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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 4 – Section 4 |
| ARMY PROJECTILE FUZES |
| Ho 301 - Impact Fuze |
| Use: 40-mm projectiles for the Ho 301 aircraft cannon. |
| Description: |
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Over-all length (with gaine): 1 5/8 inches. |
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Over-all length (without gaine): 1 1/8 inches. |
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Maximum diameter: 1 1/2 inches. |
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Threaded length: 1/4 inch. |
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Number of threads: 6. |
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Construction: The fuze body is made of one piece. The striker is supported by a centri-fugal detent which is held under a shoulder of the striker by two locking centrifugal de-tents. The gaine threads into the bottom of the fuze. |
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Operation: Centrifugal force causes the locking detents to more out, thus freeing the striker detent which moves out arming the fuze. On impact the striker is driven into the primer. |
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Figure 320 – HO 301 Impact Fuze. |
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