Products

Get unique, complex parts easily. No matter your requirements, Master Spring creates hard-to-produce coil springs and wire forms.

Custom Wire Forms

Let us help you create the custom wire form you need, from S-hooks and J-hooks to utility hooks and more.

Industries

We work closely with customers across a wide range of industries, helping them design and manufacture made-to-order parts.

Master Spring Advantage

Why choose Master Spring? We prioritize customer-focused collaboration, modern equipment and the latest technology to make your parts per print.

Expert Supplier of Wire Forms and Springs for the Hardware and Fasteners Industry

With over 75 years of manufacturing experience, Master Spring is a proven U.S. supplier of wire forms and coil springs for the hardware and fasteners industry.

Made-to-Order Wire Forms and Coil Springs for Hardware and Fastener Applications

We manufacture farming planter springs, gas spout springs, ball plunger springs, POP flip-sign springs, toilet flush handle springs, medical device lock springs, fusible link hooks, sewage pump handles, cash drawer springs, laundry basket truck springs and chill coils.

Galvanized steel link hook

Link Hook

Part Names: Galvanized steel link hook, fusible link hook, wire hook

Industry: Hardware and fasteners: Fire protection equipment

Application: The wire hook is a fusible link component used in mainstream range hood fire protection systems for both domestic and commercial applications.

Material: 0.148” galvanized cold-rolled basic wire

Special Features: Eyelet has a small coil index (ratio of mean coil diameter to wire diameter). Eyelet must maintain full radius near cutoff with a gap.

Stainless steel wire handle

Pump Handle

Part Names: Stainless steel handle, wire handle, sewage pump handle, sump pump handle

Industry: Hardware and Fasteners; Residential Pumps

Application: The handle is attached to a submersible sewage pump used in residential applications. We also make smaller handles for sump pumps.

Material: 0.250” stainless steel 302 wire

Special Features: Packed 250 pieces per box

Stainless steel compression spring,

Spout Spring

Part Names: Stainless steel compression spring, stainless CENG compression spring, flow control button spring

Industry: Hardware and fasteners: Portable plastic fuel containers

Application: Flow control button for pouring gas

Material: 0.059” stainless steel 302 wire

Special Features: Closed ends and not ground

Stainless steel torsion spring

Flush Handle Spring

Part Names: Stainless steel torsion spring, toilet handle spring

Industry: Hardware and fasteners: Toilet trim products

Application: Torsion spring returns toilet flush handle to starting position

Material: 0.050” type 302 stainless steel wire

Special Features: Inspection report is sent with every shipment and minimum inventory quantity is maintained for immediate release

Large double torsion spring

Coulter Double Torsion Spring

Part Names: Large double torsion spring, farming planter torsion spring

Industry: Hardware and fasteners: Agriculture planter products

Application: Double torsion spring applies force to the coulter in a nitrogen application system for a planter

Material: 0.192” phos music wire

Special Features: Magni-565-coated for corrosion protection

Stainless steel extension spring

Drain Pan Extension Spring

Part Names: Stainless steel extension spring, extended hook extension spring

Industry: Hardware and fasteners: Employee safety equipment

Application: Used in an eye/face wash and shower safety station; spring keeps recessed drain pan closed in a vertical position

Material: : 0.067” type 302 stainless steel wire

Special Features: : Springs are passivated; center rectangular hook with 11/64” gap on one side; other end has a center extended hook with eyelet that is in-line with other side

Medical device lock spring

Lock Spring

Part Names: Medical device lock spring, needle cartridge spring, stainless steel lock spring

Industry: Hardware and fasteners: Micro needling device used in dermatology

Application: Lock spring is used to lock sterile needle cartridge to handpiece base

Material: 0.020” stainless steel 302 wire

Special Features: Packed 1,000 parts per labeled, double bag

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Sand mold cooling coil

Chill Coil

Part Names: Sand mold cooling coil, casting chill coil

Industry: Hardware and fasteners: Metal casting

Applicatoin: The cooling coil or chill coil is placed in the sand mold to produce local chilling and equalize the rate of solidification throughout the casting

