Lee Spring Catalog Procurement Checklist: Springs, Washers, and What Air Compressor for a Nail Gun

What This Checklist Is For

Last quarter, when I audited our spring orders, I caught a $470 mistake: someone ordered a stainless steel fender washer 830610 when the drawing called for a spring washer. The vendor caught it before it went to production, but it made me rethink how we use the Lee Spring catalog. I'm a procurement manager at a mid-size manufacturing company. I've managed our MRO budget for six years, negotiated with 15+ vendors, and tracked every order in our cost system. This is the checklist I built for our team. If you're buying industrial springs for the first time, or if you've been ordering long enough to rely on muscle memory, it should help you avoid paying for the same mistake twice.

Before you dive in: if you searched "Woodlands Medical Massage Michelle Lee Spring TX," that's not the Lee Spring I work with. Most of my colleagues type "lee-spring" as a search query and expect the Lee Spring catalog to come up. It does, but the same phrase can also point to a personal services business in Spring, Texas. This article is about industrial springs, not massage. And if you're looking for an air compressor like the CAT-10020C, that's not a spring part number either. But the procurement principle is the same: identify the actual requirement before you order.

The Five-Step Lee Spring Catalog Checklist

Step 1: Identify the Product Family

The first question is not "what's the part number?" It's "what kind of part is this?" In my opinion, that's where most spring-ordering problems start. Search the Lee Spring catalog for "compression spring," "extension spring," "torsion spring," or "spring washer" and you'll get different product families. A fender washer is a flat washer, not a spring washer. It distributes load over a wider area, while a spring washer is designed to add tension or absorb vibration. They are not substitutes for each other.

If your drawing says "stainless steel fender washer 830610," order a flat washer from a fastener supplier that carries that size. Don't assume any stainless washer in the same nominal size will work. The OD, ID, and material grade all matter. For a spring, the same logic applies. A compression spring might look interchangeable with a similar one from another bin, but if the rate or free length is off, it can break in a week.

Step 2: Search With a Real Specification

The catalog search works best when you feed it geometry, not guesswork. For a compression spring, you need free length, outside diameter, wire diameter, and rate. For an extension spring, add initial tension and hook type. For a torsion spring, you need leg length, wind direction, and the angle you expect the leg to move.

If you're replacing a garage door torsion spring, wind direction is non-negotiable. I wish I had tracked how many field replacement failures came from wrong wind direction. I don't have hard data on an industry-wide number, but from our own orders, the number is high enough that we now mark the old spring before we remove it.

Use the online spring calculator if you're not sure. It has been a game-changer for us. The Lee Spring engineering tools will get you in the ballpark. Then confirm with a person before you commit to a custom batch.

Step 3: Check the Details That Cause Returns

Part numbers are useful, but they can be deceptive. A number like "830610" might be a stainless steel fender washer in a fastener catalog and nothing in a spring catalog. That's why I compare the actual dimensions against the drawing every time.

For a replacement spring, measure the old one. Compare wire diameter, outside diameter, free length, number of active coils, total coils, and end type. If the spring is broken, check whether the broken piece changes the free length. That's a detail people often miss. For a fender washer, verify the outside diameter, inside diameter, and material. A 1/4" fender washer with the wrong OD will not work, even if the hole size matches.

To me, the extra three minutes of measuring is cheaper than the credit to rework a $1,200 order.

Step 4: Price the Total Order, Not the Unit Price

In my cost tracking system, I analyze about $180,000 in annual MRO spending. The main thing I've learned is that low unit price is not the same as low total cost. Shipping, minimum order quantity, lead time, and possible rework all belong in the equation.

When comparing quotes, ask for a total landed cost: product price plus freight plus any setup fee plus the cost of waiting. If one vendor quotes a lower unit price but the lead time is six weeks, the "cheap" option can be more expensive than paying a rush fee to get the parts on time. Per the Lee Spring catalog as of April 2026, stock status is updated online, but I'd still verify current pricing and lead time with a quote.

So glad I started checking lead times before approving purchase orders. We almost ordered from a lower-priced supplier that couldn't ship for five weeks. The job wasn't going to wait, and the extra $300 in freight didn't matter compared to $4,000 in line downtime. If a quote doesn't include freight, that's a red flag.

Step 5: Match the Supporting Tool to the Application

Sometimes a spring order is just the beginning. If you're installing a spring on a new build, you might also need a nail gun, and that's where the "what air compressor do I need for a nail gun" question comes up. The answer is not a universal recommendation. It depends on the nailer's air consumption, usually expressed in SCFM at 90 PSI, and it depends on the compressor's delivered flow.

If someone hands me a requisition that says "air compressor cat-10020c," I ask what tool it will run. A framing nailer needs more air flow than a finish nailer. The model number is a starting point, not the whole spec. Same with springs: a part number is a starting point, but the spec that matters is the one on the drawing.

This step is situation-dependent. If you're just ordering a handful of replacement springs and someone else handles the tools, skip it. But if you're managing the whole project, don't assume the spring supplier can answer compressor questions. They can tell you the spring's load and travel. They probably can't tell you which compressor model is right for your crew's nail guns.

Common Mistakes That Cost More Than the Spring

• Mixing up spring washers and fender washers. Not the same function.
• Ordering from memory instead of the Lee Spring catalog or a current quote. Part numbers and stock status change.
• Ignoring wind direction on torsion springs. Honestly, this causes more returns than it should.
• Picking the lowest unit price without checking lead time or minimums. The bottom line is total cost, not list price.
• Treating a supplier as an expert in every adjacent category. Ask the right specialist.

Bottom Line

Five years ago, I was flipping through printed catalogs and faxing order requests. Now the Lee Spring catalog and engineering tools are online, and the process is faster. What hasn't changed is the basics: load, length, direction, material, and tolerance. The execution has changed, but the fundamentals stay the same.

This checklist worked for us, but our situation is a mid-size manufacturer with predictable ordering patterns. If you're a one-off buyer, some of these steps are overkill. If you're managing a large capital project, maybe add a step for supplier audits. Your mileage may vary.

At the end of the day, the person who saves the most money is usually the one who asks the most boring questions. Verify the part type. Check the dimensions. Calculate the total cost. And if a project needs an air compressor for a nail gun, size it the same way you'd size a spring: by the requirement, not by the model number.