EJOT JT3-SB-3x155 – stainless steel double-thread bolt M10x50 for PV mounting structures
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EJOT JT3-SB-3x155 double-thread bolt made of stainless steel 1.4301 (A2), M10x50 thread, total length 185 mm, weight 0.086 kg. Standard DIN 934. For fastening photovoltaic mounting structures to metal, sheet metal, shingle and felt roofs.
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Product features
[PIM] Śruby dwugwintowe, dwugwinty #39
- Product Type Double-Ended Stud
- Thread type M10
- Length [mm] 50
Description
EJOT JT3-SB-3x155 – stainless steel double-thread bolt M10x50 for PV mounting structures

EJOT JT3-SB-3x155 double-thread bolt is a professional fastening element designed for installing photovoltaic mounting structures on roofs covered with metal panels, sheet metal, shingles or roofing felt. Made of stainless steel 1.4301 (A2), it ensures a durable and corrosion-resistant connection in all weather conditions. The double-thread design combines two functions in one element — the end with a self-tapping thread screws directly into the steel roof structure, while the opposite end with a metric M10 thread serves as a mounting point for adapters using flange nuts. The total working length is 185 mm, allowing for secure anchoring even in thicker layers of roof covering. The double-thread bolt is supplied complete with flange nuts and an EPDM washer, which effectively seals the roof penetration point, protecting against leaks.
Key benefits for the installer
- Complete mounting set — DIN 934 flange nuts and EPDM washer included, no need to order additional components
- Austenitic A2 (grade 304) stainless steel with added nickel provides exceptional resistance to corrosion and mechanical stress, with no risk of rust even after years of use
- Universal application — roofs with metal panels, sheet metal, shingles, roofing felt, as well as installation of triangles on flat roofs
- Integrated flange washer with EPDM seal guarantees tightness at the point of penetration through the roof covering
- M10 metric thread compatible with standard adapters and PV mounting systems
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