THREADED 1-8 BACKPLATE/ADAPTER FOR 5″ LATHE CHUCKS (3900-3308)

THREADED 1-8 BACKPLATE/ADAPTER FOR 5″ LATHE CHUCKS (3900-3308) (SKU: 3900-3308)

Threaded 1-8 Backplate/Adapter for 5″ Lathe Chucks

• No bolt holes
• Machining is required before mounting your chuck to ensure concentricity
• For 3 & 4-jaw chucks
• Made of high grade casting steel
• A is 125mm
• B is 1″-8
• D is 25.4mm smooth bore
• E is 5mm
• F is 56mm
• G is 10mm
• g is 4mm
• G + h is 26mm
• g + H is 30mm
• K is 100mm

Specifications

• Threaded 1-8 Backplate/Adapter for 5″ Lathe Chucks
• No bolt holes.
• Machining is required before mounting your chuck to ensure concentricity.
• For 3 & 4-jaw chucks.
• A is 125mm.
• B is 1″-8.
• D is 25.4mm smooth bore.
• E is 5mm.
• F is 56mm.
• G is 10mm.
• g is 4mm.
• G + h is 26mm.
• g + H is 30mm.
• K is 100mm.
• Weight: 3.9
• Dimensions: L 6, W 6, H 6

Benefits

• Industrial-grade tooling designed for dependable shop performance.
• Supports consistent results when applied with correct setup practices.
• A practical choice for U.S. machine shops and maintenance work.

Recommended use

• Confirm compatibility (size, interface, machine capacity) before ordering.
• Follow safe operating practices and use appropriate PPE.
• Optimize setup rigidity and process parameters for best results.

USA Warehouse Stock — Fast U.S. fulfillment.