Cap Bolt (Allen Socket) M8 x 58, Grade 8.8, White Zinc – Royal Enfield OEM – H6902026/B

Royal Enfield H6902026/B (commonly searched as H6902026) is a genuine OEM cap bolt / Allen socket head bolt with specification M8 × 58 mm, property class 8.8, with white zinc (WHT) corrosion-resistant finish. This is a high-strength standard fastener used across multiple Royal Enfield assemblies where an M8 socket head bolt of exact length and grade is required (engine mounts, brackets, chassis fittings, and other structural joints depending on model).

Because this is a generic hardware fastener, fitment is best confirmed by bolt spec rather than only by bike name. Wrong length (too short/too long) or wrong grade can cause thread damage, loosening, or component misalignment. If your current bolt is rounded, seized, rusted, missing, or you are restoring an assembly to factory spec, ordering the correct OEM M8×58 8.8 bolt is the safest option.

Before you buy: confirm you need M8 thread and 58 mm length (under-head) with socket head. Share a photo/measurement of the old bolt if unsure.

Key Features 

• Genuine Royal Enfield OEM fastener: H6902026/B (search term: H6902026)
• Specification: M8 × 58 mm socket head cap bolt
• Strength grade: 8.8 (structural fastener class)
• Finish: White zinc / WHT for corrosion resistance
• Correct OEM thread tolerance and shank length for factory fit
• Ideal for replacements: rounded Allen head, rusted bolt, seized bolt, missing bolt
• Prevents wrong hardware issues (length/grade mismatch) compared to generic local bolts
• Return-prevention: order by spec + photo/measurement

Compatibility Table

Variants

No variants. (Catalog reference commonly shown as H6902026/B; customers may search as H6902026.)

FAQs 

Q1 (Fitment): How do I confirm H6902026 fits my bike?
Confirm by specification: it must be a socket head cap bolt with M8 thread and 58 mm length (under the head), grade 8.8. If you share a photo/measurement of your old bolt, we can verify before dispatch.

Q2 (Fitment): Is this bolt model-specific (Classic/Interceptor/Hunter etc.)?
Not reliably. This bolt is used in different places across different models/years. Always order by spec (M8×58, 8.8) and the assembly location, not by bike name alone.

Q3 (Comparison): OEM bolt vs local hardware bolt — why pay more?
OEM bolts typically match correct shank length, thread tolerance, and coating. Local bolts may be the wrong length/grade or poor plating, leading to rust, loosening, or damaged threads.

Q4 (Installation): Any precautions while installing?
Clean the threads, start by hand to avoid cross-threading, and tighten to the correct torque for the joint. If the old bolt was seized, inspect the female threads and consider using thread locker only where the service manual recommends.

Q5 (Symptoms): When do I need to replace this bolt?
Rounded Allen head, visible thread damage, rust/seizure, missing bolt, or after a crash where the joint has shifted and hardware is compromised.

Q6 (Returns-prevention): What should I send to confirm before shipping?
Send (1) photo of the old bolt next to a scale, (2) a measurement of length under the head (should be 58 mm), and (3) where it’s used (mount/bracket location). This prevents wrong-length orders.