SKU: 2507250005

Carriage Bolt & Hex Nut - HDG - M8 x 40 | Box of 100

Sale price$15.80 Regular price$17.56
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Carriage Bolt & Hex Nut - HDG - M8 x 40 | Box of 100A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. NOTE: Nuts included. Fully threaded up to and including 150mm, partially threaded thereafter. Key Features Manufactured from grade 4. 8 carbon steel Hot dipped galvanised finish to withstand up to 500 hours salt spray Specifications Size M8 x 40 Thread Dia. mm M8 Length mm 40 Thread Type Metric Head Type Dome Head Dia. mm 20 Finish

A domed head bolt with a square anti spin shoulder mainly used for clamping timber or attaching ironmongery to timber. NOTE: Nuts included. Fully threaded up to and including 150mm, partially threaded thereafter.

Key Features

  • Manufactured from grade 4.8 carbon steel
  • Hot dipped galvanised finish to withstand up to 500 hours salt spray

Specifications

Size M8 x 40
Thread Dia. mm M8
Length mm 40
Thread Type Metric
Head Type Dome
Head Dia. mm 20
Finish Hot Dipped Galvanised
Material Carbon Steel
Pack Quantity 100 Pieces
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 2507250005

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4.7 ★★★★★
Based on 25 reviews
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Product Reviews
J
Verified Purchase
JNL
Whiting, US
★★★★★ 5
The best lower unit gear oil I have used
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
I have been boating my whole life, this is by far the best gear oil. I use this in my Johnson 115 even though this is technically made by Mercury. I seem to get less if any water intrusion into my gearcase with this oil. If there is any, the oil emulsifies the water and continues to protect the gears. I have had better luck with this than Pennzoil marine or others. Highly recommend. It is a blue color and easy to drain and fill.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
D
Verified Purchase
Debra
Grantham, US
★★★★★ 5
Great
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great lube for the boat
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
J
Verified Purchase
Joshua Murray
Houston, US
★★★★★ 5
recommend
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
C
Verified Purchase
Christopher C.
Louisville, US
★★★★★ 4
Does not come with a pump.
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself. The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that. The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)
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Reviewed in the United States on October 28, 2025
J
Verified Purchase
Joe H.
Dallas, US
★★★★★ 5
Works fine in outdrive
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Good gear oil. Purple dye for leak detection
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026

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