Camlock Fittings

Camlock Fittings

Camlock fittings — also called cam and groove couplings — are the tool-free quick-connect system used across Australian industry to join hoses, tanks, pumps and pipework for fluid transfer. A pair of spring-loaded cam arms on the female coupler locks over the groove of the male adaptor in seconds, giving a secure, leak-tight connection without spanners or thread engagement — then releases just as fast when the job's done. Our Camlock Fittings Guide: Types A–F, Materials, Pressure & Selection walks through the key differences if you're comparing options.

AIMS Industrial stocks close to 100 camlock and cam & groove fittings from AAP and Dixon, covering the full standard type range (A through F, plus DC dust caps and DP dust plugs), the Type AA spool adaptor, and material options spanning polypropylene, aluminium, stainless steel, brass, bronze and glass-reinforced nylon (Nyglass). Whether you need a single replacement coupler or a bulk fit-out for a new fluid transfer line, our Sydney warehouse ships fast across Australia.

Camlock Types — Quick Reference

Camlock types explained

Type A is a male adaptor with a female BSP or NPT thread machined into the back — screw it onto a threaded pump or tank outlet and it presents a male camlock face ready for a Type C or Type D coupler. Type B is the reverse: a female coupler with a male thread, used where the threaded fitting is the inlet rather than the outlet. Type C is a female coupler with a hose shank (hose tail) — by far the most-ordered configuration, as it's what goes on the end of a length of hose. Type D is a female coupler with a female thread on the back, used to camlock into an in-line threaded joint. Type E is a male adaptor with a hose shank, so a Type C on one hose and a Type E on another lets you join two hose ends directly. Type F is a male adaptor with a male thread — handy for adapting a threaded male outlet so it can take a female coupler.

The Type AA spool adaptor is male on both ends, letting you connect two female couplers back-to-back — useful in manifolds, tanker loading racks and anywhere two hose lines need to be joined without an intervening length of hose. DC dust caps and DP dust plugs aren't a connection type at all — they seal off an unused adaptor or coupler to keep contaminants out and protect the cam arms and seal face when a line isn't in use.

Material options

Camlock fittings live or die on whether the material suits the fluid, the environment and the mechanical duty. AIMS stocks:

• Polypropylene (PP) — lightweight and chemical-resistant, the standard choice for agricultural chemicals, fertilisers and mild acid or alkali transfer where metal fittings would corrode.
• Aluminium — the general workhorse material: lightweight, cost-effective and suited to fuel, oil, water and general industrial fluid transfer, including irrigation and tanker work. A conductive aluminium option is also stocked for fuel and solvent transfer where static dissipation matters.
• Stainless steel (304/316) — used where corrosion resistance, hygiene or marine duty is required. 316 is the standard for food-grade, pharmaceutical, chemical and coastal or offshore applications; 304 appears on some accessory items such as strainers and pull rings.
• Brass — a solid all-rounder for water and general workshop service, also supplied as replacement cam handles, rings and pins for rebuilding worn couplings.
• Bronze (sand cast) — corrosion-resistant and non-sparking, typically specified for marine service or where ferrous fittings aren't suitable.
• Nyglass (glass-reinforced nylon) — a tougher, more chemical-resistant alternative to standard polypropylene, stocked across AAP and Dixon adaptors, couplers, caps and plugs.

Carbon steel also appears in the range, but only on accessory hardware — cam arm clips, pull rings and lanyards — not on the coupling body itself.

Sizing

Across the AAP and Dixon ranges, AIMS stocks camlock fittings from 15 mm (1/2") through to 150 mm (6"), covering the sizes used across most Australian industrial, agricultural and tanker fluid-transfer setups. Polypropylene couplers top out around 75 mm (3"); aluminium and stainless steel extend further, up to 150 mm (6") on select types. AAP fittings are sized in imperial BSP/NPT increments (1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 6"); Dixon's cam & groove range is sized in metric equivalents. Always match size to size, not just type to type — a Type C and Type E only mate correctly when they're the same nominal size.

Standards and interchangeability

There's no single mandatory Australian Standard covering camlock fittings. In practice, the dimensions that make Type A–F couplers interchangeable between manufacturers worldwide trace back to a shared industry lineage: the cam and groove design originated from the US federal specification (originally MIL-C-27487, now A-A-59326), and the equivalent European dimensional reference is EN 14420-7, commonly cited alongside the older DIN 2828. Reputable manufacturers — AAP and Dixon included — build their standard Type A–F ranges to these shared dimensions, which is why couplers of the same type and size generally seat correctly regardless of brand. If your application has a specific compliance requirement — food contact, potable water, or a particular material certification — check the specification sheet for that exact product rather than assuming compliance from the type designation alone; our team can pull the relevant documentation for you.

Applications and industries

• Agriculture and irrigation — polypropylene and aluminium camlocks for chemical spraying, fertigation and bulk water transfer between tanks, pumps and irrigation lines.
• Chemical transfer — polypropylene or stainless steel, matched to the specific chemical, for drum and IBC decanting and process transfer.
• Fuel and petroleum — aluminium camlocks, including conductive aluminium where static build-up is a risk, for tanker loading, bulk fuel transfer and refuelling setups.
• Food and beverage processing — 316 stainless steel for hygienic, easy-to-clean, corrosion-resistant connections in food-grade transfer lines.
• Marine and coastal — stainless steel or bronze for salt-air and immersion service.
• Mining, dewatering and bulk transfer — aluminium and stainless couplers for pump discharge lines, water transfer and general site fluid handling.

