Material page for soft-tip set screws (nylon and brass) in A4 Stainless Steel (ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80). The sizes below are the ones we supply; there is no published dimensional standard for this article, so the table rather than a standard number is what to quote. Corrosion behaviour is superior, including marine and chloride environments and the service range is approx. -200 °C to +400 °C, subject to the property class and the joint.
Why Choose A4 Stainless Steel for Soft-Tip Set Screws (Nylon and Brass)
Specified for marine, coastal and chemical applications. For soft-tip set screws (nylon and brass), this matters when superior, including marine and chloride environments is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ISO 3506 group A4 (316 / 1.4401), commonly supplied A4-80 |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C, subject to the property class and the joint |
| Corrosion characteristic | Superior, including marine and chloride environments |
Corrosion Behavior in Service
A4 (316) adds 2–3% molybdenum to the A2 (304) composition, which dramatically improves resistance to chloride-pitting corrosion. For Soft-Tip Set Screws (Nylon and Brass) in marine, coastal, swimming-pool or food-processing environments, A4 is the default selection.
Comparable Grades
For Soft-Tip Set Screws (Nylon and Brass), the alternative stainless grade is A2 (304). Choose A2 (304) for general use and A4 (316) wherever chlorides are present; the molybdenum in A4 is the whole difference. Remember that stainless is the corrosion answer, not the strength answer — for load, look at class 8.8 or 10.9 instead.
Using Stainless Fasteners in Aluminum
The galvanic couple here runs the wrong way: aluminum is the less noble metal, so it corrodes and the fastener does not. What governs the rate is the ratio of areas — a large anode and a small cathode is a tolerable combination, the reverse concentrates the attack into thin material around the hole. An isolating washer plus sealant breaks the circuit; where that is impractical, match the fastener to the substrate.
Sizes of Soft-Tip Set Screws (Nylon and Brass) Available in A4 Stainless Steel
| Thread size | Tip length (mm) | Holding force vs steel point | Max temperature (°C) | Drive | Common length range (mm) | Marks the shaft |
|---|---|---|---|---|---|---|
| M4 | 2.0 | approx. 40% | 100 | Hex socket | 6~20 | No |
| M5 | 2.5 | approx. 40% | 100 | Hex socket | 6~25 | No |
| M6 | 3.0 | approx. 40% | 100 | Hex socket | 8~30 | No |
| M6 | 3.0 | approx. 70% | 250 | Hex socket | 8~30 | No |
| M8 | 4.0 | approx. 70% | 250 | Hex socket | 10~40 | No |
| M10 | 5.0 | approx. 70% | 250 | Hex socket | 12~50 | No |
Dimensions are independent of the material: the table above lists the sizes supplied, and on this page every one of them is quoted in A4 Stainless Steel. The catalogue's default material column has been omitted here so it cannot be read as contradicting that.
Custom manufacturing · Made to drawing
Need this screw in a grade that is not listed?
A4 Stainless Steel is one of the grades the catalog describes. Where the standard stops, the drawing takes over: fine pitches, left-hand threads, partial threading, and property classes above the catalogued grade where material and heat treatment allow. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
