A2 Stainless Steel Headless Clevis Pins (Plain and with Cotter Pin Holes) combine the dimensional form of ISO 2340 with the material properties of grade ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70: good general corrosion resistance, largely non-magnetic, service range approx. -200 °C to +400 °C, subject to the property class and the joint. This page summarizes the grade data, its corrosion behavior in service, the comparable grades, and the sizes supplied.
Why Choose A2 Stainless Steel for Headless Clevis Pins (Plain and with Cotter Pin Holes)
The most common stainless group for indoor and general outdoor fasteners. For headless clevis pins (plain and with cotter pin holes), this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ISO 3506 group A2 (304 / 1.4301), commonly supplied A2-70 |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C, subject to the property class and the joint |
| Corrosion characteristic | Good general corrosion resistance |
Galvanic & Galling Considerations
For stainless headless clevis pins (plain and with cotter pin holes) the compatibility question is galvanic rather than galling: joined to aluminum or galvanized steel in wet service, stainless drives corrosion of the less-noble metal. Isolate with a coating, sleeve or non-conductive washer where the joint sees moisture. Note also that stainless is softer than hardened carbon steel, so where the part carries a wear or shear duty, check the load against the grade before substituting.
Comparable Grades
For Headless Clevis Pins (Plain and with Cotter Pin Holes), the alternative stainless grade is A4 (316). 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 Headless Clevis Pins (Plain and with Cotter Pin Holes) Available in A2 Stainless Steel
| Nominal diameter d (mm) | Type | d_1 (mm) | d_2 (mm) | c (mm) | l_e (mm) | Length range l (mm) | Reference standard |
|---|---|---|---|---|---|---|---|
| 3 mm | Clevis pins without head | 3 | 0.8 | 1 | 1.6 | 6~30 | ISO 2340 |
| 3 mm | Clevis pins without head (with split pin holes) | 3 | 0.8 | 1 | 1.6 | 6~30 | ISO 2340 |
| 4 mm | Clevis pins without head | 4 | 1 | 1 | 2.2 | 8~40 | ISO 2340 |
| 4 mm | Clevis pins without head (with split pin holes) | 4 | 1 | 1 | 2.2 | 8~40 | ISO 2340 |
| 5 mm | Clevis pins without head | 5 | 1.2 | 2 | 2.9 | 10~50 | ISO 2340 |
| 5 mm | Clevis pins without head (with split pin holes) | 5 | 1.2 | 2 | 2.9 | 10~50 | ISO 2340 |
| 6 mm | Clevis pins without head | 6 | 1.6 | 2 | 3.2 | 12~60 | ISO 2340 |
| 6 mm | Clevis pins without head (with split pin holes) | 6 | 1.6 | 2 | 3.2 | 12~60 | ISO 2340 |
| 8 mm | Clevis pins without head | 8 | 2 | 2 | 3.5 | 16~80 | ISO 2340 |
| 8 mm | Clevis pins without head (with split pin holes) | 8 | 2 | 2 | 3.5 | 16~80 | ISO 2340 |
| 10 mm | Clevis pins without head | 10 | 3.2 | 2 | 4.5 | 20~100 | ISO 2340 |
| 10 mm | Clevis pins without head (with split pin holes) | 10 | 3.2 | 2 | 4.5 | 20~100 | ISO 2340 |
| 12 mm | Clevis pins without head | 12 | 3.2 | 3 | 5.5 | 24~120 | ISO 2340 |
| 12 mm | Clevis pins without head (with split pin holes) | 12 | 3.2 | 3 | 5.5 | 24~120 | ISO 2340 |
| 14 mm | Clevis pins without head | 14 | 4 | 3 | 6 | 28~140 | ISO 2340 |
| 14 mm | Clevis pins without head (with split pin holes) | 14 | 4 | 3 | 6 | 28~140 | ISO 2340 |
| 16 mm | Clevis pins without head | 16 | 4 | 3 | 6 | 32~160 | ISO 2340 |
| 16 mm | Clevis pins without head (with split pin holes) | 16 | 4 | 3 | 6 | 32~160 | ISO 2340 |
| 18 mm | Clevis pins without head | 18 | 5 | 3 | 7 | 35~180 | ISO 2340 |
| 18 mm | Clevis pins without head (with split pin holes) | 18 | 5 | 3 | 7 | 35~180 | ISO 2340 |
| 20 mm | Clevis pins without head | 20 | 5 | 4 | 8 | 40~200 | ISO 2340 |
| 20 mm | Clevis pins without head (with split pin holes) | 20 | 5 | 4 | 8 | 40~200 | ISO 2340 |
| 22 mm | Clevis pins without head | 22 | 5 | 4 | 8 | 45~200 | ISO 2340 |
| 22 mm | Clevis pins without head (with split pin holes) | 22 | 5 | 4 | 8 | 45~200 | ISO 2340 |
| 24 mm | Clevis pins without head | 24 | 6.3 | 4 | 9 | 50~200 | ISO 2340 |
| 24 mm | Clevis pins without head (with split pin holes) | 24 | 6.3 | 4 | 9 | 50~200 | ISO 2340 |
| 27 mm | Clevis pins without head | 27 | 6.3 | 4 | 9 | 55~200 | ISO 2340 |
| 27 mm | Clevis pins without head (with split pin holes) | 27 | 6.3 | 4 | 9 | 55~200 | ISO 2340 |
| 30 mm | Clevis pins without head | 30 | 8 | 4 | 10 | 60~200 | ISO 2340 |
| 30 mm | Clevis pins without head (with split pin holes) | 30 | 8 | 4 | 10 | 60~200 | ISO 2340 |
Dimensions are independent of the material: every size above is available in A2 Stainless Steel.
Custom manufacturing · Made to drawing
Need this pin in a grade that is not listed?
A2 Stainless Steel is one of the grades the catalog describes. Diameter, length, tolerance class, hardness and end form are specifiable. Ground diameters are held after heat treatment rather than before. Made by cold heading or turning.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
