What is the difference between t55 and t20

T - ground twist drills, 1 - 13 mm A - boring bits, 3 - 30,5 mm A - stepped bits, 4 - 40,5 mm SJ - short drill bits for straight chucks Taps and dies - standard taps, M3 - M20 RN - Repair kits - adjustable tap wrenches - die stocks Threading and tapping tool sets Holesaws A - variable pitch holesaws, 19 - 68 mm A. J1 - set of 3 stainless steel scrapers J1 - set of 3 flexible spatulas Metal shears - scroll shears - panel shears - general-purpose shears A - two-hand shears A - right-cut universal scroll shears - compound scroll shears - "Aircraft" shears A - nibblers Bolt croppers BF - axial cut bolt croppers B - axial cut tubular arm bolt croppers RB - flush-cut bolt croppers LB - replacement blades for series B with screws A - mini croppers Cable cutters - copper and aluminium cable cutters - ratchet cable cutters - manual 10 mm dia.

D - safety knife with retractable blade R - retractable utility knife with interchangeable blades S - cutters with snap-off blades Seria - spare blades for knives LE - thumbwheel knife F - lock-back knife with bi-material handle - twin-blade electricians knife with plastic handle - twin-blade electricians knife with wood handle B - electricians knife with wire stripper T - punches, 3 - 50 mm A. C - scriber A. M - accessories for punches and calipers Punch kits Pullers Mechanical 3 - leg pullers U.

J - single tapered drill bits for pullers J - set of stud pullers, right-hand pitch - drill bits and pullers for stud pulling, right or left-hand pitch - set of stud pullers, right or left-hand pitch A - roller-type stud drivers - multi-diameter, mm B - roller-type stud drivers - single-diameter, mm B. DGF - grinders, 6 mm Seria V. TBF - pneumatic tire grinder V. PF - windshield cutter CAD.

PF - windshield cutter blades V. C - Battery impact wrenches CL3. P - cordless drills CL3. VSE - insulated gloves BC. VSE - safety overgloves BC. VSE - insulated mats BC. E - worksite-maintenance fixed vices - swivel adjuster vices SR - non sparking metric combination wrenches, 6 - 70 mm SR - non sparking adjustable wrenches, 18 - 55 mm SR - non sparking metric impact ring wrenches, 17 - mm SR - non sparking metric impact open end wrenches, 17 - mm SR - non sparking metric angled socket wrenches, 6 - 41 mm ADF pliers SR - non sparking multigrip pliers SR - non sparking cutting pliers SR - non sparking motorist pliers SR - non sparking gas pliers SR - non sparking 1" metric point sockets, 22 - 80 mm SKM.

SR - non sparking screwdriver for slotted heads 3 - 13 mm ANP. SR - non sparking metric keys 1,5 - 41 mm 82H. SR - non sparking german style club hammer H. SR - non sparking sledgehammers H. SR - non sparking ball pein hammers WF. SR - non sparking wedges SR - non sparking chisels SR - non sparking chain pipework wrenches Seria A. SR - non sparking monkey wrenches A. SR - non sparking swedish model pipework wrenches VH. Wiring tools - sleeving pliers B - plastic cable-tie pliers - automatic plastic cable-tie pliers CL3.

E - anti-static digital welder 68 watts B. BW - bi-watt iron for electronic B. H - gas soldering iron, 75 W - desoldering pumps B - inspection creepers DTS. D2 - non-magnetic wing cover with suction fasteners D. BTI - heavy duty series bottle jacks DL. BTA - standard series bottle jacks CR. R - Hydraulic wheel lift Electric and hybrid vehicles support CM. B47 - maintenance tools for the engine lubrication system D.

J - fuel gauge wrench DM. C - clamp pliers X. FR2 - diesel filter fitting and removal tool DM. F - fast fit fuel pliers DM. MUB - spring clamp pliers DM. TU - hose removal pliers DM. B - piston ring compressors - piston ring pliers D. C - PSA exhaust collar pliers - feeler gauges D. DFD - disc brake module DF. S - brake-spring pliers D. DFT - drum brake servicing module DF.

ST - stepped bits, 4 - 38 mm VFA - filing burrs Hex drive fastenings are very well known. A hexagonal socket in the head of a screw mates with a hexagonal tool Allen wrench to tighten or undo the screw. While this style of drive system allows high torque transmission it is prone to early failure.

When rotational pressure is applied to the tool this is transferred to the points of contact between the hex tool and the drive socket in the screw head.

This localised pressure tends to round off the tool resulting in damage to both the tool and the fastening. Drivers self align with drive sockets due to the sloping sides of the drive sockets. But driving forces act to push the driver out of the socket camout due to these sloping sides. This means that additional pressure is required to keep the driver in the socket which has an impact on wear and tear as well as worker fatigue.

Poor tool engagement reduces torque transmission and can result in concentrated stress which will potentially damage the driver or the fastening.

Slotted screw heads which accept flat-bladed screwdriver bits are very familiar. This style of screw and driver is not appropriate for automated assembly as tool alignment is not automatic.

Key failings with the slotted drive system include tool misalignment due to the slot head being open at both ends. This will damage the driver bit and the fastening.

Torque transmission is limited due to tool misalignment in the slot. The nature of this design makes it susceptible to slippage and the damage that this can cause.

The original Torx specification uses a six point star shaped socket recess in screw heads with a matching Torx screwdriver bit. A key advantage of the Torx system is that is allows higher torque transmission than other drive systems enabling fastenings to be tighter and therefore more secure. The straight sides of the Torx six sided star shaped socket helps prevent camout and require lower end-load than cruciform systems.

But wide tolerances can present a loose fit between the driver tool and the screw head socket and the 15 degree drive angle can reduce the tool bit life. As shown, Torx clearly outperforms other drive systems when considering factors of importance in production environments.

But Torx is far from perfect which is what led to the development of Torx Plus. Torx Plus addresses the limitations of the existing Torx system to provide optimal torque transfer and maximises tool lifetime.

The Torx Plus Drive system was developed to improve assembly line performance. Alignment difficulties between drive bits and recesses can slow down production lines. The Torx Autosert feature guides the driver bit accurately into the recess creating a self-centering engagement action. Torx Plus is designed for high torque transmission.

This means that higher torques can be used to securely tighten fasteners without incurring additional wear and tear on the tools. High torque capability is also very important in service situations where corrosion may increase the torque required to loosen a fastening. The tamper resistant Torx Plus Drive variant security Torx uses a pentalobular five point design with a solid security pin at the centre of the recess.

All of the Torx Plus benefits are included in the tamper resistant version along with additional security provided by the 5 lobe design with a central security pin. Without doubt, Torx plus provides valuable improvements that help ensure that production lines run smoothly and efficiently while delivering tangible savings.

And the highly secure Tamper Resistant Torx Plus drive design provides robust and reliable security. If you need any help selecting the best security fasteners for your needs - please give us a call on - we are always happy to help. So buy now with confidence - and join the thousands of happy customers we have helped over the last 20 years Just call us on Web Design by Worldwide Webdesign. Need Help or Advice? Call the Insight team Can't see what you want or need help? Call us on