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1978 Honda CB400TII Hawk II Steering-Stem Hardware

The chrome steering-stem nut and its washer are separate service items for the 1978 Hawk II. Match them to the existing stem and upper bridge, especially after front-end changes. The nut’s 30 mm hex describes the wrench size, not its thread.

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Honda CB1000 CB900 CB750 CB550 chrome steering stem nut 90304-415-000

Honda CB Chrome Steering Stem Nut ~ Replaces 90304-415-000

$9.95 USD
49-0786
Replace your steering stem nut with this Chrome Steering Stem Nut, hex nut size 30mm, replacing OEM #90304-415-000.Sold each. We also offer the matching...
Honda CB1000 CB900 CB750 CB550 steering stem washer 90503-283-000

Honda CB Steering Stem Washer ~ Replaces 90503-283-000

$3.50 USD
49-0787
Replace your steering stem washer with this Chrome Steering Stem Washer, replacing OEM #90503-283-000.Sold each, order the quantity you require.Key Features• Chrome steering stem...
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1978 Honda CB400TII Hawk II · Steering Hardware Buying guide

Match the top nut and washer to the stem

Choose the nut by its steering-stem application and Honda reference, then inspect the washer beneath it. Both are sold individually; neither selection establishes the condition or adjustment of the steering bearings.

Parts to consider

Honda CB Chrome Steering Stem Nut ~ Replaces 90304-415-000 Chrome steering-stem nutIndividual replacement nut with a 30 mm hex, corresponding to Honda reference 90304-415-000.View part Honda CB Steering Stem Washer ~ Replaces 90503-283-000 Steering-stem washerIndividual chrome washer replacing reference 90503-283-000, for the steering-stem hardware.View part

Order the two pieces deliberately

The chrome nut replaces reference 90304-415-000, while the washer replaces 90503-283-000. Honda’s model-specific top-bridge catalog identifies these as separate parts. Check both existing pieces and order each one needed rather than assuming the nut arrives with a new washer.

Keep fastening and bearing adjustment distinct

A new top nut is useful when its finish or condition needs attention, but steering play or roughness calls for inspection of the steering assembly. Follow the Hawk II manual for bearing checks, assembly order and tightening requirements. Do not use the wrench size to guess a torque value.

Common buying questions

Does the nut include its washer?

The nut and washer are sold as separate products. If both require replacement, add both items; their different Honda reference numbers help identify the correct pieces during front-end service.

Does 30 mm mean the nut has a 30 mm thread?

No. The 30 mm specification is the hex size used for the wrench or socket. Match the steering-stem application and reference number rather than treating that figure as a thread specification.

Will this hardware work with a swapped front end?

A different steering stem or upper bridge can require different hardware. Identify the installed assembly and compare its correct nut and washer specifications before ordering parts intended for the original Hawk II.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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