

🔗 Nail the perfect chain length—no more compromises!
The Koch 7640040 Roller Chain Offset Link 4-Pack offers precision half-link chain length adjustments with ANSI B29.1 certified 1/2 inch pitch links made from durable alloy steel. Designed for easy installation and reliable performance in machinery repair, manufacturing, and recreational projects, these offset links solve chain tension challenges with professional-grade quality.
| ASIN | B004HKITWU |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #814,954 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #709 in Power Transmission Roller Chains |
| Brand | Koch Industries |
| Color | Dark Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (166) |
| Date First Available | January 13, 2011 |
| Global Trade Identification Number | 00719961460388 |
| Included Components | 4 |
| Is Discontinued By Manufacturer | No |
| Item Length | 2 Inches |
| Item Package Quantity | 4 |
| Item Pitch | 0.5 Inches |
| Item Weight | 0.336 ounces |
| Item model number | 7640040 |
| Load Capacity | 5 Pounds |
| Manufacturer | Koch |
| Material | Alloy Steel |
| Part Number | 7640040 |
| Recommended Uses For Product | Machinery repair/maintenance, Manufacturing (conveyor systems, bicycles, industrial equipment) |
| Roller Diameter | 0.5 Inches |
| Size | #40 |
| Specification Met | ANSI B29.1 |
| Strand Type | Single |
| Style | Offset Link |
| UPC | 719961460388 |
T**.
These Are Awesome
I built a minibike and no matter what I tried, the chain was either too short or a link too long. If I removed the link on the long chain, then it was too short. I Tried adjusting the engine position, which was limited. Moving the rear axle around which was limited too, nothing seemed to give me that perfect tension. I came across these offset links. They saved me from the frustration. The chain that was cut and seemed too short, I added this offset link and bingo, perfect fit. It's like adding half a link. I have run the chain with the offset link for months now with no chain issues whatsoever. Glad to find these and happy with how they function.
C**S
Can come in VERY handy!
I was making three chains for a Tru-Cut reel mower, from one length of 10ft #40 chain. I bought regular connectors pins, then saw these afterward and thought "just in case" and picked up a pack to have on hand on the off-chance I'd need them. And boy was I glad I did! Turned out TWO of the factory chains I removed from the mower were made with a half link, so I never would have gotten the right length without having these! They also use an easy little cotter pin to lock them on, instead of the snap-on pins the full-length connector pins use which are a PITA. Highly recommended.
S**N
Good #40 half link
Works as designed to add half a link in #40 chain
R**H
quality not what it was when us made. (low quality steel)
chain is in lite duty use, wear seems high. pins break frequently in low torque use. shipping quick. price fair.
A**M
Would recommend
Held up so far
S**M
Good piece
Works very well, strong as well, used these in a pretty heavy application and never broke one
R**E
Quality product
good quality as advertised. Fit is good, I was very satisfied with the product, I would recommend this to my friendss with out reservation
C**Y
Quality
Works as they should
Trustpilot
3 weeks ago
2 weeks ago