmed stock sizes are M10 x 25, M10 x 30, M12 x 30, M12 x 32, M12 x 35, M12 x 40, M14 x 35, M14 x 40, M14 x 45, M16 x 40, M16 x 50 and M16 x 60.
No. Confirm the blade hole, thread diameter and pitch, length, head and collar form, matching nut or holder, clearance and equipment model before ordering. Do not rely on appearance alone.
One black sample visibly shows “12.9”, but this page does not treat it as a confirmed specification for every item. Confirm the grade and marking for the requested batch.
The photographs show different appearances, but the exact treatment is not confirmed here. Verify the requested finish and specification before purchase.
Other specifications may be discussed on request. No additional size or stock quantity is confirmed unless separately quoted and approved.
Yes. Bulk supply can be reviewed based on the approved size, quantity and fitment requirements. Send the original screw, equipment information or a clear dimensional drawing to request stock availability, fitment support and a B2B quotation.
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