Cone Point Alloy Steel Socket Set Screws with Nylon Insert

Cone point alloy steel socket set screws with nylon insert combine the precise locating characteristics of a cone point set screw with a factory-installed nylon locking element that provides prevailing torque during installation. The sharply tapered cone point is designed to engage a mating recess or create concentrated point contact, while the nylon insert helps increase resistance to thread loosening caused by vibration, repeated movement, and dynamic loading. The internal hex drive allows installation where external wrench clearance is limited.

Manufactured from alloy steel, these socket set screws are intended for demanding industrial mechanical applications requiring accurate positioning and dependable fastening performance. They are commonly used to secure collars, hubs, gears, pulleys, couplings, sprockets, adjustment mechanisms, fixtures, and other shaft-mounted components in machinery, automation equipment, power transmission systems, industrial tooling, maintenance repairs, and OEM assemblies.

Cone point geometry is frequently selected where positive positioning or concentrated point contact is required. Depending on the mating material and installation conditions, the cone point may produce a visible indentation in the contacted surface. Proper fastener selection should consider thread size, screw length, hex socket size, mating material, installation access, acceptable surface marking, and the desired level of prevailing torque. The nylon insert provides prevailing torque but should not be considered a substitute for proper joint design or installation practices.

Cold Headers supplies cone point alloy steel socket set screws with nylon insert 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, hex socket size, cone point dimensions, and additional engineering information where available to support accurate specification.

Why Choose Cone Point Alloy Steel Socket Set Screws with Nylon Insert?

  • Factory-installed nylon insert: Provides prevailing torque to help resist thread loosening.
  • Cone point geometry: Designed for concentrated point contact or engagement with a mating recess.
  • Alloy steel construction: Intended for demanding industrial mechanical applications.
  • Internal hex drive: Allows installation where external wrench clearance is limited.
  • Verified engineering dimensions: Product pages provide thread size, length, nominal diameter, hex socket size, and cone point dimensions where available.

Selecting the Correct Cone Point Socket Set Screw

Begin by confirming the required thread size and screw length. Review the hex socket size, mating material, installation clearance, operating environment, acceptable surface marking, and assembly requirements before selecting a fastener. Final selection should reflect the mechanical requirements of the completed assembly. Cone point socket set screws should not be substituted automatically for cup point, knurled cup point, flat point, oval point, half dog point, or full dog point designs because each point geometry serves a different mechanical purpose.

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

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

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4-40 x 1/4 Cone Point Alloy Steel Socket Set Screw with Nylon Insert
List Price (per 100 pieces) $86.00
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4-40 x 5/16 Cone Point Alloy Steel Socket Set Screw with Nylon Insert
List Price (per 100 pieces) Call or Email for Pricing
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4-40 x 3/8 Cone Point Alloy Steel Socket Set Screw with Nylon Insert
List Price (per 100 pieces) Call or Email for Pricing
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4-40 x 7/16 Cone Point Alloy Steel Socket Set Screw with Nylon Insert
List Price (per 100 pieces) Call or Email for Pricing
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4-40 x 1/2 Cone Point Alloy Steel Socket Set Screw with Nylon Insert
List Price (per 100 pieces) Call or Email for Pricing
Description N/A

4-40 x 1/4 Cone Point Alloy Steel Socket Set Screw with Nylon Insert is a heat-treated alloy steel cone point socket set screw with a nylon insert for thread drag after seating. This double-action layout combines point seating at the shaft with prevailing torque inside the threaded hole. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.

Cam plates and eccentric adjustments may specify cone point hardware where the final position must remain indexed. For a general-purpose point with a broader size range, review Cup Point Alloy Set Screws with Nylon Insert.

Cold Headers installs nylon locking pellets in-house at its Chicago facility for this cone point set screw family. Cold Headers supports exact-size and hard-to-find cone point nylon-insert sourcing for industrial repair, replacement, and production requirements. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw.

