Renusol Hammerhead Bolt M8x25 - REN-900007 | T-Bolt for Renusol Solar Mounting Rail

Description

The Renusol Hammerhead Bolt M8x25 (Part No: REN-900007) is a T-head bolt engineered to slide into the channel of Renusol mounting rails, providing a secure, adjustable fixing point for roof hooks, brackets, clamps, and rail connectors. With an M8 thread and 25mm shank length, the hammerhead profile locks into the rail's slot and resists rotation once seated, allowing the mating nut to be tightened without the bolt spinning.

This bolt is a core fixing component used repeatedly across the Renusol VS+ mounting system, appearing in roof hook kits, hanger bolt sets, and bracket assemblies, and is typically paired with the matching M8 serrated flange nut (REN-900001).

M8

Thread Size

25mm

Bolt Length

Hammerhead

Head Type

Renusol VS+

System Compatibility

REN-900001

Matching Nut

T-Slot Fit

Rail Fixing

Compatibility Warning

Renusol mounting equipment must not be used with mounting equipment from other suppliers. Doing so would inevitably void the warranty of the mounting system.

Spare Part & Component Use

This bolt is a fixing component designed for use within Renusol rail and bracket assemblies — it is typically supplied as part of a larger kit but is also available as a standalone spare or replacement part.

Key Features

Hammerhead T-Slot Design

The T-shaped head slides into the channel of Renusol mounting rails and locks against rotation once seated, allowing single-handed tightening.

M8 Thread — System Standard

The M8 thread matches the serrated flange nuts and fixing hardware used throughout the Renusol VS+ mounting range.

25mm Bolt Length

A 25mm shank length suited to standard rail-mounted clamp, hook, and bracket fixings.

Adjustable Sliding Fit

Once inserted, the bolt can slide along the rail channel before final positioning and tightening, giving installers flexibility during layout.

Core Renusol Fixing Component

Used repeatedly across roof hooks, hanger bolt sets, and bracket kits throughout the Renusol product range.

Pairs With Serrated Flange Nut

Designed to be tightened against the Renusol M8 serrated flange nut (REN-900001) for a secure, vibration-resistant fixing.

Technical Specifications

General

Part Number

REN-900007

Product Name

Hammerhead Bolt M8x25

Manufacturer

Renusol

System Compatibility

Renusol VS+ / VarioSole+ mounting range

Fastener Specification

Thread Size

M8

Bolt Length

25mm

Head Type

Hammerhead (T-slot)

Typical Pairing

Nut

Renusol Serrated Flange Nut M8 (REN-900001)

Frequently Asked Questions

What rail does this bolt fit?

The hammerhead head is designed to slide into the channel of Renusol mounting rails used across the VS+ system, including roof hook and bracket fixing points.

What nut is this bolt used with?

It is typically paired with the Renusol Serrated Flange Nut M8 (REN-900001) to complete a secure, self-locking fixing.

Why is it called a 'hammerhead' bolt?

The bolt has a T-shaped head that locks into the rail slot once turned 90 degrees, resisting rotation so the nut can be tightened one-handed.

Can this bolt be repositioned after inserting it into the rail?

Yes. Before final tightening, the bolt can slide along the rail channel, giving installers flexibility to position hooks, clamps, or brackets accurately.

Is this bolt sold as a spare part or only as part of a kit?

It is available as a standalone spare or replacement part, in addition to being included within many Renusol roof hook and bracket kits.

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