S-90911A818 7/16"-14 x 3" ASME B18.9, SAE J429 Plow Bolts

Plow Bolts

0858FA00020 Plow Bolts
0858FA00020 Plow Bolts

Image may differ from product. See technical specification for details.

Part No.
Part No. 0858FA00020
Equivalent to mcmaster :
90911A818

Basic Information

System of Measurement Inch
Plow Bolt Trade Number No. 3
Specifications Met ASME B18.9, SAE J429

Head Parameters

Head Type Flat
Head Diameter 0.826"
Head Height 0.364"
Flat Head Profile Standard

Neck & Shank Parameters

Neck Type Square
Neck Width 0.45"

Dimension Parameters

Length 3"
Screw Diameter 0.4375"
Countersink Angle 82°

Thread Parameters

Thread Type UNC
Thread Size 7/16"-14
Threading Fully Threaded
Thread Direction Right Hand
Thread Spacing Coarse
Thread Fit Class 2A

Material & Strength Parameters

Material Zinc-Plated Steel
Fastener Strength Grade/Class Grade 5
Hardness Rockwell C25
Tensile Strength 120000 psi

Finish & Compliance Parameters

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Exceptional Tensile Strength – Grade 5 rating with 120,000 psi tensile strength ensures reliable performance under heavy loads and vibration.
  • Superior Corrosion Resistance – Zinc-plated steel construction provides durable protection against rust in harsh outdoor and industrial environments.
  • Secure Anti-Rotation Locking – Square neck design prevents bolt spinning during installation, speeding up assembly and reducing labor time.
  • Full Thread Engagement – Fully threaded UNC coarse threads offer maximum grip and uniform stress distribution along the entire length.
  • Precision Thread Fit – Class 2A thread fit ensures smooth, consistent assembly with standard nuts and tapped holes.
  • Optimized Head Design – Standard 82° flat head allows for flush mounting in countersunk applications, improving safety and aesthetics.
  • High Hardness Durability – Rockwell C25 hardness maintains structural integrity and resists wear in demanding agricultural and industrial uses.

Professional Applications & Engineering Value

These Grade 5 plow bolts are engineered for heavy-duty applications where vibration resistance and high clamping force are critical. The zinc-plated steel material offers excellent corrosion protection, making them ideal for agricultural equipment, snowplow blades, and construction machinery exposed to moisture and abrasive conditions. The square neck securely locks into mating parts, eliminating rotation during torque application and preventing loosening under dynamic loads. With fully threaded UNC coarse threads, these bolts provide superior holding power across the entire 3" length, ensuring even load distribution and reducing the risk of shear failure. This design is particularly valuable in assembly lines where speed, reliability, and compliance with ASME B18.9 and SAE J429 standards are required for operational safety and longevity.

Specification Summary & Compliance

This plow bolt features a 7/16"-14 UNC thread with Class 2A fit for consistent, precise assembly. It meets ASME B18.9 and SAE J429 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing it is free of hazardous substances and safe for use in various industrial and international markets.

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