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E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/8"-11 Int Thrd Sz, 7/8"-9 Ext Thrd Sz - Heavy Wall Self-Locking Inserts
E-Z LOKHeavy Wall Self-Locking Inserts

E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/8"-11 Int Thrd Sz, 7/8"-9 Ext Thrd Sz

The E-Z LOK Self Locking Thread Insert is a heavy-wall, inch-system steel insert (5-pack) with an internal thread size of 5/8"-11 (coarse, 2B fit) and an external thread size of 7/8"-9 (coarse, 2A fit), compatible…

SKU 3G-OTH-534181

Brand
E-Z LOK
Item
Self Locking Thread Insert: Heavy Wall, 5/8"-11 Int Thrd Sz, 7/8"-9 Ext Thrd Sz
Category
Heavy Wall Self-Locking Inserts
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Technical Specifications

E-Z LOK
Manufacturer Part Number
329-1018-PK5
Type
Steel, 5 PK
Wall Type
Heavy Wall
Ext Thrd Sz
7/8"-9
Int Thrd Sz
5/8"-11
Thread Type
Coarse
Compatible Tap Size
7/8"-9
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 steel insert (5-pack) with an internal thread size of 5/8"-11 (coarse, 2B fit) and an external thread size of 7/8"-9 (coarse, 2A fit), compatible with a 7/8"-9 tap. 3G Electric interprets this demand and sources the exact OEM-specified insert, backed by our specialist depth in fastening and industrial components across 14 departments.

Frequently Asked Questions

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

The E-Z LOK Self Locking Thread Insert repairs or reinforces stripped or worn internal threads in metal assemblies. Its heavy-wall steel design provides a permanent, vibration-resistant thread for demanding industrial applications across machining, material handling, and power transmission systems.

What are the specifications of the E-Z LOK 329-1018-PK5 thread insert?

This 5-pack heavy-wall steel insert has an internal thread size of 5/8"-11 (coarse, 2B fit) and an external thread size of 7/8"-9 (coarse, 2A fit). It is compatible with a 7/8"-9 tap and uses inch-system measurement. The manufacturer part number is 329-1018-PK5.

Where to buy E-Z LOK thread inserts worldwide?

3G Electric supplies E-Z LOK thread inserts worldwide. We interpret your demand, source the exact OEM-specified part, and handle full logistics and customs clearance for delivery to your facility. Contact us for availability and lead time on the 329-1018-PK5 or other industrial components.

How to install an E-Z LOK heavy wall thread insert?

To install, tap the hole to the specified compatible tap size (7/8"-9 for this insert), clean the threads, then drive the insert using a standard installation tool until it is slightly below the surface. The self-locking feature secures the insert without adhesives. Follow the manufacturer's torque recommendations.

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, 1"-8 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz, Steel, 5 PK (MPN 329-16-PK5). Key specifications — Compatible Tap Size: 1-3/8"-12; 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, 1"-8 Int Thrd Sz, 1 3/8"-12 Ext Thrd Sz, Steel, 5 PK (MPN 329-16-PK5). Key specifications — Compatible Tap Size: 1-3/8"-12; 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, 9/16"-12 Int Thrd Sz, 3/4"-10 Ext Thrd Sz, 5 PK (MPN 329-9-PK5). Key specifications — Compatible Tap Size: 3/4"-10; 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, 9/16"-12 Int Thrd Sz, 3/4"-10 Ext Thrd Sz, 5 PK (MPN 329-9-PK5). Key specifications — Compatible Tap Size: 3/4"-10; 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, M20-2.50 Int Thrd Sz, M36-4.00 Ext Thrd Sz, 5 PK (MPN 450-20-PK5). Key specifications — Compatible Tap Size: M36-4.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 33 mm; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M20-2.50 Int Thrd Sz, M36-4.00 Ext Thrd Sz, 5 PK (MPN 450-20-PK5). Key specifications — Compatible Tap Size: M36-4.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 33 mm; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, 3/8"-16 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 550-6-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 2A.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, 3/8"-16 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 550-6-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: UNC Internal/Metric External; Wall Type: Heavy Wall; Drill Bit Size: 14 mm; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M4-0.70 Int Thrd Sz, M8-1.25 Ext Thrd Sz, 10 PK (MPN 450-4-PK10). Key specifications — Compatible Tap Size: M8-1.25; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M4-0.70 Int Thrd Sz, M8-1.25 Ext Thrd Sz, 10 PK (MPN 450-4-PK10). Key specifications — Compatible Tap Size: M8-1.25; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M14-2.00 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, 5 PK (MPN 650-14-PK5). Key specifications — Compatible Tap Size: 7/8"-9; 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, M14-2.00 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, 5 PK (MPN 650-14-PK5). Key specifications — Compatible Tap Size: 7/8"-9; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Metric Internal/UNC External; Wall Type: Heavy Wall; External Thread Fit: 2A.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M3-0.50 Int Thrd Sz, M6-1.00 Ext Thrd Sz, 10 PK (MPN 450-3-PK10). Key specifications — Compatible Tap Size: M6-1.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M3-0.50 Int Thrd Sz, M6-1.00 Ext Thrd Sz, 10 PK (MPN 450-3-PK10). Key specifications — Compatible Tap Size: M6-1.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, 5/16"-18 Int Thrd Sz, 1/2"-13 Ext Thrd Sz, 10 PK (MPN 329-5-PK10). Key specifications — Compatible Tap Size: 1/2"-13; 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, 5/16"-18 Int Thrd Sz, 1/2"-13 Ext Thrd Sz, 10 PK (MPN 329-5-PK10). Key specifications — Compatible Tap Size: 1/2"-13; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Heavy Wall; External Thread Fit: 2A.