Manloney M9 bolt, 45mm

If you’re choosing between a general-purpose fastener and one that needs to match a specific metric thread, this Manloney M9 bolt is aimed at the second job. It’s listed as M9 x 45mm, with a 1.0mm pitch and 304 stainless steel construction, so those dimensions—not the broad list of suggested industries—are the useful starting point. The listing also describes a left-hand reverse thread, which makes thread direction a key detail to confirm for your repair or assembly. One wrinkle: its head descriptions don’t agree, so don’t order on the assumption that it takes a particular wrench.

How it fits

The stated thread diameter is 9mm, the thread length is 45mm, and the pitch is 1.0mm. Match those details to the part or threaded hole you’re replacing, a bolt can look close and still be the wrong fit if its pitch or direction differs. The listing calls the thread coarse and gives thread class 6H, while also identifying it as a left-hand reverse thread. If you’re working from an existing fastener, comparing its length and thread direction before installation is more useful than relying on the general “universal” label.

Picture a repair where the old bolt has been removed and you’re checking the replacement against it before putting a bracket back in place: this is the kind of specific size information that helps narrow the choice. But which head tool will you need? That isn’t clear from the listing. It calls the part a hex socket cap screw, then gives the head style as outer hexagon and describes an Allen screw. Those are conflicting descriptions of the wrench interface, so verify the actual head style with the seller or a reliable product image before buying.

Pros

The stated 304 stainless steel construction is relevant for buyers looking for a corrosion-resistant material, although the listing’s “no rust” wording shouldn’t be read as a guarantee for every environment. The specified M9 x 45mm size and 1.0mm pitch also give you concrete measurements to compare with a replacement part. A washer face under the head is described, which may suit an assembly where that built-in bearing surface is wanted rather than a separate washer.

Worth considering if you already know you need an M9 bolt with this length, pitch, and left-hand thread. Better avoided if the thread direction or head style is uncertain, or if you need a nut included: the listing explicitly says nuts are not included. It also provides no load rating or other basis for judging suitability for a particular structural or safety-critical job.

Spec sheet

• Type: Hex socket cap screw / bolt, head descriptions conflict in the listing
• Size: M9 x 45mm
• Material: 304 stainless steel
• Thread pitch: 1.0mm
• Thread: Metric, coarse, left-hand reverse thread is stated
• Thread class: 6H
• Head dimensions: 10mm high and 15.7mm in diameter
• Standard: DIN 912
• Included: Bolt only, nuts are not included

Is it worth it?

This is a specific-size replacement bolt, not a flexible hardware assortment. Its stated measurements and stainless steel material make it easier to assess for a matching metric repair, and the described washer face may be useful when that feature is part of the assembly. The main drawback is practical, not cosmetic: the head is described in incompatible ways, and no nut comes with it. Buy it when you’ve confirmed the M9 x 45mm dimensions, 1.0mm pitch, reverse-thread direction, and required head interface, skip it when any of those details are still a guess.