4-40 x 1/2 Half Dog Point Alloy Steel Socket Set Screw with Nylon Insert gives machine designers a compact locating set screw where a full dog projection is more engagement than the part needs. Compared with a longer full dog projection, the half dog form can work with a shallower receiving hole and thinner surrounding material.

Repair assemblies with thin hub walls can favor the half dog form when a shallower receiving feature is available. Check mating feature, hex access, screw length, and marking tolerance.

Since 1962, Cold Headers has supported industrial buyers where a small difference in set screw point geometry changes the fit. Review insert dimensions, hex key size, and ASME B18.3 before ordering this alloy steel socket set screw.

Technical Highlights

• Point: Half Dog (short cylindrical locating stub)
• 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): 9/64 in., +/- 1/2 pitch
• Dimensional Standard: ASME B18.3

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