EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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Roll formed hardened Spirol® Spring Dowels accurately align mating components with respect to each other. They are formed around arbors to assure roundness, have staggered seams to prevent interlocking, and lead-in beveled chamfers ease insertion. Their outer diameter is larger than the diameter of the mounting hole, and their spring action enables them to conform to a drilled or cored hole and be self-retained.
Spirol® Roll Formed Hardened Spring Dowels
Unit of Measure
1 2 

Item #

Item Name

Outside Diameter

Nominal Dowel Diameter

Length (L) (Decimal)

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E10S08480021 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 0.375 in
E10S08480022 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 0.500 in
E10S08480027 N/A Spirol® 0.323 to 0.333 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.323 to 0.333 in N/A 0.312 in N/A 0.500 in
E10S08480031 N/A Spirol® 0.385 to 0.395 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.385 to 0.395 in N/A 0.375 in N/A 0.500 in
E10S08480032 N/A Spirol® 0.385 to 0.395 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.385 to 0.395 in N/A 0.375 in N/A 0.750 in
E10S08480028 N/A Spirol® 0.323 to 0.333 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.323 to 0.333 in N/A 0.312 in N/A 0.750 in
E10S08480035 N/A Spirol® 0.510 to 0.520 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.510 to 0.520 in N/A 0.500 in N/A 0.750 in
E10S08480023 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 0.750 in
E10S08480025 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 1.250 in1.250 mm
E10S08480030 N/A Spirol® 0.323 to 0.333 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.323 to 0.333 in N/A 0.312 in N/A 1.250 in1.250 mm
E10S08480034 N/A Spirol® 0.385 to 0.395 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.385 to 0.395 in N/A 0.375 in N/A 1.250 in1.250 mm
E10S08480037 N/A Spirol® 0.510 to 0.520 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.510 to 0.520 in N/A 0.500 in N/A 1.250 in1.250 mm
E10S08480039 N/A Spirol® 0.635 to 0.645 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.635 to 0.645 in N/A 0.625 in N/A 1.250 in1.250 mm
E10S08480040 N/A Spirol® 0.635 to 0.645 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.635 to 0.645 in N/A 0.625 in N/A 1.500 in1.500 mm
E10S08480026 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 1.500 in1.500 mm
E10S08480024 N/A Spirol® 0.260 to 0.270 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.260 to 0.270 in N/A 0.250 in N/A 1.000 mm
E10S08480036 N/A Spirol® 0.510 to 0.520 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.510 to 0.520 in N/A 0.500 in N/A 1.000 mm
E10S08480029 N/A Spirol® 0.323 to 0.333 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.323 to 0.333 in N/A 0.312 in N/A 1.000 mm
E10S08480033 N/A Spirol® 0.385 to 0.395 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.385 to 0.395 in N/A 0.375 in N/A 1.000 mm
E10S08480038 N/A Spirol® 0.635 to 0.645 Inch (in) Outside Diameter Roll Formed Hardened Spring Dowel N/A 0.635 to 0.645 in N/A 0.625 in N/A 1.000 mm
E10S08480001 N/A Spirol® 6.25 to 6.50 Millimeter (mm) Outside Diameter Roll Formed Hardened Spring Dowel N/A 6.25 to 6.50 mm N/A 6.00 mm N/A 10.00 mm
E10S08480002 N/A Spirol® 6.25 to 6.50 Millimeter (mm) Outside Diameter Roll Formed Hardened Spring Dowel N/A 6.25 to 6.50 mm N/A 6.00 mm N/A 12.00 mm
E10S08480005 N/A Spirol® 8.25 to 8.50 Millimeter (mm) Outside Diameter Roll Formed Hardened Spring Dowel N/A 8.25 to 8.50 mm N/A 8.00 mm N/A 12.00 mm
E10S08480009 N/A Spirol® 10.25 to 10.50 Millimeter (mm) Outside Diameter Roll Formed Hardened Spring Dowel N/A 10.25 to 10.50 mm N/A 10.00 mm N/A 12.00 mm
E10S08480010 N/A Spirol® 10.25 to 10.50 Millimeter (mm) Outside Diameter Roll Formed Hardened Spring Dowel N/A 10.25 to 10.50 mm N/A 10.00 mm N/A 20.00 mm
Unit of Measure
1 2