Beyond standard camlocks

Alongside the standard Type A–F cam & groove range, AIMS also stocks a number of related Dixon lines worth knowing about if you're specifying fluid-transfer hardware: Boss-Lock couplings (Dixon's positive-locking cam & groove variant, including notched-ferrule and EZ Boss-Lock configurations, plus lanyards and retaining clips), API couplings (drop adaptors and dust caps built to the API standard used in road tanker and bulk fuel loading), a Fluidizer hopper saver for dry bulk pneumatic tanker unloading, and a stainless steel witches hat strainer for filtering transfer lines. We also carry replacement cam handles, rings and pins in brass and stainless steel, so a worn coupling can be rebuilt rather than replaced outright.

Brands stocked

AAP supplies the core polypropylene, aluminium and stainless steel Type A–F range in imperial BSP/NPT sizing. Dixon extends the range further — aluminium, brass, bronze, stainless steel and Nyglass camlocks in metric sizing, the 68° groove series for compatibility with international tanker systems, Boss-Lock and API couplings, and spare parts for maintaining fittings already in service.

Companion ranges

• Hose Fittings & Couplings — barbed, crimp and threaded hose fittings for every hose type
• Hoses — industrial, chemical, water and fuel transfer hose to pair with your camlocks
• Hose Clamps — worm-drive and heavy-duty clamps for securing hose to camlock shanks
• Gaskets — camlock and flange gaskets in EPDM, Buna-N and other elastomers
• Pipe Fittings — threaded and welded pipe fittings for permanent connections
• Pipes, Tubes & Fittings — the broader pipe and tube range

Order camlock fittings from AIMS

Need help matching a coupler to an existing line, or specifying a full fluid-transfer setup from scratch? Call our team on (02) 9773 0122, get in touch via our contact page, or request a quote for bulk or project pricing. AIMS Industrial has supplied Australian tradespeople and industry since 1988, with fast dispatch from our Sydney warehouse.

Frequently asked questions

What is a camlock fitting used for?

Camlock (cam and groove) fittings are used to make and break fluid-transfer connections quickly, without tools — connecting hoses to tanks, pumps, drums and IBCs. They're standard equipment wherever a line needs to be connected and disconnected regularly, such as tanker loading, chemical decanting, irrigation and workshop fluid transfer.

What's the difference between a Type C and Type D camlock fitting?

Both are female couplers, but they connect to different things on the back end. A Type C has a hose shank, so it's fitted to the end of a hose. A Type D has a female thread, so it screws directly onto a threaded male fitting instead of a hose. Get these mixed up and the coupler won't connect the way you expect.

Are AAP and Dixon camlock fittings interchangeable?

Generally yes — both brands build their standard Type A–F range to the same widely used cam and groove dimensions, so a given type and size from either brand will typically mate correctly. The exception is Dixon's 68° groove series, engineered for compatibility with certain international tanker systems — check the groove profile before mixing that series with standard-profile fittings.

What common problems come up with camlock fittings?

The usual culprits are worn or missing cam arm pins and rings (the coupling won't lock securely), perished or incorrect seals (leaks at the joint), thread damage on threaded types from cross-threading, and corrosion or chemical attack when the wrong material has been used for the fluid. Most of these are fixed with replacement seals or cam hardware rather than a whole new fitting.

Aluminium, brass, stainless or polypropylene — which material do I need?

Match the material to the fluid and the environment. Polypropylene suits chemicals, fertilisers and mild acids. Aluminium is the general-purpose choice for fuel, oil and water. Stainless steel 316 is for food-grade, pharmaceutical, chemical and marine service. Brass and bronze suit water and general workshop use, with bronze preferred where corrosion resistance or non-sparking properties matter. If you're unsure, our team can help you match material to application.

What sizes do AIMS camlock fittings come in?

From 15 mm (1/2") up to 150 mm (6") across the AAP and Dixon ranges, in both imperial BSP/NPT and metric sizing depending on the brand and type. Not every size is available in every type and material — check the specific product page for the sizes stocked.

What standard are camlock fittings made to?

There's no single Australian Standard specific to camlock fittings. Reputable manufacturers build their Type A–F ranges to the shared dimensional conventions that trace back to the US federal spec (A-A-59326, formerly MIL-C-27487) and the European EN 14420-7 / DIN 2828 references — which is why fittings of the same type and size are generally interchangeable between brands. For a specific compliance requirement, check the product's own specification sheet.

Can I use aluminium camlock fittings with any chemical?

No. Aluminium camlocks shouldn't be used with concentrated oxidising acids or hydrofluoric acid, both of which will attack the metal. For those chemicals, use a polypropylene or stainless steel fitting instead, and check chemical compatibility before committing to a material.

What is a Type AA spool adaptor used for?

It's a male-to-male fitting used to join two female couplers back-to-back — for example, connecting two hose ends directly, or linking sections of a manifold or tanker loading system without running a length of hose between them.

Can worn camlock fittings be repaired instead of replaced?

Often, yes. AIMS stocks replacement cam handles, rings and pins in brass and stainless steel, which let you rebuild a coupling that's lost its lock or developed play in the cam mechanism, rather than replacing the entire fitting.

What pressure are camlock fittings rated for?

It varies by size, material and manufacturer, and generally decreases as size increases. Check the specification sheet for the exact fitting you're using rather than assuming a rating — for higher-pressure applications, a threaded or flanged connection may be a better fit than a camlock.

Do you stock Dixon's Boss-Lock and API couplings as well as standard camlocks?

Yes. Alongside the standard Type A–F cam & groove range, AIMS stocks Dixon Boss-Lock positive-locking couplings, API drop adaptors and dust caps for tanker loading, a Fluidizer hopper saver, and a stainless witches hat strainer. Get in touch if you're not sure which of these suits your setup.