Material: 0.162” C1008 bright basic wire

Special Features: Copper coated

Stainless steel ball plunger spring

Ball Plunger Spring

Part Names: Stainless steel ball plunger spring, CENG compression spring

Industry: Hardware and fasteners: Ball and spring plungers and hand retractable spring plungers

Application: The compression spring is enclosed in a threaded capsule and provides accurate and repeatable spring end forces through a ball or rounded nose

Material: 0.028” stainless steel 302 wire

Special Features: Closed ends and not ground (CENG); set removed (i.e., the spring’s free length decreases after deflecting to solid height)

Stainless steel double torsion spring

Coupling Double Torsion Spring

Part Names: Stainless steel double torsion spring, snowplow torsion spring

Industry: Hardware and fasteners: Professional snowplow and ice removal equipment

Application: Double torsion spring is used in lock-pin coupling system for attaching a snowplow to a truck

Material: 0.093” type 302 stainless steel wire

Special Features: There is a long amount of wire between the two bodies of coils that includes two wraps of square coils in the center

pre-galvanized torsion spring,

Flip-sign Torsion Spring

Part Names: Hinge spring, pre-galvanized torsion spring, LH-wound torsion spring

Industry: Hardware and fasteners: Point-of-purchase displays

Application: Torsion spring is used in a flip-up header LED sign in POP displays

Material: 0.057” pre-plated galvanized music wire

Special Features: Torsion spring is left-hand wound

Laundry basket extension spring

Basket Truck Lift Spring

Part Names: Laundry basket extension spring, large extension spring, side-loop extension spring

Industry: Hardware and fasteners: Laundry and housekeeping basket trucks

Application: Extension springs lift bottom of laundry basket truck as load gets lighter

Material: 0.120” galvanized hard-drawn MB spring wire

Special Features: 45-degree side loops; each loop is two coils and loops are in-line; oval ring is assembled to one loop

Inspection Display Stand Wire Form

Inspection Display Stand

Part Names: Aluminum wire stand, portable display stand

Industry: Hardware and fasteners: Portable ultrasonic flaw detectors for locating and sizing of hidden cracks, voids, disbands, and similar discontinuities in welds, forgings, turbines and other structural components

Applicatoin: Aluminum wire form stand provides convenient, lightweight support to keep portable inspection display upright

Material: 0.250” aluminum wire 6061 T6

Special Features: Chamfer ends, mill flat ends, drill hole in each end and tap, chromate conversion coat, and black plastisol dip coat

Aluminum wire handle

Wire Loop Handle

Part Names: Aluminum wire handle, wire loop strap fastener

Industry: Hardware and fasteners

Applicatoin: Wire loop handle used as a belt or strap fastener

Material: 0.125” aluminum ¼ hard wire

Special Features: Tumble or vibratory deburr to remove sharp edges

conical rebar

Spiral Reinforcement

Part Names: Coiled rebar, conical rebar, concrete spiral reinforcement

Industry: Hardware and fasteners: Railroad track systems

Application: Acts as rebar in railroad concrete sleepers

Material: 0.236” cold-rolled C1008 bright basic wire

Special Features: Coils must be concentric and must screw onto mating part

Large double torsion spring

Seed Tube Retention Spring

Part Names: Large double torsion spring, stainless steel torsion spring, seed tube fastener spring

Industry: Hardware and fasteners: Agriculture planter equipment

Application: Double torsion spring fastens seed tube delivery system to planter row unit

Material: 0.162” type 302 stainless steel wire

Special Features: Large double torsion spring has many bends on both legs

Stainless steel clips

Hairpin Spring Clip

Part Names: Stainless steel clips, ammunition container clips, torsion spring clips

Industry: Hardware and fasteners: Ammunition containers

Applicatoin: Hairpin spring clip keeps ammunition container closed

Material: 0.090” type 302 stainless steel wire

Special Features: Material certificate and Certificate of Compliance are sent with every shipment; finish is to remain dull

Cash drawer extension spring

Currency Hold-down Extension Spring

Part Names: Cash drawer extension spring, cash register extension spring, side-loop extension spring

Industry: Hardware and fasteners: Point-of-sale (POS) heavy-duty cash drawer

Application: Extension springs provide tension on currency hold downs in heavy-duty till

Material: 0.020” galvanized music wire

Special Features: Full side loops in-line

Chrome silicon compression spring

Metal Insert

Part Names: Chrome silicon compression spring, CEG compression spring, metal insert for tube seal

