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Cup Point Slotted Set Screws

Cup point slotted set screws are headless threaded fasteners designed to secure collars, hubs, gears, pulleys, knobs, handles, and other shaft-mounted components. The slotted drive allows installation with a conventional flat-blade screwdriver, while the recessed cup point creates localized rim contact against the mating surface to help secure assembled components.

Cup point geometry is commonly selected where concentrated holding contact is desired between the set screw and the mating shaft or component. Depending on the mating material and installation conditions, the cup point may leave a witness mark or shallow indentation on the contacted surface. Slotted set screws are frequently specified for machinery, maintenance repairs, replacement assemblies, adjustment mechanisms, instrumentation, power transmission components, and equipment where slotted-drive fasteners are preferred or required.

Cold Headers supplies cup point slotted set screws in a broad range of inch thread sizes and lengths, including uncommon and difficult-to-source configurations. Individual product pages provide verified thread size, screw length, nominal diameter, point style, slot dimensions where applicable, and other engineering information to help engineers and purchasing professionals specify the correct fastener.

Why Choose a Cup Point Slotted Set Screw?

  • Cup point geometry: Creates localized rim contact with the mating surface.
  • Slotted drive: Designed for installation using a standard flat-blade screwdriver.
  • Headless construction: Installs flush with or below the surrounding component surface.
  • Industrial applications: Commonly used on collars, hubs, pulleys, gears, knobs, and shaft-mounted components.
  • Verified dimensions: Product pages include thread size, screw length, nominal diameter, and other engineering data where available.

Selecting the Correct Cup Point Slotted Set Screw

Begin by confirming the required thread size and screw length. Review the slot size, available installation access, mating material, required holding action, and acceptable surface marking before selecting a fastener. Cup point slotted set screws should not be substituted automatically for flat point, cone point, oval point, dog point, or knurled cup point designs because each point geometry creates a different contact condition.

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

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

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Unit of Measure
Items slotted-set-screw-alloy.png
6-32 x 1/8 SHLS Cup Point
6-32 x 1/8 Cup Point Slotted Headless Set Screw
List Price (per 100 pieces) $8.90
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6-32 x 3/16 SHLS Cup Point
6-32 x 3/16 Cup Point Slotted Headless Set Screw
List Price (per 100 pieces) $9.05
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6-32 x 1/4 SHLS Cup Point
6-32 x 1/4 Cup Point Slotted Headless Set Screw
List Price (per 100 pieces) $9.35
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6-32 x 5/16 SHLS Cup Point
6-32 x 5/16 Cup Point Slotted Headless Set Screw
List Price (per 100 pieces) $12.00
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6-32 x 3/8 SHLS Cup Point
6-32 x 3/8 Cup Point Slotted Headless Set Screw
List Price (per 100 pieces) $12.30
Description N/A

6-32 x 1/8 Cup Point Slotted Headless Set Screw is a slotted headless set screw for field adjustments where a flat-blade screwdriver is easier to source than a matched hex key. The slot can be driven with common flat-blade tools, avoiding the need to identify and carry a separate key size. The hollow-rim point can bite into the mating surface, so selection should consider whether a witness mark is acceptable.

Typical uses include pulleys and collars on light shafting, replacement knobs, and serviceable handles, where the exact diameter and length help match a tapped hole or service record. A straight slot transmits less seating torque than a hex socket; when maximum tightening torque governs, compare alloy steel socket cup point set screws. Compare Cup Point Alloy Steel Socket Set Screws when socket-drive tightening is preferred. Need these slotted sets in stainless? Ask; non-catalog sourcing is what Cold Headers does.

Cold Headers has supplied specialty fasteners since 1962 and supports hard-to-find slotted set screw sourcing. Selection should reflect the shaft surface, required holding action, access for a flat blade, and the original hardware callout.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 6-32
  • Length: 1/8 in.
  • Material: Carbon Steel
  • Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
  • Head: None (headless, installs below surface)
  • Dimensional Standard: ASME B18.6.2

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

N/A

6-32 x 3/16 Cup Point Slotted Headless Set Screw gives maintenance teams a slotted headless set screw option with a cup point for general shaft and hub holding work. Because the screw has no head, it can thread below the surface of a collar, hub, knob, or housing when the tapped hole permits. The cup point is commonly used where localized holding contact is desired and the mating surface can tolerate set screw marks.

