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Small metal locknut with threaded bore and set screw

Ruland Manufacturing

Ruland Manufacturing TCN-04-F Shaft Collar Locknut 0.781-32 In collectible

SKU CH-8C0Y-1EVA7

Precision shaft collar locknut with 0.781-32 inch threads and corrosion-resistant carbon steel construction

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Precision fit with 0.0005 in TIR
  • Secure hold via 0.781-32 thread spec
  • Durable carbon steel Grade 1215 construction
  • Operates from -40 to 350 Degrees F
  • Corrosion resistant for extended service life

Precision Shaft Locknut for Power Transmission

This new Ruland TCN-04-F shaft collar locknut is built for inch-system power-transmission assemblies that require a 0.781-32 thread. It suits maintenance engineers and machine builders who need a standard N04 industry-size locking component rated from -40 to 350 degrees F.

Carbon-Steel Construction with Alloy-Steel Setscrew

The nut body uses Grade 1215 carbon steel for corrosion resistance, while the locking screw is alloy steel positioned 0.57 in from centre. A 1 5/8 in outside diameter and 7/16 in width provide the bearing face, held to a maximum TIR of 0.0005 in for accurate alignment.

Straightforward Thread-On Installation

The locknut installs by threading onto the 0.781-32 shaft and securing the integral setscrew against the shaft surface. Ensure the shaft threads are clean and undamaged; cross-threading or over-torquing the setscrew can mar the shaft and reduce holding power.

How it compares

Measured against everything we stock in Fan Collectibles & Memorabilia, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 87% of the 1,367 comparable items (median $26.99).

Specifications

Product
Brand nameRULAND
Product typeBearings, V-belts & Power Transmission Equipment
Product colorTransparent

Questions about this item

Will the set-screw on this TCN-04-F locknut need periodic retightening?

The alloy-steel set-screw is positioned 0.57 in from centre; check torque after initial run-in and at routine maintenance intervals.

What is the first limit reached when the collar runs continuously at high speed?

Maximum operating temperature is 350 °F; exceeding this degrades the carbon-steel nut and bearing-face tolerance of 0.0005 in.

How much heat does the collar generate during all-day operation?

The steel body conducts heat from the shaft; at sustained loads it will approach the 350 °F ceiling, so monitor housing temperature.

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