Shackles
Shackles Screw Pin D
Shackles Screw Pin D is a group of 22 IMPA-coded items (codes 230321–230351) under Shackles in the Rigging Equipment & General Deck Items section (IMPA 23). All of them are priced per piece. The names most often specify galvanised (11 of 22). The list runs through 11 metric sizes from 6 mm to 38 mm.
Buying guide
The D (dee) shackle with a screw pin is the general-purpose connector for joining chain, wire eyes, blocks and lifting points. The IMPA lines in this group are listed by size in millimetres with the safe working load in tonnes, in black (self-colour) or galvanised finish.
Shackles are raised by the bosun or chief officer for cargo gear, stores lifting, rigging and mooring work. Where a shackle forms part of lifting gear it is an accessory for lifting and must be marked and certified accordingly.[1]
How to specify it
State type (D, screw pin), nominal size, the SWL required, finish (black or galvanised), material grade if the job needs it, and quantity. Ask for the SWL marked on the body and a test certificate with the delivery. When replacing a shackle in cargo gear, the replacement must be of the correct type, size and SWL for its use.[2][1]
Order by SWL as well as size: the IMPA description carries the SWL for each size, and that is the figure an offer must match.
Rules and certificates
Each accessory for lifting must be clearly and legibly marked with its safe working load, and a certificate held for each test and thorough examination. Accessories for lifting exposed to deteriorating conditions are thoroughly examined at least every 6 months, or under an examination scheme.[1]
Shackles, links and rings are renewed when wear or damage is evident. All shackles in cargo gear should have their pins effectively secured or seized with wire. On a bosun’s chair riding a stay, the bow of the shackle, not the pin, rides on the wire, and the pin is seized.[2][1]
Questions buyers ask
- Does every shackle need a certificate?
- Shackles used as lifting accessories must be marked with their SWL and covered by a certificate of test and thorough examination. Ask the supplier for the batch certificate with the delivery.
- How often are lifting shackles examined?
- Under the UK regulations, accessories for lifting exposed to deteriorating conditions are thoroughly examined at least every 6 months, or under an examination scheme, and renewed when wear or damage is evident.
Sources
Published by Sherif Awad, founder of GeoMarineHub — in ship supply since 1990, a family business since 1981 (45 years). Last checked .
At a glance
Part of Rigging Equipment & General Deck Items (IMPA section 23): Shackles, turnbuckles, blocks, wire clips, thimbles, hooks, hatch-cover parts, ladders and deck gear.
It is one of 27 groups under Shackles; the others include Green Pin Sling Shackles Bow Shackles with Safety Bolt, Green Pins Standard Shackles, M Class Bow Shackles - BA with Flat Head Pin, M Class Bow Shackles - BB with Hexagon Head Bolt, M Class Bow Shackles - BC with Eye Bolt and 21 more.
Post the ones you need as a requirement and verified suppliers activated at your port bid on them — sealed, so nobody sees another bid.
- Items
- 22
- IMPA codes
- 230321–230351
- Priced
- per piece
- Materials
- galvanised
- Sizes
- 6 mm – 38 mm
Items
Also under Shackles
- Green Pin Sling Shackles Bow Shackles with Safety Bolt
- Green Pins Standard Shackles
- M Class Bow Shackles - BA with Flat Head Pin
- M Class Bow Shackles - BB with Hexagon Head Bolt
- M Class Bow Shackles - BC with Eye Bolt
- M Class Bow Shackles - BD with Eye Bolt
- M Class Straight Shackles - SA with Flat Head Pin
- M Class Straight Shackles - SB with Hexagon Head Bolt
- M Class Straight Shackles - SC with Eye Bolt
- M Class Straight Shackles - SD with Eye Bolt
- Shackles Bow BA
- Shackles Bow BB
Most requested sections