Fastening Solutions for Climate & Comfort Systems.

Common fastener types include sheet metal screws, blind rivets, self-drilling TEK screws, thread-forming screws, weld studs, clips, spring nuts and vibration-damping hardware. The right product depends on the substrate gauge, joint design, assembly method and operating environment.

Sheet metal screw selection depends on the gauge of the material, the required holding strength, drive style, head profile and whether the application requires a self-drilling or self-piercing point. Thread-forming and thread-cutting variants each offer advantages depending on the substrate and production requirements.

Blind rivets are useful when rear-side access is limited, when a permanent joint is preferred over a removable one, or when vibration resistance and consistent clamp load are important. They can also simplify installation in high-volume production by reducing the number of steps per joint.

Corrosion protection options include zinc plating, zinc-flake coatings, stainless steel, aluminum rivets and other protective finishes. Selection should consider indoor versus outdoor exposure, humidity, condensation, chemical contact and expected service life.

Yes. CSG supports high-volume OEM programs with inventory planning, kitting, custom packaging, forecasting and replenishment strategies designed around production schedules and consumption rates. The goal is to keep the right parts available without excess inventory or line-down risk.

CSG can review an existing bill of materials to identify redundant or overlapping part numbers, recommend standardization opportunities and consolidate sourcing through a single supply partner. SKU reduction can simplify inventory, reduce changeover time and lower total cost.

Helpful information includes part number or drawing, dimensions, material, finish, quantity, annual usage, substrate gauge, application environment and target delivery timing. If you do not have every detail, CSG can start with the information available and help identify what else is needed.

Ductwork is usually joined with self-drilling Tek screws or zip screws with hex washer heads, which drill, tap and fasten in one step. Number 8 and number 10 screws are common for duct gauges, and CSG supplies self-drilling screws from number 8 through number 14 in zinc-plated and stainless steel. Match the drill point and length to the total metal thickness.

A rivet nut is a threaded insert installed from one side of a panel that gives thin sheet metal a strong, reusable thread. HVAC builders use large flange rivet nuts on cabinets, air handlers and access panels that must come off for service, because they do not distort the sheet. CSG supplies hex body and round body rivet nuts in aluminum, steel and stainless steel.

EPDM gaskets are the most common choice for HVAC enclosures because they resist weather, ozone and UV and keep their compression across wide temperature swings. Closed-cell foam gaskets seal access panels, duct flanges and cabinet doors. Pressure-rated O-rings seal refrigerant line connections and valves. CSG supplies all three, plus flange gaskets and gasket sets, for indoor and rooftop equipment.

A2L refrigerants are mildly flammable, so their seals and connections must use compatible materials and be documented for pressure and leak performance. CSG supplies certified seals, pressure-rated O-rings, EPDM seals, gasket sets and locking hose clamps with A2L-compatible materials, packaged as documentation-ready kits for valve packages, condenser units and split system modules. Confirm material compatibility with your refrigerant supplier’s data.

Use stainless steel screws, ideally 316 grade, on air conditioner cabinets near the coast or exposed to salt air. Standard zinc-plated carbon steel rusts quickly there, which weakens clamp force and stains the cabinet. CSG supplies 304 and 316 stainless steel screws, hex bolts, cap screws and lock nuts, plus hot-dip galvanized U-bolts and threaded rod for supports.

Combine locking hardware with isolation. Nylon-insert Nylok nuts hold compressor mounts and fan assemblies, while all-metal lock nuts work better near heat exchangers and exhaust. Split, serrated flange and Belleville washers add resistance, and vibration isolators absorb energy before it reaches the joint. CSG supplies the lock nuts, washers, isolators and anti-vibration mounts as one package.

Refrigerant lines, condensate drains and chilled water pipes are held with U-bolts and pipe clamps, often rubber-cushioned to limit vibration. Suspended ductwork and air handlers hang from threaded rod with beam clamps, clevis hangers, rod couplings and strut fittings. CSG supplies threaded rod from 1/4 inch to 3/4 inch in zinc-plated, hot-dip galvanized and stainless steel.

Route wiring with cable ties, wire clips and P-clamps, and run it through protective grommets wherever it passes a sheet metal edge, so insulation cannot chafe through. Use IP-rated connectors and sealed wire entries on outdoor units to keep out dust and moisture. CSG supplies nylon and stainless steel cable ties, cable clamps, grommets and IP-rated electrical connectors.

Yes. For Trane Technologies, CSG held parts in its own warehouse and released them as needed without upfront payment, consolidated the vendor base and supported value engineering. Production stops from late supply were eliminated and total cost fell by nearly 10 percent. CSG offers the same model through consignment inventory programs.