One caution when dealing with hardware store fasteners is that even a Grade 8-rated bolt may not be as strong as advertised. This is the typical bolt marking for a Grade 5 (left) and Grade 8 (right). A Grade 8 bolt is rated by the SAE as having a yield strength of 130,000 psi. Yield strength is defined as the load applied before it begins to permanently deform. One caution when dealing with hardware store fasteners is that even a Grade 8-rated bolt m We also discovered a local automotive fastener company called TMK. Prices from this company for typical Grade 5, 8, and stainless capscrews are seriously less than any other place we've found. According to TMK, steel prices have come down as of late, and while many other outlets have retained their previous pricing, TMK has decided to pass along this cost savings to its customers. While TMK's prices are excellent, the company does not have a website-but a new catalog is on the way. If you know what you want, you can get a quote over the phone pretty quickly. We priced three of the most common fasteners, and at these prices you can definitely afford a collection. Just to give you a comparison, we priced a package of three 3/8x1-inch stainless steel bolts for $3.89 at a national chain hardware store. On a single bolt comparison, the hardware store is 13 times the TMK price, not counting shipping. While convenience is with the hardware store, the prices are painful. We found a similar situation with Grade 8 fasteners. The hardware store wanted 40 cents each for 3/8x1 bolts, while TMK's price was less than 9 cents, both based on a box of 100. Of course, you'll need to determine the various sizes and lengths you might want, but at these prices you can easily afford multiple boxes in various sizes. Then you can perform a ceremony and finally bury that can full of rusty bolts. Bolt Price Comparison Bolt Depot Bolt Grade 5 (100) Grade 8 (50/100) Stainless (100) 5/16 x 1 $11.93 ($0.12 each) $7.67 (50) ($0.15 each) $20.63 ($0.21 each) 3/8 x 1 $16.13 ($0.16 each) $11.23 (100) ($0.11 each) $28.51 ($0.285 each) TMK Bolt Grade 5 (100) Grade 8 (100) Stainless (100) 1/4 x 1 $1.95 $2.65 $5.00 5/16 x 1 $2.50 $3.90 $6.60 3/8 x 1 $6.45 $8.55 $9.75 This is the Classic Tube PN K3S stainless steel 3/16-inch tubing kit. The company offers assorted stainless and mild steel flare nuts individually. This is the Classic Tube PN K3S stainless steel 3/16-inch tubing kit. The company offers a Classic Tube sells aluminum, mild steel, and stainless tubing in larger sizes like this 4-inch tubing. U-bends can be used to build a custom aluminum inlet system downstream of a turbocharger, for example. We also ordered a 20-foot length of 3/8-inch aluminum and stainless tubing to make our own custom performance fuel lines. Classic Tube sells aluminum, mild steel, and stainless tubing in larger sizes like this 4- This is our Rigid 37-degree AN tubing flare tool available through Tool Barn for $102.00. It's an excellent tool that makes special 37-degree flares for aluminum or mild steel tubing, and we've also had success with annealed stainless tubing. Just add the tube nuts and sleeves and you're ready to go. This is our Rigid 37-degree AN tubing flare tool available through Tool Barn for $102.00. Classic Tube Pieces Description PN Source Price 3/8-inch stainless 25-foot tubing kit K6S Classic Tube $68.50 3/8-inch mild steel 25-foot tubing kit K6 Classic Tube $23.50 1/2-inch bulk stainless tubing, 25 feet SS2006 Classic Tube $120.00 3/8-inch bulk stainless tubing, 20 feet SS2005 Classic Tube $84.00 3/8-inch bulk aluminum tubing, 25 feet AL38 Classic Tube $16.80 3/8-inch stainless fuel line, 20 feet C6S Classic Tube $85.99 3/16-inch mild steel 25-foot tubing kit K3 Classic Tube $18.95 3/16-inch stainless 25-foot tubing kit K3S Classic Tube $89.00 9/16x18 SAE fitting, 3/16 inch SS7006 Classic Tube $4.00 3/16-inch stainless 25-foot bulk tube C3 Classic Tube $69.00 1/2x20 SAE fitting, 3/16 inch (SS) SS7004 Classic Tube $3.00 1/2x20 SAE fitting, 3/16 steel ST8008 Classic Tube $0.25 « | 1 | 2 | 3 | 4 | » | View Full Article By Jeff Smith Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!