166-3777 25 mm Long Button Head Screw
Cat® Button Head Machine Screw (Hex Socket Drive)
Description
Cat® fastener parts are designed for specific applications based on size, strength, clamp load and past performance, information other manufacturers do not have. They are carefully selected to last until machine rebuild or end of life. Non-Cat hardware and fasteners may appear to fit your machine, but no one else knows your equipment the way we do.
These are small internal thread-forming screws.
Features
- Cat fasteners are manufactured to precise specifications for durability, reliability and high efficiency
- Strength and Quality – Fasteners meet or exceed ISO, ASTM, ASME and SAE requirements.
- Cat bolts, nuts and washers are specifically designed to work together as a system to maximize clamping force.
- Coating meets the special requirements of different applications (RoHS compliant).
Applications
Cat bolts form a high-performance system with mating hardened washers and nuts to produce consistent, high clamping force. You can trust Cat fasteners to help you build, maintain or rebuild in most machine and shop applications worldwide.
Specifications
| Pitch | 1 mm |
|---|---|
| Coating | Zinc Flake |
| Handle Length | 3 mm (0.12 in) |
| Bolt Type | Rounded Head (Pan) |
| Material | Alloy Steel |
| Thread Size (Diameter × Pitch) | M6x1 mm |
| Class or Grade | ISO 898-1 Class 12.9 |
| Bolt Length | 25 mm (0.984 in) |
| Thread Direction | RH |
| Thread Size | M6 mm (0 in) |
| Locking Feature | None |
Compatible Equipment
- Generator Sets: 3516C, C4.4, DG30, C7.1, C3.3DE50E0, C3.3DE33E0, C9, G3516C, C7.1DE200E, C4.4DE88E0, G3516, 3512B, 3406C, 3512E
- Cold Planers: SE50 VT, PL83
- Engines: C15, C13, C6.6, C32, C7, C27, C175-16, C18
- Compactors: CB10, C-9
- Dozers: D10T2, D8, D6T, D6R III, D7R II, D8T, D8R, D6N, D6R XL, D10, D6R II, D6R LGP, D6R, D9T
- Excavators: 3516B, 3516E, 3512C, 432, 3508B, 434F2, 657G, 3456
- Wheel Loaders: 906K
- Off-Highway Trucks: 777, 798 AC, 794 AC, 789D, 796 AC, 793F, 777E, 773, 773E, 777D
- Asphalt Pavers: AP355F, AP300F, AD45
Additional information
| Machine Model | 3406C, 3456, 3508B, 3512B, 3512C, 3512E, 3516B, 3516C, 3516E, 432, 434F2, 657G, 773, 773E, 777, 777D, 777E, 789D, 793F, 794 AC, 796 AC, 798 AC, 906K, AD45, AP300F, AP355F, C-9, C13, C15, C175-16, C18, C27, C3.3DE33E0, C3.3DE50E0, C32, C4.4, C4.4DE88E0, C6.6, C7, C7.1, C7.1DE200E, C9, CB10, D10, D10T2, D6N, D6R, D6R II, D6R III, D6R LGP, D6R XL, D6T, D7R II, D8, D8R, D8T, D9T, DG30, G3516, G3516C, PL83, SE50 VT |
|---|---|
| Equipment Type | Excavators, Wheel Loaders, Dozers, Off-Highway Trucks, Compactors, Asphalt Pavers, Cold Planers, Engines, Generator Sets |
| Part Source | Genuine OEM |








