A range of four general purpose Irwin engineer’s G-clamps which have smooth running screw threads with rotatable captive pads on the lower clamping face. These clamps are finished in stove enamelled blue.

G clamps are a general purpose clamping tool which is ideal for DIY enthusiasts and can be used for many applications in both woodworking and metalworking.

G Clamps or C clamps are the simplest models designed to hold objects in place and prevent any movement. These hand tools have two jaws. The upper edge of the ’G’ acts as one jaw and a threaded screw which comes through a hole at the bottom provides the other jaw for clamping workpieces. Due to their simple build and small size they can be used almost anywhere. They are ideal for woodworking or welding.

You should always use a G clamp which is a suitable size to hold your workpiece, if not there is a chance of bending the frame and damaging the screw. The size can be measured by its jaw opening (how far the mouth of the jaws can open) and the depth. These G clamps from Irwin area available in 4 sizes to choose from:

Irwin Record 119 Series
The slim section of these medium duty clamps are ideal when space is limited and are ideal for smaller work:
542-431 – 75 x 50 mm / 3inch
542-447 – 50 x 25mm / 2inch

Irwin Record 120 Series
542-425 – 100 x 60mm / 4inch
602-319 – 150 x 80mm / 6inch

General purpose G clamps
542-447 and 542-431 have dropped forged steel frames – provides strength and rigidity
542-425 and 602-319 have cast steel frames
High quality steel lead screws
Finished in blue enamel
Suitable for both wood and metalworking applications
Pads create friction and reduce marking on workpiece
Adjustable steel swivel shoe – great for clamping uneven surfaces

Clamps are tools designed to hold and secure two objects tightly together and to prevent unwanted movement while e.g. clamping/glueing, holding work for sawing/drilling, and positioning work for fastening.

Clamps are widely used by:
• Carpenters
• Mechanics
• Plumbers
• Electricians
• Constructors
• Builders
• Architects

FAQs:

Are G Clamps good for woodworking?
Yes, G Clamps are a popular type of clamp that suits many applications. They are ideal for woodworking as they can be easily adjusted and provide a solid and secure grip.

Can these clamps be used as spreaders?
No, G Clamps cannot be used as spreaders. For clamps that can be easily transformed from clamps into spreaders with just one turn of the quick-change screw please see the XP series e.g. 879-3000 or 123-0237