Silver metal oval carabiner with screw lock gate

Spring Snap Hooks and Quick Links

Straight Snap Hook W/Screw

A straight spring snap hook with a screw thread and locking mechanism, made from carbon steel, stainless steel 304 or 316, or zinc alloy. It provides a secure, quick-connect fitting for rigging systems, with sizes from 5mm to 11mm diameter and lengths from 50mm to 120mm. The screw pin locks in place under load, preventing accidental opening during use.

Size: From dia 5mm-11mm
Material: Carbon Steel/SS304/SS316 Surface: Galvanized/Oxide/Spray paint
Packing: Cartons + Pallets
Catalogue Family: Spring Snap Hooks and Quick Links
Certificates: EN 10204 3.1 material test certificate on request

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CAD files are supplied on request via WhatsApp or email rather than published for open download.

Key Benefits

What Straight Snap Hook W Gives You

Screw thread pin locks securely under load, reducing the risk of accidental opening during dynamic rigging
Straight body design allows for clean line alignment and reduces bending stress on ropes and cables
Available in carbon steel, stainless steel 304, stainless steel 316, and zinc alloy for corrosion resistance and strength
Galvanized, oxide, or spray paint finishes provide protection in marine and outdoor environments

Quick connection and disconnection without tools, ideal for temporary or repetitive rigging setups
Standardized sizes from 5mm to 11mm diameter with matching length and width dimensions for consistent fit
Can be used with ropes, cords, chains, and other rigging components in a single system

Application Scenarios

Where Straight Snap Hook W Is Used

Marine rigging on boats and offshore platforms where corrosion resistance and secure connection are critical
Industrial lifting and load securing where quick attachment and release are needed during shift changes
Temporary rigging setups in construction and infrastructure projects requiring fast assembly

Cargo tie-down systems on trucks and trailers using ratchet straps or webbing with a secure anchor point
Equipment handling in ports and logistics hubs where multiple connections are made and broken daily
Rigging systems in mining and energy projects where frequent reconfiguration is required

Who It Is For

Buyers This Product Is Built For

Marine equipment suppliers building rigging kits for boats and offshore vessels
Logistics and transport companies specifying secure tie-down hardware for freight
Construction firms needing fast-connect rigging for temporary hoisting and bracing

Rigging distributors carrying a snap hook range who need multiple materials and finishes
Industrial maintenance teams requiring reliable, repeatable connection hardware

Problems It Solves

Problems This Product Removes

Accidental opening of a snap hook during load transfer due to loose or unsecured pin
Inconsistent connection strength when using non-locking or friction-based hooks
Corrosion damage on hooks used in saltwater or humid environments

Need to carry multiple types of connectors because a single hook cannot handle different materials
Time lost during rigging setup due to the need for tools or complex assembly
Lack of traceability or material proof when sourcing from multiple small suppliers

Technical Features

Straight body with screw thread pin and locking nut for secure closure
Drop-forged or machined body in carbon steel, stainless steel 304, stainless steel 316, or zinc alloy
Screw pin with thread engagement to prevent accidental disengagement
Standardized dimensions: diameter (D), length (L), length to pin (L1), width (B), and shank thickness (S)

Working load limit based on material and size, with traceability marking on the body
Available in galvanized, oxide, or spray paint surface finishes
Designed for use with ropes, cords, chains, and other rigging components

Specifications

Straight Snap Hook W Specifications

Values published in the Kailipu catalogue for this item. Anything not listed is available on request.

Size Range	5mm to 11mm diameter
Material	Carbon steel, stainless steel 304, stainless steel 316, zinc alloy
Surface Finish	Galvanized, oxide, spray paint
Pin Type	Screw thread with locking nut
Dimensions	5X50: D 5 L 50 L1 40 B 25 S 9 mm; 6X60: D 6 L 60 L1 48 B 30 S 11 mm; 8X80: D 8 L 80 L1 64 B 40 S 13 mm; 10X100: D 10 L 100 L1 80 B 50 S 16 mm; 11X120: D 11 L 120 L1 98 B 58 S 21 mm
Working Load Limit	Based on material and size, stamped on body

Materials

Materials And Finishes

Carbon steel body for high strength and cost efficiency
Stainless steel 304 and 316 for corrosion resistance in marine and harsh environments
Zinc alloy for lightweight and moderate strength applications

Galvanized coating to resist rust and oxidation
Oxide or spray paint finish for additional surface protection and visual identification

Manufacturing Process

How This Product Is Made

1Material selection based on customer specification and application

2Cutting and forming of the hook body and pin

3Machining of the screw thread and pin hole

4Assembly of the screw pin and locking nut

5Surface treatment including galvanizing, oxide coating, or spray painting

6Stamping of working load limit and material grade on the body

7Inspection and packing for shipment

Quality Control

Quality Control On Every Batch

Proof load testing on production batches before release
Dimensional tolerance check against published size table
Breaking strength validation to confirm design factor

Visual inspection for surface defects, thread integrity, and finish quality
Material Test Certificate to EN 10204 3.1 issued with the order
Third-party inspection accepted at warehouse before shipment

Customisation

Customisation Options

Custom tonnage stamping on the body for traceability
Private label and OEM marking available
Custom surface finish including galvanizing, oxide, or spray paint

Custom sizes and dimensions built to a supplied drawing
Custom packing configuration for cartons and pallets

Compare

How It Compares With The Alternatives

An honest read on where this pattern wins and where another one would serve you better.

Alternative	Honest Trade Off
Non-locking spring hook	The screw pin version prevents accidental opening under load, while a non-locking hook relies on friction and can open during dynamic movement
Screw pin with no nut	The locking nut ensures the screw stays in place under vibration, whereas a nutless version may loosen over time
Carabiner with gate	The straight snap hook has a simpler, more compact design for linear pull, while a carabiner gate is better for multi-directional loading and quick release
Rapid link	The snap hook is lighter and easier to use in tight spaces, but a rapid link offers higher strength and is better for high-cycle applications

Use Guide

How To Use And Inspect Straight Snap Hook W

Verify the stamped working load limit matches the expected load, not the equipment rating
Ensure the screw pin is fully tightened and the locking nut is secure before applying load
Inspect the thread and pin for wear or deformation before each use
Do not exceed the maximum diameter or length specified for the material type
Avoid side loading the hook; keep the pull aligned with the straight body
Retire the hook if the body shows deformation, the thread is stripped, or the marking is illegible