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Female-Female Bobbin Mount 40x35mm M8 70 Shore - 4035FF08-70
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Sealey FWA817 Flat Washer DIN 125 M8 x 17mm Form A Zinc Pack of 100
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Technical Specification
PRODUCT NUMBER 4020MF23-604020MF25-605025MM25-454035MF23-704035MF25-70
Type Bobbin MountBobbin MountBobbin MountBobbin MountBobbin Mount
Length 20mm25mm35mm35mm
Height 20mm
Size 40x20mm40x20mm50x25mm40x35mm40x35mm
Deflection 1.61.623.13.1
Diameter 40mm50mm40mm40mm
Diameter Range 26-50mm26-50mm26-50mm26-50mm
Length Range 11-25mm11-25mm26-50mm26-50mm
Mount Dimension 40mm
Shore Hardness 60457070
Thread M8M10M10M8M10
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Q 1. What is the maximum load capacity of the 4035FF08-70 bobbin mount?

A. This mount carries a maximum load of 79.0 kg with a deflection of 2.5 mm, making it the highest-load, least-deflecting option in the 40x35mm M8 Female-Female range.

Q 2. What does 70 Shore A hardness mean for this mount's performance?

A. At 70 Shore A, this is the firmest grade in the 40x35mm M8 family. Harder grades carry higher loads with less movement; softer grades give greater deflection and better vibration isolation at lower loads. The 70 Shore A grade is appropriate where positional restraint and resistance to shock or impact are required.

Q 3. In what directions can this mount be loaded?

A. The mount may be loaded in shear, compression, or a combination of both, providing flexibility in installation orientation.

Q 4. What thread size does the 4035FF08-70 use, and what does female-female mean?

A. Both threaded faces are M8 female, allowing a bolt or stud to be fastened from each side for a direct inline connection without additional adaptor hardware.

Q 5. What types of equipment and industries is this mount used in?

A. Source-confirmed applications include diesel engines, generator sets, industrial machinery, agricultural and off-highway equipment, marine installations, and power generation plant. Industries served also include construction, railway and mass transit, automotive, and military and defence.

Q 6. Are other hardness grades available in the same 40x35mm M8 size?

A. Yes — the same geometry is available as 45 Shore A (SKU 4035FF08-45) for greater deflection and lighter-duty isolation, and 60 Shore A (SKU 4035FF08-60) as a mid-range option. Related Female-Female Bobbin Mounts in larger sizes include SKUs 100100FF16, 10040FF16, 10045FF16, 10050FF16, 10055FF16, and 10060FF16.

Q 7. Are custom materials or sizes available for this bobbin mount?

A. Yes — stainless steel metalwork and oil-resistant or high-temperature rubber compounds, as well as additional and custom sizes, are available on request.

Q 8. How long does delivery take?

A. Standard UK mainland delivery is 3–5 working days. Next-day delivery is available on most products and will appear as an option at checkout where eligible.

Q 9. What is your returns policy?

A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN).

Q 10. What is your returns policy?

A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN).

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