Temperature Specialists, Inc.
JBF National 49175 West Rd.
JBF National 49175 West Rd. Wixom, MI. 48393
Phone: 248-957-8871
Fax: 248-987-0438
E-Mail: Sales@jbfnational.com
Website: www.jbfnational.com
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JBF National U series sprue bushings come hardened and ground, and feature a 43/45 RC through hardness.
U Series Sprue Bushings
<!-U Series Sprue Bushings - 2->
Unit of Measure
1 

Item #

Dimension T

Dimension B

Dimension E

Dimension R

Drawings

BW8645 N/A 1-25/32 in N/A 29/32 in N/A 5/32 in N/A 1/2 in

BW8649 N/A 2-9/32 in N/A 1-13/32 in N/A 5/32 in N/A 1/2 in

BW8653 N/A 2-25/32 in N/A 1-29/32 in N/A 5/32 in N/A 1/2 in

BW8657 N/A 3-9/32 in N/A 2-13/32 in N/A 5/32 in N/A 1/2 in

BW8661 N/A 3-25/32 in N/A 2-29/32 in N/A 5/32 in N/A 1/2 in

BW8646 N/A 1-25/32 in N/A 29/32 in N/A 7/32 in N/A 1/2 in

BW8650 N/A 2-9/32 in N/A 1-13/32 in N/A 7/32 in N/A 1/2 in

BW8654 N/A 2-25/32 in N/A 1-29/32 in N/A 7/32 in N/A 1/2 in

BW8658 N/A 3-9/32 in N/A 2-13/32 in N/A 7/32 in N/A 1/2 in

BW8662 N/A 3-25/32 in N/A 2-29/32 in N/A 7/32 in N/A 1/2 in

BW8647 N/A 1-25/32 in N/A 29/32 in N/A 5/32 in N/A 3/4 in

BW8651 N/A 2-9/32 in N/A 1-13/32 in N/A 5/32 in N/A 3/4 in

BW8655 N/A 2-25/32 in N/A 1-29/32 in N/A 5/32 in N/A 3/4 in

BW8659 N/A 3-9/32 in N/A 2-13/32 in N/A 5/32 in N/A 3/4 in

BW8663 N/A 3-25/32 in N/A 2-29/32 in N/A 5/32 in N/A 3/4 in

BW8648 N/A 1-25/32 in N/A 29/32 in N/A 7/32 in N/A 3/4 in

BW8652 N/A 2-9/32 in N/A 1-13/32 in N/A 7/32 in N/A 3/4 in

BW8656 N/A 2-25/32 in N/A 1-29/32 in N/A 7/32 in N/A 3/4 in

BW8660 N/A 3-9/32 in N/A 2-13/32 in N/A 7/32 in N/A 3/4 in

BW8664 N/A 3-25/32 in N/A 2-29/32 in N/A 7/32 in N/A 3/4 in

Unit of Measure
1