410 Stainless Steel Truss Head Self Drilling Screw
Specification
410 Stainless Steel Truss Head Self Drilling Screws
A broad head and low-profile shape make these screws a practical option for fastening panels and thin components where head coverage matters. PO JUN offers #8 410 stainless steel truss head self drilling screws in lengths from 1/2" to 2", combining a cross-recess drive with a fluted drill point.
The truss head remains above the assembly surface without requiring a countersunk seat. Within a confirmed material and thickness range, the drill point creates the hole before the threads engage, allowing drilling and fastening in one installation sequence.
Broad Head Coverage Without Countersinking
Wide Bearing Area
The truss head provides a broad contact area around the fastening hole. This can be useful for sheet-metal panels, brackets, and other components where a smaller head may not provide the desired coverage.
Actual resistance to pull-through or surface deformation depends on the head dimensions, panel material, hole size, and tightening conditions.
Low-Profile, Rounded Shape
The shallow head profile suits exposed fastening positions where a taller hex head would be less desirable. It offers a rounded appearance while retaining access to the drive recess for assembly and servicing.
Cross-Recess Drive
The recessed drive accepts a matching driver bit for installation from above the head. For production assembly, confirm the recess type and bit size so the tool seats properly and reduces the risk of recess damage.
410 Stainless Steel Truss Head Self Drilling Screw Specifications
Available Sizes
| Specification | Details |
|---|---|
| Nominal screw size | #8 |
| Available lengths | 1/2", 5/8", 3/4", 1", 1-1/4", 1-1/2", 2" |
Head style: Truss head
Drive: Cross recess
Point: Self-drilling point
Washer option: Additional washers can be requested for the listed sizes.
Confirm the required washer configuration when ordering. An additional washer does not automatically provide a weather seal.
Applications Where a Wider Head Helps
These screws can be evaluated for assemblies that need surface-mounted fastening with a broad head rather than a recessed screw.
- Equipment covers and sheet-metal panels: Attach covers to compatible metal supports while keeping the exposed head relatively low.
- Ventilation components: Fasten duct accessories and light sheet-metal fittings where the selected drill point matches the receiving material.
- Mounting clips and brackets: Provide head coverage over the attachment hole, subject to the bracket’s dimensions and load requirements.
- Display and enclosure assemblies: Secure panel components where a rounded head is preferred over an external hex profile.
For thin or coated panels, an assembly trial helps confirm the finished appearance and whether the selected tightening method leaves acceptable surface marks.
Select by Panel Thickness, Not Screw Length Alone
Start with the materials being joined and the thickness of each layer. The screw must be long enough for the assembly, but the drill point must also be capable of penetrating the receiving material before the threads engage.
A longer screw does not necessarily drill thicker steel. Drill-point geometry, screw hardness, substrate hardness, and installation speed all affect performance. If the joint includes a gap, spacer, or several layers, a simple cross-section drawing helps clarify the required configuration.
For finished surfaces, also check the head diameter and available clearance around the fastening position. The wider head must not interfere with folds, trim, or adjacent parts.
410 Stainless Steel and the Service Environment
410 is a hardenable stainless steel used in drilling fasteners where finished hardness is important. Material grade alone, however, does not establish drilling capacity or suitability for every outdoor environment.
Tell PO JUN if the assembly will be exposed to persistent moisture, salt, or cleaning chemicals. These conditions help determine the material, surface treatment, and any testing requirements to review before ordering.
Request a Quote from PO JUN
Send your required lengths, quantities, panel material, and receiving-material thickness. Include any washer requirement and attach a drawing or sample reference if you are matching an existing fastener.
For repeat production orders, you can submit several lengths in one size list. Add the delivery country, requested delivery date, and any packaging or inspection-document needs to help define the quotation.
Share your panel assembly details to discuss the truss head screw configuration for your next order.
Frequently Asked Questions
Can a truss head screw replace a countersunk screw?
Not as a direct replacement. A truss head seats above the surface, while a countersunk head fits into a tapered recess. The mounting surface and clearance requirements must be reviewed before changing head styles.
Are these screws suitable for oversized or slotted holes?
The wider head may provide useful coverage, but head diameter alone is not enough to confirm suitability. Check the opening dimensions, panel thickness, bearing area, and joint load.
Can these screws drill stainless steel sheet?
Suitability must be confirmed for the specific sheet grade, hardness, and thickness. A 410 stainless steel screw should not be assumed capable of drilling every stainless steel substrate.
Can the screw be removed and installed in the same hole?
Removal can alter the formed threads in thin material. Before reinstallation, inspect the hole and screw for damage and confirm that the joint can still achieve the required clamping performance.