Specialized Plastic Bolt Manufacturing
Bluemay Buffalo Bolts were originally developed over 50 years ago by Bob Butcher, (one of the founders of the company) under our own patent to provide a superior plastic fastening solution. By insert-molding a range of precision-engineered bolt head designs onto our own high-quality plastic threaded rod, we created a bolt that delivers significantly greater strength and reliability than conventional fully molded alternatives. This process also provides a more cost-effective solution than machining from bar, while ensuring improved consistency, dimensional accuracy and overall product quality.
Manufactured in-house using Bluemay threaded rod, Bluemay Buffalo Bolts are available with a wide selection of head types including panel, hexagon, coach, cheese, eye and wing. The threaded section is produced from nylon 66, offering excellent tensile strength and load-bearing performance, while the heads are molded from nylon 6 to enhance impact resistance and durability. This carefully engineered material combination results in a bolt that is exceptionally strong yet lightweight.
Bluemay Buffalo Bolts also provide outstanding resistance to corrosion and vibration, making them ideal for demanding industrial and moisture-prone environments. In addition, they offer excellent thermal and electrical insulation properties, making them suitable for applications where conductivity must be minimized.
For alternative applications, Bluemay Buffalo Bolts are also available in polypropylene and with colored heads to support identification, aesthetic requirements or specific operational needs.
Our Buffalo Bolts combine a nylon 66 threaded rod, offering high tensile strength, with a nylon 6 molded head for improved impact resistance.
Produced using a precision insert-molding process, the head is securely bonded to the rod, creating a lightweight yet exceptionally strong bolt with excellent resistance to corrosion, vibration and electrical conductivity.

| Size | A | B | C | D |
|---|---|---|---|---|
| M6 | 19.5 | 6 | 5 | 7.2 |
| M8 | 26.8 | 9 | 9.5 | 9.5 |
| M10 | 27 | 11 | 10.5 | 10 |
| M12 | 32 | 13 | 11.5 | 11 |
| M16 | 34 | n/a | n/a | 18 |
Material: Nylon | Dimensions shown in mm
| Size | A | B | C |
|---|---|---|---|
| M8 | 12.8 | 14.5 | 8 |
| M10 | 16.6 | 19 | 9.2 |
| M12 | 18.7 | 21 | 11.3 |
| M16 | 24 | 27.8 | 13 |
| M20 | 29.6 | 34 | 16.3 |
Material: Nylon | Dimensions shown in mm
| Size | A | B | D | E | F |
|---|---|---|---|---|---|
| M10 | 27 | 11 | 6 | 4 | 10 |
| M12 | 32 | 13 | 6 | 4.5 | 11 |
Material: Nylon | Dimensions shown in mm
| Size | A | B | C | D |
|---|---|---|---|---|
| M10 | 17.5 | 1.5 | 1.5 | 10 |
| M12 | 19.5 | 1.5 | 1.5 | 12.5 |
Material: Nylon | Dimensions shown in mm
| Size | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| M12 | 22 | 9.5 | 20 | 28 | 2.5 | 9.5 | 20 |
Material: Nylon | Dimensions shown in mm
| Size | A | B | C | D |
|---|---|---|---|---|
| M8 | 40.5 | 25 | 13.5 | 16.5 |
| M10 | 41.5 | 25 | 13.5 | 18 |
| M12 | 43.5 | 27 | 15.5 | 18 |
Material: Nylon | Dimensions shown in mm
Technical Data
Recommended maximum safe vertical working loads for Bluemay Nylon Threaded Rod, Buffalo Bolts and T-nut Connectors:
66lb (30kg)
110lb (50kg)
176lb (80kg)
264lb (120kg)
344lb (165kg)
474lb (215kg)
Temperature range: from +122ºF to -22ºF
Please note: figures quoted are for vertical loads only – no data is available for inclined or horizontal loads.
Tightening and Use of Nuts
Care should be taken not to overtighten nuts when used with thermoplastic threaded rod.
NUTS SHOULD BE TIGHTENED BY HAND AND GIVEN HALF A TURN WITH A WRENCH.
WE DO NOT RECOMMEND THE USE OF STEEL NUTS WITH THERMOPLASTIC THREADED ROD OR BOLTS.
For complete technical data information, please see our Stock Products Technical Data page.


