M3 M4 Connecting Bolts with Sleeves Brass finish / A2 stainless steel / Chrome

Also known as Back-to-Back or Male to Female Screws are recommended to secure internal door handles, doorknobs, roses, and escutcheons, as screws that cannot allow the handle to be pulled through. 

Adjustable to the right length with the right tools. Recommended for internal doors and NOT external doors, due to them not being security screws.

Specifications:

M3 / 3mm Silver / Brass finish Connecting Screws  

50mm length with 20mm sleeve length 

Slotted and flat heads, countersunk bolts

Full thread screws, easy adjustable to the right length with the right tools. 

Sleeve Diameter: 3.8mm

Sleeve Head Diameter: 4.9mm

Bolt Head: 5.5mm overall outer diameter.

M3 screws will suit doors of 35mm - 55mm thickness

Sleeve and Screw together are around 55mm -65mm based on the tightening force

NOTE: M3 Brass finish sleeve & the bolt has a very thin layer of brass; is more silver coloured than brass. Please consider this before you purchase.

M4 / 4mm Chrome / Brass finish Connecting Screws

60mm bolt length with 20mm sleeve length. Snap-off adjustable length 

Phillips heads. Raised head Sleeve, Flat Countersunk Bolt

Snap-off adjustable bolt length with 5mm increments 55mm / 50mm / 45mm / 40mm / 35mm

Sleeve Diameter: 5mm

Sleeve Head Diameter: 6.9mm

Bolt Head: 7.2mm overall outer diameter.

M4 screws will suit doors of 35mm - 65mm thickness

Sleeve and Screw together are around 65mm -75mm based on the tightening force

NOTES: Pictures are for illustrative purposes.  

Please allow 0.5mm measurement discrepancies. Dimensions are subject to manufacturer specifications tolerance. 

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Same working day dispatched by Royal Mail. (For orders placed by 4pm)

Royal Mail 2^nd class in the UK is normally delivered within 2 to 3 working days but can take up to 10 working days from the dispatch date. (International standard delivery takes 5 to 7 working days but can take up to 21 days)

Note: Where a multi-buy from DIYmadeEasy_byFlo is placed 1^st Class Services are mostly provided (not in conjunction with other discounts / for orders less than £10) 

Where delivery details were wrongly provided, a refund or replacement will be considered void, unless the right information is amended and confirmed (by DIYmadeEasy_byFlo) before dispatch.

In some circumstances, for refunds / returns, the postage costs will be supported by the buyer.

Thank you for understanding.