5/16 x 3″ Star Drive Green Lag Saberdrive Screws Bulk Box (40 pcs.)

The Ultimate Construction Screw – Fully specced for structural applications. Star and Hex Drive reduces Cam-out and for easy slip-free driving. Unique serrated thread for secure fastening. (Timber Screws, Hex Head Construction, & Ledger Screws are not equipped with Type 17-point).

3/4″ x 5/8″ x 2-7/8″ Plain Socket Head Shoulder Screws (2 pcs.)

Diameter: 3/4″ Length: 2-7/8″ Material: Steel Finish: Plain Head Style: Socket (3/8″ Socket) Thread Size: 11 (Coarse) Thread Length: 5/8″ Hardness: Alloy Steel Style: Socket Head Type: Shoulder Bolt Box of 2. A shoulder screw differs from machine screws in that the shank is ground to a precise diameter, known as the shoulder, and the threaded portion is smaller in diameter than the shoulder. Shoulder bolt specifications call out the shoulder diameter, shoulder length, and threaded diameter; the threaded length is fixed, based on the threaded diameter, and usually quite short. It is usually used for revolving joints in mechanisms and linkages; when used as a guide for the stripper plate in a die set its called a stripper bolt.

5/16″-18 x 3″ Zinc Grade 2 / A307 Square Head Bolts (10 pcs.)

Diameter: 5/16″ Length: 3″ Material: Steel Finish: Zinc Head Style: Square (1/2″ Wrench) Thread Size: 18 (Coarse) Hardness: Grade 2 / A307 Type: Square Head Bolt Box of 10. A square head bolt has a four-sided head. Compared to standard hex bolts, square bolts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening). Square bolts are typically mated with square-headed nuts.

3/8″-16 x 5″ Zinc Combo Round Head Machine Screws (4 pcs.)

Diameter: 3/8″ Length: 5″ Material: Steel Finish: Zinc Head Style: Round (Phillips|Slotted) Thread Size: 16 (Coarse) Thread Length: Full Type: Machine Screw Box of 4. A machine screw, also called a stove bolt, is generally a smaller fastener threaded the entire length of its shank. Machine screws are used in fastening nearly all types of hard materials. Especially useful in metal-to-metal or where heavy duty fastening is required. Commonly used with flat or lockwashers.