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Tanged Screw Locking Inserts contain one or more coils that have a series of straight segments. Upon entry of the bolt these straight segments are flexed outwardly, creating pressure on the bolt. This pressure is applied between the flanks of the bolt thread so that contact area is maximized. Locking inserts are manufactured to meet the locking torque requirements specified in NASM8846. NASM8846 requires the inserts to pass a 15 cycle torque test.
The resilient characteristics of each coil in a helical Insert allows it to adjust independently to secure the maximum surface contact with individual threads in the parent material. As a result, loads are distributed more evenly. Stress and fatigue concentrations are reduced to maximize thread strength and increase the reliability and life of the fastening system.
The stainless steel used to produce coil thread inserts resists corrosion under normal environmental conditions. Galvanic action within the thread assembly is reduced, further adding to the life of the fastening assembly. These Inserts are typically used with temperatures from -320F Degrees to +800F degrees (-195.6C to +426.7C).
Precision engineering, exacting manufacturing standards, and stringent quality control procedures assure a high quality product that meets or exceeds all applicable military and aerospace standards. Helical inserts are available in Bulk and on Strip Feed Reels.
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TLF-4C-0375Y Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0375Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Cadmium Plated
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0375Y | MPN: TLF-4C-0375Y
MS: MS21209-F4-15P
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BSPN: BA-TLF-4C-0375Y | MPN: TLF-4C-0375Y
MS: MS21209-F4-15P
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Kato TLF-4C-0375Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Cadmium Plated
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TLF-4C-0375W Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0375W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0375W | MPN: TLF-4C-0375W
MS: MS21209-F4-15L
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BSPN: BA-TLF-4C-0375W | MPN: TLF-4C-0375W
MS: MS21209-F4-15L
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Kato TLF-4C-0375W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel
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TLF-4C-0375WSF Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0375WSF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Strip-Feed
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0375WSF | MPN: TLF-4C-0375WSF
MS: MS21209-F4-15LS
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BSPN: BA-TLF-4C-0375WSF | MPN: TLF-4C-0375WSF
MS: MS21209-F4-15LS
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Kato TLF-4C-0375WSF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Strip-Feed
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TLF-4C-0375 Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0375 Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Red Dye Coating
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0375 | MPN: TLF-4C-0375
MS: MS21209-F4-15
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Qty Interval: 1
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BSPN: BA-TLF-4C-0375 | MPN: TLF-4C-0375
MS: MS21209-F4-15
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Avg Lead Time For Backorders: Nil
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Available Qty: -
Kato TLF-4C-0375 Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Red Dye Coating
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TLF-4C-0375SF Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0375SF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Strip-Feed, Red Dye Coating
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0375SF | MPN: TLF-4C-0375SF
MS: MS21209-F4-15S
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BSPN: BA-TLF-4C-0375SF | MPN: TLF-4C-0375SF
MS: MS21209-F4-15S
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Kato TLF-4C-0375SF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1.5D/0.375 Inch Length, 304 Stainless Steel, Strip-Feed, Red Dye Coating
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TLF-4C-0250Y Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0250Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Cadmium Plated
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0250Y | MPN: TLF-4C-0250Y
MS: MS21209-F4-10P
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BSPN: BA-TLF-4C-0250Y | MPN: TLF-4C-0250Y
MS: MS21209-F4-10P
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Kato TLF-4C-0250Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Cadmium Plated
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TLF-4C-0250W Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0250W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0250W | MPN: TLF-4C-0250W
MS: MS21209-F4-10L
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BSPN: BA-TLF-4C-0250W | MPN: TLF-4C-0250W
MS: MS21209-F4-10L
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Kato TLF-4C-0250W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel
We are sorry! The quantity you requested is not currently available with us. Please visit the
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TLF-4C-0250WSF Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0250WSF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Strip-Feed
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0250WSF | MPN: TLF-4C-0250WSF
MS: MS21209-F4-10LS
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BSPN: BA-TLF-4C-0250WSF | MPN: TLF-4C-0250WSF
MS: MS21209-F4-10LS
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Avg Lead Time For Backorders: Nil
Backorder Available Date: Nil
Available Qty: -
Kato TLF-4C-0250WSF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Strip-Feed
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TLF-4C-0250 Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0250 Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Red Dye Coating
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0250 | MPN: TLF-4C-0250
MS: MS21209-F4-10
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BSPN: BA-TLF-4C-0250 | MPN: TLF-4C-0250
MS: MS21209-F4-10
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Kato TLF-4C-0250 Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Red Dye Coating
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TLF-4C-0250SF Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0250SF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Strip-Feed, Red Dye Coating
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0250SF | MPN: TLF-4C-0250SF
MS: MS21209-F4-10S
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Qty Interval: 1
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BSPN: BA-TLF-4C-0250SF | MPN: TLF-4C-0250SF
MS: MS21209-F4-10S
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Avg Lead Time For Backorders: Nil
Backorder Available Date: Nil
Available Qty: -
Kato TLF-4C-0250SF Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 1D/0.250 Inch Length, 304 Stainless Steel, Strip-Feed, Red Dye Coating
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TLF-4C-0625Y Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0625Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 2.5D/0.625 Inch Length, 304 Stainless Steel, Cadmium Plated
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0625Y | MPN: TLF-4C-0625Y
MS: MS21209-F4-25P
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BSPN: BA-TLF-4C-0625Y | MPN: TLF-4C-0625Y
MS: MS21209-F4-25P
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Avg Lead Time For Backorders: Nil
Backorder Available Date: Nil
Available Qty: -
Kato TLF-4C-0625Y Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 2.5D/0.625 Inch Length, 304 Stainless Steel, Cadmium Plated
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TLF-4C-0625W Kato TLF Tanged CoilThread Inserts Kato TLF-4C-0625W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 2.5D/0.625 Inch Length, 304 Stainless Steel
Minimum Order Qty : 1 | Qty Interval : N/A
BSPN: BA-TLF-4C-0625W | MPN: TLF-4C-0625W
MS: MS21209-F4-25L
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BSPN: BA-TLF-4C-0625W | MPN: TLF-4C-0625W
MS: MS21209-F4-25L
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Avg Lead Time For Backorders: Nil
Backorder Available Date: Nil
Available Qty: -
Kato TLF-4C-0625W Tanged Screw-Locking Coil Threaded Insert, Helical, 1/4-28 UNF, 2.5D/0.625 Inch Length, 304 Stainless Steel
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