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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Single-Thread Engaging Self-Locking W-Type Bolt Retainers provide a dual locking action where an inward thread lock combines with an arched spring lock to ensure strong and reliable holding power.

Available in a wide range of standard and custom variations, these W-Type Bolt Retainers work with all major screw types and sizes.
Single-Thread Engaging Self-Locking W-Type Bolt Retainers
Single-Thread Engaging Self-Locking W-Type Bolt Retainers - 2
Unit of Measure
1 

Item #

Item Name

Thread Size

Material Thickness (Decimal)

Height

01072025-24Q N/A 1/4-20 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 1/4-20 N/A 0.025 in N/A
01C8780017 N/A 1/4-20 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 1/4-20 N/A 0.017 in N/A 0.320 in
01C63251420 N/A 1/4-20 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 1/4-20 N/A 0.025 in N/A 0.240 in
01C6325SS1420 N/A 1/4-20 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 1/4-20 N/A 0.025 in N/A 0.240 in
01C63255618 N/A 5/16-18 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 5/16-18 N/A 0.028 in N/A 0.240 in
01072029-01Q N/A 3/8-16 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 3/8-16 N/A 0.028 in N/A
01C63253816 N/A 3/8-16 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 3/8-16 N/A 0.028 in N/A 0.240 in
01C18904Z N/A 4B Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 4B N/A 0.020 in N/A 0.120 in
01DCS237 N/A 6A Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6A N/A 0.022 in N/A 0.115 in
01005034-24Q N/A 6-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6-32 N/A 0.017 in N/A 0.120 in
01C224632 N/A 6-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6-32 N/A 0.017 in N/A 0.120 in
01C2246Z N/A 6B Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6B N/A 0.022 in N/A 0.120 in
01C64396Z N/A 6B Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6B N/A 0.022 in N/A 0.120 in
01C70633SS031 N/A 6T Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6T N/A N/A
01C49325SS031 N/A 6-20(B) Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 6-20(B) N/A N/A
01D06957832 N/A 8-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 8-32 N/A 0.017 in N/A 0.150 in
01DCS231 N/A 8-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 8-32 N/A 0.017 in N/A 0.150 in
01DCS585 N/A 8-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 8-32 N/A 0.017 in N/A 0.150 in
01C221832 N/A 8-32 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 8-32 N/A 0.017 in N/A 0.120 in
01C2218A N/A 8A Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 8A N/A 0.025 in N/A 0.130 in
01C3351024 N/A 10-24 Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 10-24 N/A 0.022 in N/A 0.110 in
01C45880SS10Z N/A 10B Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 10B N/A N/A
01C70618SS031 N/A 10T Thread Size Single-Thread Engaging Self-Locking W-Type Bolt Retainer N/A 10T N/A N/A
Unit of Measure
1