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USA Lab
3/8" Stainless Steel Bolt - Various Sizes
in Clamps
$3.00
In stockPrice varies by Size.
3/8 in bolt set for high pressure Tri-Clamps in 304 stainless steel with a brass nut and lock washer, to resist galling and hold clamp preload.
Choose Size to continue.
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Generate a formal quotation for 1 × this item, plus our W-9 — everything your finance department needs to raise a purchase order.
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Description
Our 3/8" stainless steel bolt sets are purpose-built for high-pressure Tri-Clamp / Tri-Clover clamps. Each set uses high-quality 304 stainless steel with a brass nut and lock washer to resist galling, maintain clamp preload, and deliver long-lasting, sanitary performance.
Designed for breweries, distilleries, food & beverage, biotech, and pharmaceutical processing, these replacement bolts provide a tight, repeatable seal under pressure while standing up to frequent CIP/SIP and washdowns.
3/8" Bolt Sets 304 Stainless Steel Brass Nut + Lock Washer High-Pressure Tri-Clamp Sanitary Processing
Built for high pressure — Reliable preload for Tri-Clamp connections under demanding conditions.
Anti-galling hardware — 304 SS bolt pairs with a brass nut to reduce thread galling and seizing.
Lock washer included — Helps resist vibration and thermal cycling to keep clamps tight.
Why these bolt sets?
Sanitary & durable — 304 stainless steel resists corrosion and frequent washdowns.
Brass nut + lock washer — Helps prevent galling and loosening during thermal cycling.
Sized for common clamp bodies — Options to fit 1.5" through 12" high-pressure Tri-Clamps.
Easy replacement — Direct swap for worn or seized hardware to restore clamp performance.
Industry ready — Ideal for brewery, distillery, dairy, food, biotech, and pharmaceutical lines.
Not sure which bolt length you need? We’ll help verify fitment for your clamp model and size.
Technical Specifications
Attribute
Details
Product
3/8" Stainless Steel Bolt Set for High-Pressure Tri-Clamps
Bolt Material
304 Stainless Steel
Nut Material
Brass (anti-galling)
Washer
Lock washer included
Bolt Diameter
3/8"
Use With
High-Pressure Tri-Clamp / Tri-Clover style sanitary clamps
Includes
Bolt, brass nut, lock washer (per set)
Bolt Length
Compatible Tri-Clamp Sizes
2 × 1/4"
1.5" / 2" / 3"
2 × 1/2"
4"
3 × 1/4"
6" / 8" / 10" / 12"
Academic & Research Food & Beverage Botanical Extraction Pharmaceutical
We’ll help confirm fitment for your clamps.
FAQ
Will these fit high-pressure Tri-Clamp (Tri-Clover) clamps?
Yes, these bolt sets are designed for high-pressure Tri-Clamp style sanitary clamps. Use the size table above to match bolt length to your clamp size.
Why use a brass nut with a stainless bolt?
Brass helps reduce thread galling against stainless steel, making it easier to tighten and loosen over time, especially with frequent cleanings.
Do these include a lock washer?
Yes. Each set includes a lock washer to help maintain preload under vibration and thermal cycling.
What material is the bolt?
The bolt is 304 stainless steel for corrosion resistance in sanitary processing environments.
Tips to prevent seizing or galling?
Hand-start threads, avoid over-torquing, and consider using a food-grade anti-seize compatible with your process. Clean and dry hardware after washdowns.
We’ll help you confirm the right bolt length and compatibility.
Specifications
MPN:
STBolt
Frequently asked questions
What lengths are available?+
2 1/4 in, 2 1/2 in, 2 5/8 in, 3 1/4 in and 3 3/8 in.
What is in the set?+
A 304 stainless steel bolt, a brass nut and a lock washer.
Why a brass nut and lock washer?+
USA Lab specify the brass nut to reduce thread galling and seizing against the stainless bolt, and the lock washer to resist loosening under vibration and thermal cycling.
What clamp sizes does it suit?+
The manufacturer lists options to fit 1.5 in through 12 in high-pressure Tri-Clamps.
