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Home > Manufacturers > TSI
 
TSI
Totally Stainless Logo
TSI is a full line of low strength and high strength stainless steel fasteners. The product line includes all sizes and lengths of US and Metric bolts, nuts, screws, cotter pins and many other stainless steel fasteners. The line also includes complete engine specific bolt kits and vehicle specific body kits.
ABOUT STAINLESS STEEL: Stainless is a series of alloy steels which contain at least 12% chromium. Such steels will not rust when exposed to the weather. All of our products, with the exception of our larger high strength bolts and internal/external tooth lock washers, are made from various 300 series stainless steels which contain at least 18% chromium and 8% nickel. Prior to forming 300 series stainless is non-magnetic, however the forming process can induce some magnetism into the part. Some of our smaller high strength fasteners are made from highly compressed 304 stainless and as a result show the highest degree of magnetism. The metric designation for 304 is A-2. Even more corrosion resistant alloys, such as 316 (metric A-4), are available for some of our product line and are a good choice for marine use. Our larger sizes of high strength stainless are made from either 16-6 age hardening stainless of 17-4 precipitation hardening stainless. Both of the high strength alloys approach the 300 series stainless for corrosion resistance but have four times the yield strength (the point at which the bolt will start to bend). Because stainless steel is fairly soft (it only seems harder because it work-hardens) it tends to gall. ALWAYS USE ANTI-SEIZE ON THE THREADS!
STAINLESS VS. CHROME PLATING: Stainless steel is superior to chrome plating because it won’t crack or peel as it isn’t a surface coating but the very substance from which the fastener is made! Decorative chrome plating should never be used on graded steel fasteners due to hydrogen embrittlement. Small hydrogen bubbles form within high carbon steel fasteners during electroplating. When a thin industrial coating is used, the bubbles can be baked out. With the thicker decorative chrome plating, the bubbles can’t be baked out! The uniform fastener act requires the mechanical and chemical properties of all graded fasteners to be fully tested after electroplating. If you use chrome plated graded fasteners, make sure you get copies of the certification!
ABOUT YOUR SAFETY: We offer a unique line of ‘GRADE 8’ strength stainless for high strength applications; note regular stainless steel fasteners are only slightly stronger than GRADE 2! Unless you have a death wish, DON’T BOLT YOUR BRAKE SYSTEM OR SUSPENSION TOGETHER WITH REGULAR STRENGTH STAINLESS STEEL FASTENERS!!! Regular strength stainless is great for a variety of automotive applications, but use some common sense. Always follow the application guidelines of the original manufacturer and refer to published torque tables.  Even if your vehicle is a show-only “trailer queen”, some day someone will drive it on the street, so DO IT RIGHT THE FIRST TIME!
 
 
Accessory Spacer Washers
Acorn Nuts
Acorn Nuts - High Crown
Acorn Nuts DIN #1587
Bed Mount Washers for Chevy Trucks
Cap Screws
Carriage Bolt
Cotter Pin
Countersunk External Tooth Lock Washers - Standard
Countersunk Flat Washers
Double Line Clamps
Engine Bolt Kits
Exhaust Clamps
External Tooth Lock Washer - Standard Finish
Finishing (Cup) Washers
Flanged (Cup) Washers
Flat Head Sheet Metal Screw
Full Hex Nuts
Full Hex Nuts DIN #934
Grease Fittings
Hairpin Clips
Hairpin Cotter Pins
Heavy Hex Nuts
Heavy Jam Nuts
Heavy Nylon Insert Lock Nuts
Hex Head Pipe Plugs
Hex Socket Pipe Plugs
High Collar Lock Washers - Standard Finish
Internal Tooth Lock Washers - Standard Finish
Jam Nuts
Kep Nuts
Lag Bolts
Machine Screws
Metric
Neoprene Backed Washers
Nylon Insert Lock Nuts DIN #985
Nylon Insert Nuts
Polished Hose Clamps
Serrated Flange Nuts
Sheet Metal Screws
Single Line Clamps
Snap Fasteners
Socket Set Screw
Split Metric Lock Washers
Square Head Pipe Plugs
Standard Finish Hose Clamps
Standard Split Lock Washers
Tall High Strength 70,000 psi Nuts for U-Bolts
Thin Nylon Insert Nuts
Threaded and Unthreaded Stainless Steel Rods
U.S. Square Nuts
U-Bolts 17-4 PH HS
Undersized Head Trim Head SM Screw
Vibration Proof 316 Stainess Lock Washers
Washers
Wing Nuts
 

TSI Logo

 
We have access to over $60 Million of inventory in 16 distribution centers nationwide to fill your orders from on a daily basis. Our site currently has over 350,000 items and more than twice that many yet to be added. Our product offering could be divided into several major categories. Parts for; drag racing, circle track racing, road racing, off road racing, street/strip, show vehicles, strictly street vehicles, trucks & SUVS, general repair and maintenance.
You may find that there are some product lines that you will not find on our site or that we refuse to sell. We are committed to selling only the best quality merchandise from the most respected manufacturers in the industry. If we are not willing to use a product ourselves, we will not sell it.
This is especially critical when it comes to racing internal engine components such as complete rotating assemblies, crankshafts and connecting rods. We have seen too many of our fellow racers be victims of this cheap offshore junk and we will not contribute to the problem. Please do not ask us to.