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Round-head carriage bolt with square neck, plain stainless steel, pack of 50

Zoro Select

Zoro Select Carriage Bolt M8-1.25 x 35 mm A2 SS PK50

SKU CH-7Q6X-5DTDK

M8-1.25 carriage bolt with 35 mm length and square neck in A2 stainless steel, DIN 603, pack of 50

  • Product typeScrews & Bolts
  • Corrosion-resistant A2 stainless steel withstands moisture and chemicals
  • Square neck locks into wood or metal preventing rotation during tightening
  • Metric coarse M8-1.25 thread fits standard tapped holes and nuts
  • DIN 603 dimensions ensure interchangeable fit with existing hardware
  • Pack of 50 pieces covers multiple fastening jobs in one box

Zoro Select M8 Carriage Bolt Pack

This pack contains 50 stainless steel carriage bolts with M8-1.25 metric coarse threads and a 35 mm shank length. They meet DIN 603 dimensions and are made from A2 grade material with a plain finish. The square neck prevents rotation during tightening in wood or metal. Right-hand threads suit standard tools.

DIN 603 Standard And Metric Coarse Thread

The bolts follow DIN 603 for head and square-neck dimensions with a thread pitch of 1.25 mm. Tensile strength is rated at 101,500 psi for structural calculations. Metric coarse threads require matching M8 nuts and tapped holes. A2 stainless steel resists corrosion but is not rated for marine or high-chloride environments.

Square Neck And Round Head For Everyday Use

The 19.35 to 20.65 mm round head distributes load without a washer in many applications. Square neck height of 5.60 mm and width of 8.58 mm lock into pre-drilled square holes or soft material. Head height of 4.88 mm keeps the profile low. Pack of 50 suits repeat jobs or small production runs.

How it compares

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

Price $26.99
Pricier than about 59% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameZORO SELECT
Product typeScrews & Bolts

Questions about this item

Should I choose the M8-1.25 x 35 mm pack of 50 or a different length?

The M8-1.25 x 35 mm pack of 50 suits joints needing a 35 mm shank; select a longer bolt only if the clamped material exceeds that grip length.

What does the 101,500 psi tensile strength mean when the bolt is installed?

It means the A2 stainless shank can withstand roughly 101,500 psi before permanent stretch, so the joint stays secure under high clamping loads.

Does the DIN 603 square neck limit the hole size I can use?

Yes, the 8.58 mm square width requires a hole no larger than that, otherwise the neck will spin instead of locking the bolt during tightening.

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