Fast Turn Fittings
M5 x .8 x 20mm Rubber Well Nut
Worry-Free Purchase® by Seel Returnable for any reason and get a full refund
- Return eligible purchases for any reason within the coverage window
- Protection for eligible shipping issues
- Claims and covered refunds handled directly by Seel
Availability, coverage, terms, and the live protection price are shown in your cart.
Shipping calculated at checkout. Delivery timing varies by item and location.
View full return policy
M5 x .8 x 20mm Rubber Well Nut
Worry-Free Purchase® by Seel Returnable for any reason and get a full refund
- Return eligible purchases for any reason within the coverage window
- Protection for eligible shipping issues
- Claims and covered refunds handled directly by Seel
Availability, coverage, terms, and the live protection price are shown in your cart.
Shipping calculated at checkout. Delivery timing varies by item and location.
View full return policy
Details
The M5 x .8 x 20mm Rubber Well Nut by Fast Turn Fittings enables secure fastening in tight or hard-to-reach spaces by compressing rubber inside a 9.5mm hole when paired with an M5 bolt. Its black rubber with metal insert fits holes sized 9.5mm (3/8") with a grip range of 7.92mm to 11.43mm, providing a reliable hold where traditional nuts won't fit.
- Designed for fastening in constrained or thin materials
- Compresses to create secure holds with standard M5 bolts
- Fits 9.5mm holes with grip range of 7.92mm to 11.43mm
- Black finish for discreet hardware applications
Dimensions & sizing
Fits holes sized 9.5mm (3/8") with a grip range of 7.92mm to 11.43mm.

M5 x .8 x 20mm Rubber Well Nut