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Review Summary
M42 Universal Screw Mount (42mm diameter, 1mm thread pitch)
2.4 x 2.4 x 0.2"
027075006461
For any questions about compatibility with this product, call us at 800-223-2500 or you can email us any time.
The Pentax 31001 Rear Lens Cap is an essential protective accessory designed specifically for classic threaded M42 screwmount lenses. Crafted from durable, high-grade composite materials, this genuine cap securely twists onto the rear mount of your vintage glass to seal out dust, moisture, fingerprints, and accidental smudges. Whether you are storing your gear in a camera bag or swapping lenses on the fly during a shoot, this cap ensures the delicate rear element and mechanical linkages remain completely shielded from scratches and impact damage.
Designed for use with: Pentax Lenses .