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E-Z LOK Self Locking Thread Insert: Heavy Wall, 7/16"-14 Int Thrd Sz, 5/8"-11 Ext Thrd Sz - Heavy Wall Self-Locking Inserts
E-Z LOKHeavy Wall Self-Locking Inserts

E-Z LOK Self Locking Thread Insert: Heavy Wall, 7/16"-14 Int Thrd Sz, 5/8"-11 Ext Thrd Sz

The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 7/16"-14 internal thread and a 5/8"-11 external thread, compatible with a 5/8"-11 tap. Supplied as a 5-pack (MPN 303-7-PK5), it…

SKU 3G-OTH-534156

Brand
E-Z LOK
Item
Self Locking Thread Insert: Heavy Wall, 7/16"-14 Int Thrd Sz, 5/8"-11 Ext Thrd Sz
Category
Heavy Wall Self-Locking Inserts
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Technical Specifications

E-Z LOK
Manufacturer Part Number
303-7-PK5
Type
5 PK
Wall Type
Heavy Wall
Ext Thrd Sz
5/8"-11
Int Thrd Sz
7/16"-14
Thread Type
Coarse
Compatible Tap Size
5/8"-11
External Thread Fit
2A
Internal Thread Fit
2B
System of Measurement
Inch
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E-Z LOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system insert with a 7/16"-14 internal thread and a 5/8"-11 external thread, compatible with a 5/8"-11 tap. Supplied as a 5-pack (MPN 303-7-PK5), it features coarse threads with 2A external and 2B internal thread fits.

Frequently Asked Questions

What is E-Z LOK Self Locking Thread Insert used for?

E-Z LOK Self Locking Thread Inserts repair or reinforce stripped or worn internal threads in metal assemblies. The heavy-wall design provides extra holding power for demanding industrial applications such as machinery, automotive, and equipment maintenance where a 7/16"-14 internal thread is needed.

What are the specifications of E-Z LOK 303-7-PK5?

This heavy-wall insert has a 7/16"-14 internal thread size and a 5/8"-11 external thread size, compatible with a 5/8"-11 tap. It uses coarse threads with 2A external and 2B internal thread fits, inch system, supplied as a 5-pack (MPN 303-7-PK5).

Where to buy E-Z LOK thread inserts worldwide?

3G Electric supplies E-Z LOK Self Locking Thread Inserts to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 303-7-PK5 5-pack.

How to install E-Z LOK heavy wall thread inserts?

Installation requires tapping the hole to 5/8"-11 using the compatible tap, then driving the insert into the tapped hole until it is flush or slightly below the surface. Use a standard installation tool for E-Z LOK inserts. Follow manufacturer guidelines for torque and depth to ensure a secure fit.

E-Z LOK Products

3G Electric supplies E-Z LOK heavy wall self-locking inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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E-Z LOK Self Locking Thread Insert: Heavy Wall, M12-1.75 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 453-12-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M12-1.75 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 453-12-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/16"-18 Int Thrd Sz, M12-1.75 Ext Thrd Sz, 5 PK (MPN 550-5-PK5). Key specifications — Compatible Tap Size: M12-1.75; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/16"-18 Int Thrd Sz, M12-1.75 Ext Thrd Sz, 5 PK (MPN 550-5-PK5). Key specifications — Compatible Tap Size: M12-1.75; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/8"-18 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, Steel, 5 PK (MPN 329-10F-PK5). Key specifications — Compatible Tap Size: 7/8"-9; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: UNF Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/8"-18 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, Steel, 5 PK (MPN 329-10F-PK5). Key specifications — Compatible Tap Size: 7/8"-9; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: UNF Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, #8-32 Int Thrd Sz, M8-1.25 Ext Thrd Sz, Steel, 5 PK (MPN 550-008-PK5). Key specifications — Compatible Tap Size: M8-1.25; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, #8-32 Int Thrd Sz, M8-1.25 Ext Thrd Sz, Steel, 5 PK (MPN 550-008-PK5). Key specifications — Compatible Tap Size: M8-1.25; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M10-1.50 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 453-10-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M10-1.50 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 453-10-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, #10-24 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, Plain, 5 PK (MPN 303-3-PK5). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, #10-24 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, Plain, 5 PK (MPN 303-3-PK5). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, 1/2"-20 Int Thrd Sz, 3/4"-10 Ext Thrd Sz, 5 PK (MPN 303-820-PK5). Key specifications — Compatible Tap Size: 3/4"-10; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: UNF Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, 1/2"-20 Int Thrd Sz, 3/4"-10 Ext Thrd Sz, 5 PK (MPN 303-820-PK5). Key specifications — Compatible Tap Size: 3/4"-10; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: UNF Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M16-2.00 Int Thrd Sz, 1"-8 Ext Thrd Sz, Steel, 5 PK (MPN 650-16-PK5). Key specifications — Compatible Tap Size: #1-8; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Metric Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M16-2.00 Int Thrd Sz, 1"-8 Ext Thrd Sz, Steel, 5 PK (MPN 650-16-PK5). Key specifications — Compatible Tap Size: #1-8; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Metric Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.