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Pack of fifty zinc-plated M8 carriage bolts, 130 mm long, round heads with square necks

Zoro Select

Zoro Select M08250.080.0130 Carriage Bolt M8-1.25 130mm Class 4.6 Zinc PK50

SKU CH-JHDV-WTY7A

Square-neck carriage bolts, M8-1.25 × 130 mm, Class 4.6 steel with zinc plating, DIN 603, pack of 50

  • Product typeScrews & Bolts
  • Square neck prevents rotation during tightening
  • Class 4.6 steel rated to 58,000 psi tensile strength
  • Zinc plating resists corrosion in outdoor use
  • 130 mm length suits deep timber joints
  • Pack of 50 covers multiple fastening tasks

Zoro Select M8 Carriage Bolts

These Zoro Select M8-1.25 carriage bolts come in a 50-piece pack for fastening wood or metal where a smooth round head is required. The square neck locks into the workpiece to prevent rotation while tightening. Each bolt measures 130 mm in length and meets DIN 603 dimensions. They are made from Class 4.6 steel with a zinc-plated finish.

Zinc-plated steel thermals and strength

The zinc plating provides corrosion resistance for indoor or sheltered outdoor use. Class 4.6 steel delivers a tensile strength of 58,000 psi for reliable clamping force in structural joints. No moving parts means silent operation and zero power draw in any installation.

Upgrading from lower-grade or smaller fasteners

This pack replaces Grade 2 or ungraded bolts when higher tensile strength is specified for the joint. The jump is worth it when engineering drawings call for Class 4.6 or DIN 603 compliance. It does not suit applications needing high-strength Class 8.8 or stainless steel corrosion performance.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 61% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameZORO SELECT
Product typeScrews & Bolts

Questions about this item

How do I install the M8-1.25 carriage bolt so the 8.58 mm square neck locks correctly?

Drill an 8.58 mm square hole or a round hole that the 8.58 mm square neck can bite into, insert the bolt from the smooth side, add a washer and nut on the threaded end, and tighten while holding the bolt head to prevent the 130 mm shank from spinning.

Will the zinc-plated finish on these Class 4.6 bolts need replacement or re-coating over time?

The zinc plating protects the steel substrate; if the coating is scratched or worn through, corrosion can start, so inspect periodically and replace any bolt that shows red rust on the 19.35 to 20.65 mm head or along the 130 mm length.

What load limit appears first when these Class 4.6 bolts are under sustained tension?

The tensile strength is 58,000 psi, so sustained loads approaching that value will cause permanent stretch or fracture before the threads or the 5.60 mm square neck deform.

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