Typical uses include doorknob and lever spindles, latch hardware, small collars, and older mechanical assemblies, where the exact diameter and length help match a tapped hole or service record. Carbon steel should be kept dry and oiled; ask about stainless options when environmental exposure is part of the job. Review Knurled Point Alloy Steel Socket Set Screws when the application calls for a more aggressive vibration-grip point.

Cold Headers helps match exact sizes for legacy hardware, maintenance work, and distributor sourcing requests. When replacing a removed screw, compare thread, length, slot condition, and whether the cup point matches the original intent.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 6-32
  • Length: 3/16 in.
  • Material: Carbon Steel
  • Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
  • Head: None (headless, installs below surface)
  • Dimensional Standard: ASME B18.6.2

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

N/A

6-32 x 1/4 Cup Point Slotted Headless Set Screw uses a straight slot drive so a flat-blade screwdriver can seat the cup point without matching an internal socket size. The straight slot is useful in service kits, older equipment, and awkward access points where a screwdriver reaches more naturally than a key. Standard cup proportions run roughly 0.55 to 0.62 of nominal thread diameter, which is why the exact thread size matters.

This size is relevant for appliance repair, instrument repair, fan hubs, and adjustment points on compact equipment, especially when the slotted drive is already part of the equipment design. For stainless material requirements, review Cup Point 18-8 Stainless Socket Set Screws.

For odd lengths or older slotted hardware callouts, Cold Headers can help identify the closest catalog path. The dimensional reference is ASME B18.6.2, cited here only as the slotted headless set screw dimensional standard.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 6-32
  • Length: 1/4 in.
  • Material: Carbon Steel
  • Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
  • Head: None (headless, installs below surface)
  • Dimensional Standard: ASME B18.6.2

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

N/A

6-32 x 5/16 Cup Point Slotted Headless Set Screw is selected when legacy equipment, blind access, or simple service tooling calls for a slotted headless set screw. The headless form keeps the fastener contained in the tapped component while the screwdriver slot remains the drive interface. The cup point uses a hollow rim for localized contact on the mating shaft or component surface.

This size is relevant for gears in light equipment, fixture stops, bracket retainers, and general maintenance stock, especially when the slotted drive is already part of the equipment design. Square Head Set Screws remain a wrench-driven alternative in this catalog section.

Cold Headers supports exact-size sourcing when a drawing or parts list calls for slotted headless set screw hardware. Check the diameter, length, drive access, mating material, and whether cup-point marking is acceptable before ordering.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 6-32
  • Length: 5/16 in.
  • Material: Carbon Steel
  • Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
  • Head: None (headless, installs below surface)
  • Dimensional Standard: ASME B18.6.2

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

N/A

6-32 x 3/8 Cup Point Slotted Headless Set Screw combines headless installation with a cup point and straight slot for compact retention in light mechanical assemblies. For field service, the slot makes tool matching simple while preserving the compact installation expected from a set screw. Cup point geometry is a general-purpose set screw point for friction holding without requiring a drilled hole or machined flat.

Use this configuration for electrical panel hardware, equipment covers, control handles, and field service replacement work when the job calls for a headless screw and flat-blade drive access. A straight slot transmits less seating torque than a hex socket; when maximum tightening torque governs, compare alloy steel socket cup point set screws.

Use Cold Headers for specialty fastener support when maintenance records call for uncommon cup point slotted sizes. Review the tapped-hole depth, screwdriver clearance, and point contact requirements before replacing a different point style.

Technical Highlights

  • Drive: Straight Slot (flat-blade screwdriver)
  • Point: Cup
  • Thread Size: 6-32
  • Length: 3/8 in.
  • Material: Carbon Steel
  • Cup Point Diameter: approx. 0.55-0.62 x nominal diameter
  • Head: None (headless, installs below surface)
  • Dimensional Standard: ASME B18.6.2

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

Brands N/A Cold Headers, Inc.
Diameter N/A 6-32
Length N/A 1/8 in N/A 3/16 in N/A 1/4 in N/A 5/16 in N/A 3/8 in
Material N/A Carbon Steel
Quantity N/A 100
Package Type N/A Box
Note N/A Less Than Package Quantity Specified Plus 25%.