We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
APPROVED VENDOR Self Locking Thread Insert: Std Wall, 5/16"-18 Int Thrd Sz - Self-Locking Insert & Installation Tool Kits
APPROVED VENDORSelf-Locking Insert & Installation Tool Kits

APPROVED VENDOR Self Locking Thread Insert: Std Wall, 5/16"-18 Int Thrd Sz

The APPROVED VENDOR Self Locking Thread Insert (Std Wall, MPN EZ-303-5) is a standard-wall, inch-system insert with a 5/16"-18 internal thread size and a 1/2"-13 external thread size. It features coarse threads, a…

SKU 3G-OTH-533999

Brand
APPROVED VENDOR
Item
Self Locking Thread Insert: Std Wall, 5/16"-18 Int Thrd Sz
Category
Self-Locking Insert & Installation Tool Kits
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
EZ-303-5
Wall Type
Standard Wall
Ext Thrd Sz
1/2"-13
Int Thrd Sz
5/16"-18
Thread Type
Coarse
Drill Bit Size
27/64
Compatible Tap Size
1/2"-13
External Thread Fit
2A
Internal Thread Fit
2B
System of Measurement
Inch
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Self Locking Thread Insert (Std Wall, MPN EZ-303-5) is a standard-wall, inch-system insert with a 5/16"-18 internal thread size and a 1/2"-13 external thread size. It features coarse threads, a 27/64 drill bit size, and a compatible tap size of 1/2"-13, with external thread fit 2A and internal thread fit 2B.

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 the APPROVED VENDOR Self Locking Thread Insert EZ-303-5 used for?

This standard-wall thread insert repairs or reinforces tapped holes in metal assemblies. It accepts a 5/16"-18 fastener and installs into a 1/2"-13 tapped hole, providing a durable, vibration-resistant thread for industrial machinery, automotive, and equipment maintenance applications.

What are the specifications of the APPROVED VENDOR EZ-303-5 thread insert?

The EZ-303-5 has a 5/16"-18 internal thread size and a 1/2"-13 external thread size, both coarse. It requires a 27/64 drill bit and a 1/2"-13 tap. External thread fit is 2A; internal thread fit is 2B. Wall type is standard, system of measurement is inch.

Where to buy the APPROVED VENDOR EZ-303-5 thread insert worldwide?

3G Electric supplies the APPROVED VENDOR EZ-303-5 self-locking thread insert to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact our team for a quote and lead time on this standard-wall insert.

How to install the APPROVED VENDOR Self Locking Thread Insert EZ-303-5?

Drill a 27/64 hole, tap it to 1/2"-13 using a compatible tap, then insert the EZ-303-5 with a standard installation tool. The self-locking feature secures the insert against vibration. Follow the manufacturer's torque and depth guidelines for best results.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR self-locking insert & installation tool kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from APPROVED VENDOR

View all APPROVED VENDOR parts →
APPROVED VENDOR Self Locking Thread Insert: Std Wall, M6-1.00 Int Thrd Sz, 3/8"-16 Ext Thrd Sz (MPN EZ-650-6). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Coarse; Wall Type: Standard Wall; Drill Bit Size: 5/16; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Std Wall, M6-1.00 Int Thrd Sz, 3/8"-16 Ext Thrd Sz (MPN EZ-650-6). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Coarse; Wall Type: Standard Wall; Drill Bit Size: 5/16; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Std Wall, 1/2"-13 Int Thrd Sz, 3/4"-10 Ext Thrd Sz (MPN EZ-329-8). Key specifications — Compatible Tap Size: 3/4"-10; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Standard Wall; Drill Bit Size: 21/32; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Std Wall, 1/2"-13 Int Thrd Sz, 3/4"-10 Ext Thrd Sz (MPN EZ-329-8). Key specifications — Compatible Tap Size: 3/4"-10; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Standard Wall; Drill Bit Size: 21/32; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, #10-32 Int Thrd Sz, 5/16"-24 Ext Thrd Sz (MPN EZ-313-332). Key specifications — Compatible Tap Size: 5/16"-24; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Fine; Wall Type: Thin Wall; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, #10-32 Int Thrd Sz, 5/16"-24 Ext Thrd Sz (MPN EZ-313-332). Key specifications — Compatible Tap Size: 5/16"-24; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Fine; Wall Type: Thin Wall; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Std Wall, M10-1.25 Int Thrd Sz, 9/16"-12 Ext Thrd Sz (MPN EZ-653-10F). Key specifications — Compatible Tap Size: 9/16"-12; Internal Thread Fit: 6H; System of Measurement: Inch/Metric; Thread Type: Fine; Wall Type: Standard Wall; Drill Bit Size: 31/64; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Std Wall, M10-1.25 Int Thrd Sz, 9/16"-12 Ext Thrd Sz (MPN EZ-653-10F). Key specifications — Compatible Tap Size: 9/16"-12; Internal Thread Fit: 6H; System of Measurement: Inch/Metric; Thread Type: Fine; Wall Type: Standard Wall; Drill Bit Size: 31/64; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, 3/8"-16 Int Thrd Sz, 1/2"-13 Ext Thrd Sz (MPN EZ-310-6). Key specifications — Compatible Tap Size: 1/2"-13; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Thin Wall; Drill Bit Size: 29/64; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, 3/8"-16 Int Thrd Sz, 1/2"-13 Ext Thrd Sz (MPN EZ-310-6). Key specifications — Compatible Tap Size: 1/2"-13; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Thin Wall; Drill Bit Size: 29/64; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Heavy Wall, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz (MPN EZ-329-332IC). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Heavy Wall; Drill Bit Size: 5/16; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Heavy Wall, #10-32 Int Thrd Sz, 3/8"-16 Ext Thrd Sz (MPN EZ-329-332IC). Key specifications — Compatible Tap Size: 3/8"-16; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Coarse; Wall Type: Heavy Wall; Drill Bit Size: 5/16; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, M4-0.70 Int Thrd Sz, 5/16"-18 Ext Thrd Sz (MPN EZ-310-M4). Key specifications — Compatible Tap Size: 5/16"-18; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Coarse; Wall Type: Thin Wall; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, M4-0.70 Int Thrd Sz, 5/16"-18 Ext Thrd Sz (MPN EZ-310-M4). Key specifications — Compatible Tap Size: 5/16"-18; Internal Thread Fit: 2B; System of Measurement: Inch/Metric; Thread Type: Coarse; Wall Type: Thin Wall; External Thread Fit: 2A.
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, 5/16"-24 Int Thrd Sz, 7/16"-20 Ext Thrd Sz (MPN EZ-313-524). Key specifications — Compatible Tap Size: 7/16"-20; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Fine; Wall Type: Thin Wall; Drill Bit Size: 25/64; External Thread Fit: 2A.
APPROVED VENDOR
APPROVED VENDOR Self Locking Thread Insert: Thin Wall, 5/16"-24 Int Thrd Sz, 7/16"-20 Ext Thrd Sz (MPN EZ-313-524). Key specifications — Compatible Tap Size: 7/16"-20; Internal Thread Fit: 2B; System of Measurement: Inch; Thread Type: Fine; Wall Type: Thin Wall; Drill Bit Size: 25/64; External Thread Fit: 2A.