Hi-Collar Helical Spring Lock Washers

Hi-Collar helical spring lock washers are split lock washers featuring a taller collar profile that provides increased bearing height compared to conventional helical spring lock washers. The helical design applies spring tension as the fastener is tightened, while the raised collar helps distribute clamping force beneath the fastener head or nut. These washers are commonly used with hex head cap screws, socket head cap screws, machine screws, studs, and other externally threaded fasteners in industrial assemblies.

Hi-Collar helical spring lock washers are widely specified for machinery, automation equipment, pumps, motors, conveyors, power transmission equipment, agricultural equipment, maintenance repairs, industrial enclosures, OEM manufacturing, and general mechanical assemblies. Their compact design makes them suitable for a broad range of fastening applications where a spring lock washer is specified as part of the assembly.

Proper washer selection should consider the fastener size, mating materials, available bearing surface, installation requirements, and overall joint design. Individual product pages provide verified inside diameter, outside diameter, thickness, and applicable screw size where available to assist engineers and purchasing professionals in selecting the correct washer.

Cold Headers supplies Hi-Collar helical spring lock washers in a broad range of inch sizes, including standard and difficult-to-source configurations. Our catalog helps engineers, distributors, maintenance teams, and purchasing professionals quickly locate the exact industrial washer required for demanding applications.

Why Choose Hi-Collar Helical Spring Lock Washers?

  • Raised collar profile: Provides greater bearing height than conventional helical spring lock washers.
  • Helical spring design: Commonly specified for industrial bolted assemblies.
  • Wide fastener compatibility: Used with socket head cap screws, hex head cap screws, machine screws, studs, and nuts.
  • Industrial applications: Frequently used in machinery, equipment, maintenance, and OEM manufacturing.
  • Verified dimensions: Product pages provide applicable fastener size and dimensional information where available.

Selecting the Correct Hi-Collar Lock Washer

Begin by confirming the required fastener size and matching washer dimensions. Review the inside diameter, outside diameter, thickness, available bearing surface, mating materials, and assembly requirements before selecting a washer. Final selection should reflect the mechanical design and service conditions of the completed assembly.

Cold Headers Inc. has supplied specialty industrial fasteners since 1962. Our catalog helps engineers, distributors, maintenance teams, and purchasing professionals locate exact sizes and difficult-to-find industrial fastening products without unsupported inventory claims.

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

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#4 Hi-Collar Helical Spring Lock Washer
List Price (per 100 pieces) $1.50
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#5 Hi-Collar Helical Spring Lock Washer
List Price (per 100 pieces) $1.75
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#6 Hi-Collar Helical Spring Lock Washer
List Price (per 100 pieces) $2.00
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#8 Hi-Collar Helical Spring Lock Washer
List Price (per 100 pieces) $2.25
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#10 Hi-Collar Helical Spring Lock Washer
List Price (per 100 pieces) $2.50
Description N/A

#4 Hi-Collar Helical Spring Lock Washer is sized to pair with the matching socket head cap screw where a regular split lock washer will not fit the counterbore. The split helical ring compresses as the screw seats, keeping spring take-up under the head and helping resist loosening under vibration. Pairs with our 1960 Series Alloy Steel Socket Head Cap Screws in the same nominal size.

Typical applications include machine assemblies with socket screws, compact counterbored joints, and repair kits, where washer clearance under the socket head is part of the design. Plain carbon steel should be kept dry and oiled; ask about stainless washers as a non-catalog item when exposure matters. Compare Alloy Steel Socket Head Cap Screws when building a complete inch socket-screw order.

Cold Headers has supplied specialty socket fasteners since 1962 and supports exact-size washer and cap screw sourcing. Before ordering, compare the print callout to the nominal washer size and the matching socket head cap screw.

Technical Highlights

  • Nominal Size: #4 (matches screw size)
  • Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
  • Type: Helical Spring Lock Washer
  • Fits: Socket head cap screw counterbores
  • Material: Carbon Steel
  • Dimensional Standard: ASME B18.21.1

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

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#5 Hi-Collar Helical Spring Lock Washer is a hi-collar helical spring lock washer for socket head cap screw counterbores and compact recessed joints. The taller section and smaller outside diameter distinguish it from a standard split washer while maintaining spring action under the cap screw head. Order it with the matching socket head cap screws so the screw and washer sizes stay aligned.