Industry: Hardware and fasteners: Tube seals used in automotive transmissions

Application: Over molding a rigid insert (compression spring) adds stability to automotive transmission tube seal and prevents buckling

Material: 0.038” chrome silicon wire

Special Features: Three-coil closed ends and ground; zinc phosphate coating; packed 10,000 pieces per bag in a box

barrel-shaped compression spring

Barrel Compression Spring

Part Names: Plunger spring, barrel-shaped compression spring

Industry: Hardware and fasteners: Pinball games

Application: Used on plunger assembly

Material: 0.062” phos music wire

Special Features: Bright nickel rack plate

vacuum hose clamp spring

Vacuum Hose Spring Clamp

Part Names: Clamp spring, torsion spring, vacuum hose clamp spring

Industry: Hardware and fasteners: Dust control systems for automotive, aerospace and industrial applications

Application: Spring clamp mount for holding flex-loc vacuum hose fixed in place

Material: 0.125” hard-drawn bright wire

Special Features: Bright chrome plate

Torsion spring pin assembly

Spring Pin Clip

Part Names: Torsion spring pin assembly, farming planter spring pin clip

Industry: Hardware and fasteners: Agriculture planter equipment

Application: Spring pin assembly fastens the seed tube to the planter

Material: 0.051” zinc pre-plated music wire

Special Features: Torsion springs are assembled with pins and packed four assemblies per heat sealed and labeled bag

Active-coil Helical Extension Spring

Part Names: Trampoline spring, physical therapy rebounder spring, extension spring

Industry: Hardware and fasteners: Physical therapy products

Application: Extension springs return the trampoline mat to starting position in plyometric rebounder

Material: 0.138” phosphate-coated music wire

Special Features: Center hooks in line; gap is 3/8” to 7/16”; finish is zinc trivalent with bake

Seed meter spring

Seed-meter Singulator Spring

Part Names: Seed meter spring, stainless steel torsion spring, seed meter torsion spring

Industry: Hardware and fasteners: Agriculture seed meters

Application: Torsion spring rides on the edge of a meter disk and knocks off extra seeds so only one seed is planted at a time

Material: 0.036” type 302 stainless steel wire

Special Features: Torsion springs are layer packed to minimize tangling during shipping

artisan clothespin spring

Stainless Steel Clothespin Spring

Part Names: Stainless steel torsion spring, artisan clothespin spring

Industry: Hardware and fasteners: Artisan clothespins

Application: Torsion spring applies the strong gripping force in American-made artisan clothespins

Material: 0.062” type 302 stainless steel wire

Special Features: Torsion springs are passivated to remove contaminants and improve corrosion resistance

Snowplow extension spring

Extension Spring, .375” OD x 2.5” Long

Part Names: Snowplow extension spring, center-loop extension spring, stainless steel extension spring

Industry: Hardware and fasteners: Professional snowplow and ice removal equipment

Applicatoin: Provides tension on a coupler stop pin on snowplow equipment

Material: 0.049” type 302 stainless steel wire

Special Features: Center loops in line +/- 30 degrees; fully closed loops

Stainless steel clutch spring

Clutch Garter Spring

Part Names: Stainless steel clutch spring, fun-kart clutch spring, small index extension spring

Industry: Hardware and fasteners: Fun-kart and four-cycle racing karts

Application: Extension spring works as a garter spring in an automatic centrifugal clutch on a fun kart

Material: 0.057” type 302 stainless steel wire

Special Features: Extremely small spring index (ratio of mean coil diameter to wire diameter); machine loops (same as German hooks or twist loops); one loop is closed; second loop has a gap

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Master Spring Advantage

Customers select Master Spring to produce parts that are difficult to form, finish or package. We do what other manufacturers can’t.

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Need a custom wire form or coil spring? We make it work. Fill out the contact form and a representative will respond within 1 business day. If you have a PDF or CAD file, you can submit to request a quote.

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Your Team For Innovative Wire Forming

We provide solutions for complex, high-quality
wire forms and coil springs.

1340 Ardmore Ave. Itasca, IL 60143

P: 708.202.9545| F: 708.453.6420|Contact Us