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E-Z LOK Self Locking Thread Insert: Heavy Wall, 3/4"-16 Int Thrd Sz, 1"-8 Ext Thrd Sz - Heavy Wall Self-Locking Inserts
E-Z LOKHeavy Wall Self-Locking Inserts

E-Z LOK Self Locking Thread Insert: Heavy Wall, 3/4"-16 Int Thrd Sz, 1"-8 Ext Thrd Sz

The E-Z LOK Self Locking Thread Insert is a heavy-wall steel insert (5-pack) with a 3/4"-16 internal thread (UNF, 2B fit) and a 1"-8 external thread (UNC, 2A fit), compatible with a #1-8 tap. 3G Electric interprets…

SKU 3G-OTH-534123

Brand
E-Z LOK
Item
Self Locking Thread Insert: Heavy Wall, 3/4"-16 Int Thrd Sz, 1"-8 Ext Thrd Sz
Category
Heavy Wall Self-Locking Inserts
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Technical Specifications

E-Z LOK
Manufacturer Part Number
329-1216-PK5
Type
Steel, 5 PK
Wall Type
Heavy Wall
Ext Thrd Sz
1"-8
Int Thrd Sz
3/4"-16
Thread Type
UNF Internal/UNC External
Compatible Tap Size
#1-8
External Thread Fit
2A
Internal Thread Fit
2B
System of Measurement
Inch
View Full Spec Sheet

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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 steel insert (5-pack) with a 3/4"-16 internal thread (UNF, 2B fit) and a 1"-8 external thread (UNC, 2A fit), compatible with a #1-8 tap. 3G Electric interprets this demand and sources the exact OEM part (MPN 329-1216-PK5) across 14 industrial departments, with specialist depth in fastening and assembly solutions.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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 internal threads in metal assemblies. The heavy-wall steel insert (3/4"-16 internal, 1"-8 external) provides a permanent, vibration-resistant thread for industrial machinery, automotive, and heavy equipment applications.

What are the specifications of E-Z LOK 329-1216-PK5?

This 5-pack heavy-wall steel insert has a 3/4"-16 UNF internal thread (2B fit) and a 1"-8 UNC external thread (2A fit). It requires a #1-8 tap and is inch-system. The E-Z LOK brand ensures reliable self-locking performance in demanding environments.

Where to buy E-Z LOK thread inserts in worldwide?

3G Electric supplies E-Z LOK thread inserts worldwide. We source the exact OEM part (MPN 329-1216-PK5) and handle logistics, customs, and delivery to your location. Contact us for availability and lead time on this heavy-wall steel insert.

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

Install E-Z LOK heavy wall inserts by tapping the hole to the specified size (#1-8), then driving the insert into the tapped hole using a standard installation tool. The self-locking feature engages upon insertion, providing a secure, permanent thread repair without adhesives.

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, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, Plain, 5 PK (MPN 303-332-PK5). Key specifications — Compatible Tap Size: 3/8"-16; 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, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, Plain, 5 PK (MPN 303-332-PK5). Key specifications — Compatible Tap Size: 3/8"-16; 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, M24-3.00 Ext Thrd Sz, 5 PK (MPN 453-16-PK5). Key specifications — Compatible Tap Size: M24-3.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 21 mm; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M16-2.00 Int Thrd Sz, M24-3.00 Ext Thrd Sz, 5 PK (MPN 453-16-PK5). Key specifications — Compatible Tap Size: M24-3.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 21 mm; External Thread Fit: 6G.
E-Z LOK Self Locking Thread Insert: Heavy Wall, M4-0.70 Int Thrd Sz, M8-1.25 Ext Thrd Sz, 5 PK (MPN 453-4-PK5). 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, 5 PK (MPN 453-4-PK5). 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, 1/4"-28 Int Thrd Sz, 7/16"-14 Ext Thrd Sz, 10 PK (MPN 329-428-PK10). Key specifications — Compatible Tap Size: 7/16"-14; 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, 1/4"-28 Int Thrd Sz, 7/16"-14 Ext Thrd Sz, 10 PK (MPN 329-428-PK10). Key specifications — Compatible Tap Size: 7/16"-14; 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, M10-1.50 Int Thrd Sz, M16-2.00 Ext Thrd Sz, 5 PK (MPN 450-10-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Inch; 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 450-10-PK5). Key specifications — Compatible Tap Size: M16-2.00; Internal Thread Fit: 6H; System of Measurement: Inch; 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, 5/8"-11 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, Plain, 5 PK (MPN 303-10-PK5). Key specifications — Compatible Tap Size: 7/8"-9; 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, 5/8"-11 Int Thrd Sz, 7/8"-9 Ext Thrd Sz, Plain, 5 PK (MPN 303-10-PK5). Key specifications — Compatible Tap Size: 7/8"-9; 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, M6-1.00 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, 10 PK (MPN 650-6-PK10). Key specifications — Compatible Tap Size: 3/8"-16; 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, M6-1.00 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, 10 PK (MPN 650-6-PK10). Key specifications — Compatible Tap Size: 3/8"-16; 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, M16-2.00 Int Thrd Sz, M24-3.00 Ext Thrd Sz, 5 PK (MPN 450-16-PK5). Key specifications — Compatible Tap Size: M24-3.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 21 mm; External Thread Fit: 6G.
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E-Z LOK Self Locking Thread Insert: Heavy Wall, M16-2.00 Int Thrd Sz, M24-3.00 Ext Thrd Sz, 5 PK (MPN 450-16-PK5). Key specifications — Compatible Tap Size: M24-3.00; Internal Thread Fit: 6H; System of Measurement: Metric; Thread Type: Metric; Wall Type: Heavy Wall; Drill Bit Size: 21 mm; External Thread Fit: 6G.