Straight Slot Countersunk Screws Full Dog Point Tip

Precision-engineered fasteners play a critical role in assembly performance, and the straight slot countersunk screw with a full dog point tip offers an exceptional balance of alignment accuracy and flush seating. This fastener family is designed for applications where a flat, unobtrusive surface is required and the dog point ensures pilot-hole guidance to prevent cross-threading. Our inventory includes closely related configurations such as the Slotted CS Head Machine Screws with Full Dog Point, which share the same precise tip geometry but feature a machine screw thread for superior holding strength in tapped holes. When designs call for gradual material engagement, the Single Slotted Tapered Countersunk Fasteners Full Dog Point deliver a tapered underhead that enhances centering in irregular pilot bores. For environments demanding consistent flush installation without snagging, the Slotted Conical Sink Head Screws with Complete Dog Point provides a refined conical bearing surface that mates perfectly with chamfered holes. These variants underscore the versatility of the full dog point design, which consistently reduces assembly time and improves structural integrity. Manufactured from hardened carbon steel, stainless steel grades 304 and 316, and brass, all screws undergo thorough dimensional inspections to meet ASME B18.6.3 and DIN 963 specifications. Surface finishes range from plain and zinc plate to black oxide and hot-dip galvanized, offering reliable corrosion resistance for indoor and outdoor use.

The Straight Slot Countersunk Screws Full Dog Point Tip stands out as a workhorse in precision machinery, automotive assemblies, and electronic enclosures. Its single straight drive slot simplifies manual or automated torque application with a standard flat-blade tool, while the full dog point—a cylindrical, unthreaded pilot extending beyond the screw tip—aligns the fastener axially before thread engagement. This feature is especially valuable in blind-hole assemblies where visual alignment is limited. The countersunk head nests into a matching recess, leaving a smooth surface that eliminates protrusion risks. Below are the core physical parameters:

• Diameter range: #2-56 through 3/8-16 (Unified), M2 to M10 (Metric)
• Length under head: 1/8″ to 4″ (imperial), 3mm to 100mm (metric)
• Head angle: 82° standard, 90° and 100° available on request
• Drive recess: Single straight slot per ANSI B18.6.3
• Dog point diameter and length: Sized per ASME B18.3 or customer specification, typically 1/2 to 2 thread pitches in length
• Thread form: UNC, UNF, UNEF, or ISO metric coarse and fine
• Material grades: Alloy steel (Grade 5 and 8), stainless steel (A2/A4), silicon bronze, and aluminum
• Plating options: Zinc trivalent clear/blue, yellow zinc, black oxide, nickel, cadmium alternatives, and Xylan coatings
• Hardness: Rockwell C32–C44 for heat-treated alloy steel; work-hardened stainless variants available
• Tolerance class: 2A/2B for inch threads, 6g/6H for metric threads

The design ensures accurate starting even in high-speed assembly lines, reducing rejected parts due to misalignment. When selecting a fastener for sheet metal, plastic, or die-cast components, the table below highlights key dimensional pairings we frequently stock:

Custom lengths, dog point dimensions, and plating systems are produced on demand with short lead times. Rigorous sorting and optical inspection guarantee consistent slot geometry and tip concentricity, which minimize cam-out and maximize seating reliability. Whether used in heavy equipment mounting brackets or delicate instrumentation, this fastener category delivers the repeatability that quality-critical sectors demand.