1/4"-20 x 2-1/2" T-30 Flat Head Self Tapping Trailer Deck Screws, 100 Pack | Star drive (six lobe) floorboard screws fasten wood decking to steel trailer and truck bed frames. Type F, phosphate.

Features

• TRAILER DECK & FLOORBOARD APPLICATIONS Specifically engineered for fastening wood planks to metal trailer frames, flatbed trucks, utility trailers, cargo trailers, and horse/livestock trailers. The flat countersunk head sits flush with the deck surface for a smooth, snag-free load floor critical for safe and efficient loading and unloading.
• TYPE F THREAD-CUTTING POINT Unlike self-drilling screws, this Type F tip requires a pre-drilled pilot hole (7/32" recommended), then cuts clean, precise threads as it seats. This creates a tighter mechanical grip than standard screws and prevents loosening under vibration and dynamic load exactly what trailer decking demands.
• SIX-LOBE STAR DRIVE (T-30) The T-30 Torx drive design virtually eliminates cam-out and stripped heads during installation. Use a T-30 bit with a standard drill or impact driver for fast, reliable installation especially when you're driving dozens or hundreds of screws through a full deck replacement.
• BLACK PHOSPHATE FINISH ALLOY STEEL CONSTRUCTION Hardened alloy steel core delivers the shear strength and torque resistance needed for structural fastening. Black phosphate finish provides corrosion resistance and acts as a lubricant during installation. Also called: Six-Lobe Screw | Torx Screw | Decking Screw | Star Drive Screw | Floorboard Screw.
• Versatile Professional Use: These screws are designed to meet the rigorous demands of contractors, automotive professionals, manufacturers, and DIY enthusiasts; From securing floorboards in trailers to assembling furniture and machinery, do it all
• PILOT HOLE GUIDE 7/32" BIT RECOMMENDED Type F screws require a pre-drilled pilot hole before installation. Use a 7/32" drill bit for standard applications. Drill through the wood and into the metal frame, then drive the screw the cutting edges will form tight threads in the metal as you seat it. Pro tip: use one drill for the bit and a second with the T-30 driver to speed up a full deck replacement.
• COMPATIBLE APPLICATIONS Flatbed trailers, utility trailers, horse & livestock trailers, cargo trailers, drop deck trailers, curtain vans, dry vans, gooseneck trailers, truck beds. Also used for securing apitong hardwood decking, oak, and treated lumber to steel cross-members and C-channel frames
• ALSO CALLED / SEARCH TERMS Floorboard Screw | Trailer Floor Screw | Decking Screw | Six-Lobe Screw | Torx Screw | Star Drive Screw | Type F Screw | Thread Cutting Screw | Wood to Metal Screw | Countersunk Trailer Screw. If you searched any of these terms, this is your screw
• WHY NEWPORT FASTENERS We're an industrial fastener supplier, not a general merchandise reseller. Every SKU we carry is sourced to specification. With 698 verified reviews and a 4.7-star rating on this product, you can order with confidence. Questions about specs, quantities, or compatibility? We answer messages fast.

Description

A countersunk, six-lobe (torx) thread cutting screw with machine screw thread pitch, blunt point, tapered entering threads, and multiple cutting edges. Floorboard screws are, by definition, available in much longer sizes than standard type-F screws. Common For Trailer Flatbed Also Called “Six Lobe” Also Called “Star Drive” Also Called “Decking Screw” Black Phosphate Will Thread Into A Pre-Drilled Hole Tapping Point = “F” Type of screw: Thread cutting screws Screw type: Type F Material: Alloy steel Coating: Black phosphate Drive type: Star drive (also known as Torx drive) Head type: Flat head These screws are designed to cut their own threads into materials such as wood or plastic, eliminating the need for a pre-drilled hole. The black phosphate coating provides some resistance to corrosion and wear, making these screws suitable for outdoor applications. The star drive provides better grip and less slippage compared to other drive types, allowing for easier and more efficient installation. The flat head allows for a flush installation, making it a good choice for applications where a smooth surface is desired. These screws are specifically designed for use in floorboard trailer decks, where they can provide a secure and durable fastening solution.

Material: Alloy Steel

Head Style: Flat

Item dimensions L x W x H: 2.5 x 0.25 x 2.5 inches

Exterior Finish: Phosphate

Thread Size: 1/4"-20

Item Dimensions: 2.5 x 0.25 x 2.5 inches

Thread Size: 1/4"-20

Item Weight: 2.9 Pounds

Thread Coverage: Fully Threaded

Fastener Size: 1/4-20 x 2 1/2 inch

Size Name: 1/4-20 x 2 1/2 inch

Item Diameter: 0.25 Inches

Compatible Groove Diameter: 0.25 Inches

Number of Pieces: 100

Outside Diameter: 0.25 Inches

Brand: Newport Fasteners

Color: Black

Fastener Type: Machine Screw

Set Name: Newport Fasteners 1/4-20 x 2-1/2" Trailer Deck & Floor Screw Set (100 Piece)

Number Of Items: 100

Part Number: 688124-100

Model: 688124-100

Unit Count: 100 Count

Manufacturer: Newport Fasteners

Screw Head Style: Flat

Screw Point Style: Type F Point

Head Type: Flat

Thread Type: Right Hand

Set Screw Thread Type: Unified National Coarse (UNC)

Thread Style: Right Hand

Thread Class: standard

Drive System: Torx

Material Type: Alloy Steel

Exterior Finish: Phosphate

Metal Type: Alloy Steel

Finish Types: Black Phosphate with Oil Coating