Technical Highlights

  • Point: Cone (tapered conical point)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 1/4 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 1/8 in., ±1/2 pitch
  • Dimensional Standard: ASME B18.3

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

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4-40 x 5/16 Cone Point Alloy Steel Socket Set Screw with Nylon Insert is specified where a tapered conical point should nest into a prepared shaft spot while the nylon insert adds prevailing torque. For best seating, a shallow drilled dimple can help the point center consistently in the intended position. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.

OEM assemblies with spotted shafts use cone points to separate the locating function from ordinary clamp screws.

Cold Headers helps industrial buyers keep the point style, drive type, and locking feature aligned with the drawing requirement. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw. The internal hex recess also keeps installation access compact when the screw is recessed in a hub or collar.

Technical Highlights

  • Point: Cone (tapered conical point)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 5/16 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 1/8 in., ±1/2 pitch
  • Dimensional Standard: ASME B18.3

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

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4-40 x 3/8 Cone Point Alloy Steel Socket Set Screw with Nylon Insert pairs cone-point shaft engagement with a nylon locking pellet in a compact internal-hex set screw. The cone point is selected for mechanical interlock because the tapered tip seats into a spot or dimple instead of only pressing on the surface. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.

Maintenance repairs often need the exact thread, length, point style, and locking insert that match the service record. Plain alloy steel is not selected for corrosion resistance, so keep parts oiled or choose a stainless request when the environment requires it.

When a bill of material calls out cone point alloy hardware with a nylon insert, Cold Headers keeps the catalog path specific. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw.

Technical Highlights

  • Point: Cone (tapered conical point)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 3/8 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 1/8 in., ±1/2 pitch
  • Dimensional Standard: ASME B18.3

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

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4-40 x 7/16 Cone Point Alloy Steel Socket Set Screw with Nylon Insert is designed for headless fastening locations that need a pointed seat and added thread friction. A spotted shaft gives the point a defined pocket, so the set screw can locate more positively during installation. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.

Replacement assemblies with dimpled shafts can keep the original point style while adding a nylon insert for thread friction.

In-house pellet installation helps Cold Headers support nylon-insert requirements that are easy to confuse with plain cone point screws. Cold Headers supports distributor, OEM, and MRO sourcing when the item has to be defined by size, point, material, drive, and insert. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw.

Technical Highlights

  • Point: Cone (tapered conical point)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 7/16 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 1/8 in., ±1/2 pitch
  • Dimensional Standard: ASME B18.3

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

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4-40 x 1/2 Cone Point Alloy Steel Socket Set Screw with Nylon Insert gives engineers a cone point for mechanical interlock and a nylon insert for resistance in the mating thread. This double-action layout combines point seating at the shaft with prevailing torque inside the threaded hole. Use this alloy steel body with the nylon locking pellet where the drawing calls for a mechanical set screw, not a corrosion-focused stainless part.

Industrial repair work sometimes calls for cone point nylon-insert screws when removal access is from the socket end only. Where shaft marking must be minimized, Flat Point Alloy Set Screws with Nylon Insert are the more appropriate comparison.

Cold Headers has worked with specialty socket fasteners since 1962 and supports exact thread-and-length identification for repair and production work. Review thread size, length, hex key size, point style, and mating-surface marking tolerance before replacing it with another set screw.

Technical Highlights

  • Point: Cone (tapered conical point)
  • Material: Alloy Steel
  • Thread Size: 4-40
  • Length: 1/2 in.
  • Drive: Internal Hex
  • Hex Key Size: 0.050 in.
  • Locking Feature: Nylon insert providing prevailing torque
  • Nylon Insert Diameter (P): 1/16 in.
  • Nylon Insert Location (N): 1/8 in., ±1/2 pitch
  • Dimensional Standard: ASME B18.3

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Brands N/A Cold Headers, Inc.
Diameter N/A 4-40
Length N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 7/16 in N/A 1/2 in
Material N/A Nylon
Quantity N/A 100
Package Type N/A Box
Note N/A Less Than Package Quantity Specified Plus 25%.