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| U.S. EXPLOSIVE ORDNANCE |
| PART 1 - PROJECTILES, PROPELLANT, AND PROECTILE FUZES |
| Chapter 3 - PROJECTILE FUZES |
| Section 3 - NOSE TIME FUZES FOR PROJECTILES |
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Mk 57 |
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Projectiles used in |
8"/55 H.C. (for use in 8" Rapid-Fire case gun). |
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Over-all length, inches |
4.305 |
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Diameter at base of ogive, inches |
2.983 |
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Threaded length, inch |
0.47 |
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Threads |
7 R.H. |
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Material |
Brass |
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Setting times, seconds |
minimum, 0.8-1.0 |
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maximum, 45 |
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Description: This fuze is identical to the Nose Time Fuze Mk 61 in so far as the inter-nal mechanism and method of operation are concerned. The fuze differs from the Mk 61 in that it is provided with external slots for setting, rather than setting lugs. Further-more, the external contour of the fuze differs considerably from that of the Nose Time Fuze Mk 61. The contour changes were necessary to allow the fuze to continue the more streamline shape of the 8-inch H.C. projectile and to strengthen the fuze body and lower cap sufficiently to accommodate the setting slots. |
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Figure 93. Nose Time Fuze Mk 57 |
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