Original supplier-family assessment with primary standards context; no independent joint, load or field test.
Jetty plow-bolt family for cutting edges
Jetty lists flat and domed countersunk heads with square necks for blade and cutting-edge fastening. Select the joint geometry first; the stated production range is not a catalogue of approved, stocked configurations.
What Jetty actually publishes
A family description, not an approved machine-specific part.
The original page offers square-neck, countersunk plow bolts for blades and cutting edges, with flat and domed head designs. It states a diameter envelope of 3/8 to 1-3/8 inch and lengths up to 17 inch. [1] It does not give every diameter/length combination, pitch, tolerance, head dimension or live availability.
Useful for an initial enquiry
Connection type, candidate head form and the supplier’s stated production envelope. Send the required drawing or full reference rather than asking for a generic “12.9 plow bolt”.
Still needed for an order
Exact supplier code, size/thread designation, drawing revision, mating-hole geometry, material/property specification, matching hardware and dated availability.
The group photograph contains multiple head shapes and finishes without item labels. It cannot identify which bolt corresponds to your drawing. The supplier also claims cross-reference capability for several equipment brands; that is not OEM manufacture, brand authorisation or a verified serial-specific match.
ASME’s public B18.9 description covers dimensional/general data for inch-series plow bolts and distinguishes standardized dimensions from supplier stock availability. [3] Naming that standard in an enquiry is not proof that this family conforms to every requirement.
Check the head, square neck and blade together
The bolt alone does not define the connection.
Page 5 of Jetty’s brochure shows a plow-bolt schematic with head, square-neck, shank and thread dimensions. It is a generic view with symbols, not a dimension schedule for a particular SKU. [2] Use it to frame the drawing request; do not scale the picture or turn its generic angle marking into a universal blade-seat requirement.
| Check | Why it matters to selection |
|---|---|
| Head form and seat | Flat/domed designation, countersink geometry and head envelope must match the approved edge/end-bit drawing. |
| Square neck and hole | Confirm neck size/length, hole size and corner geometry. Worn or distorted holes require assessment rather than a guess at a larger bolt. |
| Plate stack and length | State the complete stack and drawing’s length reference. Include required thread engagement and clearance for the approved nut/washer arrangement. |
| Thread and finish | Agree diameter, pitch/TPI, tolerance and finish; nominate the matching nut so the interface is assessed together. |
For a replacement, submit the machine configuration and original reference with the blade/edge drawing. Photos help identify the connection but do not replace measurements. If the mating edge has been fabricated or changed, tell the supplier; an old machine cross-reference may no longer describe that joint.
Resolve the two property tables before using either
“12.9” and “SAE Grade 8” are not interchangeable order language.
The website lists 12.9 at 170,000 psi and HRC 38–42. The newer brochure’s 12.9 row instead lists at least 176,000 psi, at least 1220 MPa and HRC 39–44; a separate “170 Quality” row occupies the earlier strength/hardness range. These are supplier reference values, not reviewed lot-test results. [1][2]
Ask which dated specification governs the offered part and how it will be tested. Do not merge the tables, choose the higher figures as a product guarantee or assume all entries apply to the head geometry being ordered.
The brochure places GB and SAE grade labels beside one another. It supplies no item-linked conformity report establishing equivalence. The website combines inch size descriptions with 10.9/12.9 class language. Require an explicit applicable standard, thread system, material condition and acceptance method.
ISO’s public 898-1 abstract concerns metric-thread fasteners and notes that some countersunk/low heads have geometry-related strength limitations. Its scope does not supply torque/clamp-force or fatigue requirements. [4] A property-class label cannot establish assembled-joint performance, tightening torque or life. No load capacity is assigned here.
What should the supplier’s evidence identify?
The offered bolt and nut, drawing revision, applicable standard/edition, material and heat-treatment condition, batch identity and agreed mechanical inspections. Have the supplier explain the table conflict before release. For a critical joint, obtain engineering acceptance under applicable machine and design requirements.
Order the nut and installation basis with the bolt
Do not infer a tightening procedure from the grade.
Jetty’s website says it generally supplies class 10.9/12.9 plow bolts with class 10 nuts; the brochure shows more than one nut class. [1][2] This describes its range, not approval of a particular pairing. The quote should identify the actual nut type, thread and compatibility evidence.
Define whether nuts, washers or other pieces are included, and list each approved reference. Follow applicable equipment/service instructions for surface preparation, lubrication condition, tightening sequence, torque and any recheck. This listing supplies no universal torque and does not authorise reusing a damaged edge, hole or fastener.
If the old connection loosened or broke, preserve the part and record joint condition for qualified assessment. Ordering a higher-labelled grade alone does not establish the cause or make an unsuitable hole/seat acceptable. Keep the repair decision separate from a purchasing comparison.
Approve one configuration, then preserve its identity
Prevent the repeat shipment from becoming a different purchase.
- Drawing approval: confirm head/seat, neck, length convention, thread, nut and finish against the actual connection.
- Sample and documents: agree dimensional/mechanical checks with an identified lot. A photo is not a fit test or laboratory report.
- Shipment release: compare approved codes/revisions and required records; identify substitutions before dispatch.
- Receipt: retain labels, count each hardware type and record discrepancies before installation. Keep supplier and lot identity for a later claim.
The family page has no fixed MOQ, price, current stock quantity, delivery commitment or measured field life. Ask for commercial details against the approved configuration. Custom marking is conditional on the supplier accepting the quantity; it must not replace agreed traceability. CivilEquip has not physically fitted or load-tested this bolt family.
Ask for a drawing-controlled plow-bolt offer
Complete the joint evidence before requesting a price.
Sources & review
- Jetty original plow-bolt listing ↗
Head/neck forms, size envelope, reference grades and nut claim. No item-specific dimension table or test report.
2026-10-11 - Jetty six-page original bilingual brochure ↗
Page 5 schematic bolt/nut views and reference property table read visually. Page 3 families; no specific plow-bolt dimension schedule.
2026-10-11 - ASME B18.9 original publisher description ↗
Public description of inch-series dimensional standard and availability boundary; full paid tables not read.
2026-10-11 - ISO 898-1 original publisher abstract ↗
Public abstract: metric-thread scope, countersunk-head qualification and excluded torque/clamp/fatigue properties. Full paid standard not read.
2026-10-11
Specifications come from the manufacturer’s published information and the sources above; buying advice is written by CivilEquip with AI assistance. Ask the manufacturer to confirm the data for your configuration. Editorial policy · Report a correction.