C.E. Smith 13515
Galvanized hub kit · 5 on 4½ in bolt circle
Pre-greased hub with bearings, dust cap, cotter pin and lug nuts
See this exact partC.E. Smith Trailer Hub Hardware: Dust Caps, Protectors & Lugs
Maintaining a boat or utility trailer hub starts with knowing which part you are replacing. C.E. Smith's complete hub kit, plain dust caps, pressure-assisted bearing protectors and wheel fasteners have different jobs. This guide compares the exact catalog parts without assuming they all belong on the same axle.
Three different jobs around the wheel
Complete hub replacementThe galvanized 13515 hub kit is for a specified 1⅜-to-1¹⁄₁₆-inch tapered spindle with a 5-on-4½-inch wheel bolt pattern and a 1,750 lb hub rating.
Keep contamination out16200A is a plain dust cap for a 1.980-inch opening. The 16271 is a 1.985-inch chrome bearing protector with a spring-loaded grease-pressure feature.
Secure wheel or spindle11052A and 16720A are wheel lug nuts; 11062A contains wheel bolts; and 11065A is spindle nut hardware. These parts have different installation positions.
C.E. Smith hub and wheel hardware comparison
| MPN | Function | Measurement or specification | What distinguishes it |
|---|---|---|---|
| 13515 | Galvanized hub kit | 5 on 4½ in bolt circle | 1⅜-to-1¹⁄₁₆-in tapered spindle; 1,750 lb per hub |
| 16200A | Plain hub dust caps | 1.980 in nominal hub bore | Protect the axle-nut area |
| 16271 | Spring-loaded bearing protectors | 1.985 in nominal hub bore | Chrome-plated steel, with pressure-relief feature |
| 11052A | Open-end acorn lug nuts | ½-20 thread | Zinc-plated, 13⁄16-in hex |
| 16720A | Extra-long acorn lug nuts | ½-20 thread | Chrome-plated, conical seat |
| 11062A | Conical-seat wheel bolts | ½-20 × 1⅝ in long | Zinc-plated |
| 11065A | Spindle nuts and washers | For specified spindle hardware | Separate from the wheel's lug nuts |
The 13515 hub kit is supplied pre-greased and assembled, with the manufacturer's included dust cap, cotter pin and lug nuts. It is not necessary to assume that all the separate parts pictured below must also be ordered with the complete hub.
Fit is determined by the actual hub, wheel and spindle. A 1.980-inch dust-cap specification and a 1.985-inch bearing-protector specification are not blanket interchangeability claims. Measure the hub bore and use the approved installation instructions. Likewise, matching ½-20 threads does not establish the correct wheel seat, hardware length, strength or tightening specification.
How to select the right part
- Identify the axle and hub: for a complete hub replacement, confirm the spindle bearing-journal dimensions, taper, wheel bolt circle and hub capacity. The 13515 has a 5-on-4½-inch bolt circle and is not a universal replacement.
- Measure the dust-cap seating bore: C.E. Smith lists 1.980 inches for 16200A and 1.985 inches for 16271. Check the original hub's dimension and the correct component design.
- Choose plain cap or pressure-assisted protector: they serve different maintenance needs. The 16271 uses a spring-loaded piston and pressure relief; it is not merely a decorative cover.
- Distinguish wheel nuts from wheel bolts: 11052A and 16720A install on suitable wheel studs; 11062A consists of bolts for a compatible threaded wheel hub. The hub design and wheel seat must be verified.
- Check spindle nut hardware independently: 11065A is used at the end of the axle spindle, not on the wheel mounting flange. Match the original spindle thread, washer and retention arrangement.
- Use the installation requirements: bearings, seals, wheel fasteners and hub retaining parts need the correct lubrication, setting and tightening procedures for the specific axle and wheel.
Shop exact C.E. Smith hub-service parts
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C.E. Smith 16200A
Plain hub dust caps · 1.980 in nominal hub bore
Plain metal dust caps, manufacturer packaged as a pair
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C.E. Smith 16271
Spring-loaded bearing protectors · 1.985 in nominal hub bore
Grease-retaining bearing-protector system; different from a plain cap
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C.E. Smith 11052A
Open-end acorn lug nuts · ½-20 thread
Five wheel nuts; check wheel seat and stud size
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C.E. Smith 16720A
Extra-long acorn lug nuts · ½-20 thread
Five extended wheel nuts, not the short open-end type
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C.E. Smith 11062A
Conical-seat wheel bolts · ½-20 × 1⅝ in long
Five bolts for compatible threaded hubs, not wheel studs
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C.E. Smith 11065A
Spindle nuts and washers · For specified spindle hardware
Two spindle nuts with washers; verify the exact shaft and retainer
See this exact partOther trailer wheel and mounting references
Need related trailer hardware? Compare our trailer spare-tire carrier guide and Fulton bearing-protector sizes. Use the correct original part and dimensions for each installation.
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