Value Collection SM25N07 Taper Pin Reamer No. 7 Hss

Product Description

The VALUE COLLECTION SM25N07 is a No. 7 taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Machined from high-speed steel (HSS) with a bright/uncoated finish, it features a spiral flute geometry with a right-hand cutting direction and left-hand spiral for smooth chip evacuation. The small end diameter is 0.3297 inches and the large end diameter is 0.4220 inches, following a 1:48 taper rate. Overall length is 6.3125 inches with a 4.4375-inch flute length and a straight shank measuring 0.4063 inches in diameter. This reamer is suited for general-purpose use in machine shops, maintenance environments, and production settings.

The SM25N07 is used wherever No. 7 taper pins must be seated accurately in shafts, hubs, and mechanical assemblies. Typical applications include hole finishing in steel, aluminum, and other machinable metals where a precise tapered bore is required prior to pin installation. It is appropriate for manual or machine-driven use in general manufacturing, toolroom, and repair applications.

Key Features

• No. 7 taper pin size with a 1:48 taper rate for accurate pin fitment
• High-speed steel construction for durability across a range of machinable materials
• Spiral flute design promotes smooth chip removal during cutting
• Right-hand cut with left-hand spiral for reduced chatter and clean finish
• Bright/uncoated finish suitable for general-purpose hole finishing
• Straight shank compatible with standard chucks and holders

Compatibility

Designed as a general-purpose No. 7 taper pin reamer for use in standard drill presses, milling machines, or hand-held drilling equipment with a compatible straight-shank chuck. Suitable for applications requiring ASME standard No. 7 taper pin hole preparation.

Installation Notes

Always power down and lock out the machine before securing or removing the reamer from the chuck. Use appropriate cutting fluid or lubricant to extend tool life and improve surface finish, especially in steel workpieces. Apply steady, consistent feed pressure to avoid deflection or premature wear. Follow applicable shop safety standards and machine operating procedures when operating rotating cutting tools.