Product Description
The Heli-Coil 1185-4CN375 by Stanley Engineered Fastening is a high-strength tanged free-running insert designed to establish permanently durable, high-strength internal threads in lightweight parent materials like aluminum, magnesium, and zinc die-castings. Cold-rolled from premium 304 stainless steel wire with a uniform diamond-shaped cross-section, this wire thread insert automatically expands elastically outward upon installation to establish a permanent, spring-like retention force without requiring specialized keying or staking. Yielding a permanently wear-resistant thread, it distributes joint stresses evenly across the assembly to protect against thread stripping, galling, and structural failure.
Free-Running Profile Delivers a clean, conventional internal thread track that allows standard mating bolts and fasteners to turn completely unhindered without added friction or torque resistance.
Tanged Configuration Features a traditional driven installation tang that provides positive mechanical engagement with standard mandrels for controlled and highly accurate depth seating into tapped holes.
High Structural Integrity Compensates for pitch and angle variances within tapped parent metals, dispersing concentrated joint loads evenly to elevate overall assembly fatigue life.
Resilient Wire Construction Utilizes a continuous helically wound diamond profile that handles thermal expansion and contraction elastically while safeguarding against stripping.
Product Specs
- SKU:
- 1185-4CN375
- Thread Size (Inch):
- 1/4-20 (0.250)
- Thread:
- UNC (Coarse)
- Overall Insert Length (Decimal Inch):
- 0.375 in
- Tang:
- Tanged
- Material:
- 304 Stainless Steel
- Number of Free Coils:
- 5 3/4 (5.75)
- Length to Diameter Ratio:
- 1.5D (1.5 x Diameter)
- Coating/Finish:
- Plain (None)