Typical applications include die and fixture builds, jig plates, toolroom repairs, and guided machine details, where washer clearance under the socket head is part of the design. For a locking approach built into the screw itself, compare 1960 Series Alloy SHCS with Nylon Insert. Review 18-8 Stainless Socket Head Cap Screws when the screw material requirement changes.

Cold Headers helps maintenance teams and distributors match the small companion parts that keep socket screw orders complete. Review the cap screw size, counterbore diameter, joint stack-up, and washer style before substituting a standard split washer.

Technical Highlights

  • Nominal Size: #5 (matches screw size)
  • Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
  • Type: Helical Spring Lock Washer
  • Fits: Socket head cap screw counterbores
  • Material: Carbon Steel
  • Dimensional Standard: ASME B18.21.1

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

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#6 Hi-Collar Helical Spring Lock Washer gives a socket screw assembly a reduced-OD lock washer made for the space under a socket head cap screw. Its helical form adds resistance to loosening while preserving the counterbore fit expected in socket head cap screw assemblies. Pair this socket head cap screw washer with orders where the counterbore controls washer clearance.

Use this style for equipment with counterbored joints, recessed cap screws, and limited washer clearance when a standard split lock washer has too much outside diameter for the counterbore. Nylon insert socket cap screws provide a different locking approach, with the pellet in the thread instead of spring action under the head.

For hard-to-find socket screw accessories, Cold Headers can help line up the washer size with the matching cap screw requirement. The nominal size matches the screw size; do not size this washer from a broad outside-diameter assumption.

Technical Highlights

  • Nominal Size: #6 (matches screw size)
  • Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
  • Type: Helical Spring Lock Washer
  • Fits: Socket head cap screw counterbores
  • Material: Carbon Steel
  • Dimensional Standard: ASME B18.21.1

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

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#8 Hi-Collar Helical Spring Lock Washer is proportioned for counterbored socket screw joints where washer outside diameter and section height both matter. The washer is not a substitute for joint design review, but it is the washer style commonly paired with recessed socket head cap screws. Use it alongside 1960 Series Socket Head Cap Screws when the drawing calls for a hi-collar washer.

Use this style for maintenance kits, screw-and-washer kitting, replacement hardware, and shop service bins when a standard split lock washer has too much outside diameter for the counterbore.

Cold Headers supports OEM, repair, and toolroom sourcing where washer style and nominal size both need to match the print. Confirm the nominal screw size, counterbore clearance, material, package quantity, and whether a hi-collar washer is specified.

Technical Highlights

  • Nominal Size: #8 (matches screw size)
  • Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
  • Type: Helical Spring Lock Washer
  • Fits: Socket head cap screw counterbores
  • Material: Carbon Steel
  • Dimensional Standard: ASME B18.21.1

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.

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#10 Hi-Collar Helical Spring Lock Washer supports socket head cap screw installations that need spring take-up inside the counterbore. The split helical ring compresses as the screw seats, keeping spring take-up under the head and helping resist loosening under vibration. A #10 hi-collar washer pairs with a #10 socket head cap screw by nominal size.

It is useful in panel and guard mounting, bracket retention, access covers, and machine enclosures, with the helical ring compressing as the cap screw seats. Plain carbon steel should be kept dry and oiled; ask about stainless washers as a non-catalog item when exposure matters. Compare Alloy Steel Socket Head Cap Screws when building a complete inch socket-screw order.

Use Cold Headers when a drawing calls for the washer that fits inside a socket head cap screw counterbore. Match the washer by nominal screw size, then verify the assembly has the counterbore geometry intended for this style.

Technical Highlights

  • Nominal Size: #10 (matches screw size)
  • Style: Hi-Collar (reduced OD, increased section vs. standard split washer)
  • Type: Helical Spring Lock Washer
  • Fits: Socket head cap screw counterbores
  • Material: Carbon Steel
  • Dimensional Standard: ASME B18.21.1

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Brands N/A Cold Headers, Inc.
Nominal Size N/A No. 4 N/A No. 5 N/A No. 6 N/A No. 8 N/A No. 10
Material N/A Carbon Steel
Package Type N/A Bulk
Quantity N/A 100