Time-Sert - helicoil alternative. Australian authorized importer of thread repair kit sizes in a complete range including LS engine & Gen 3, M11x1.5 metric Time-Sert 1115 for Toyota engine, spark-plug thread repair, BMW engine, Ford Engine & other special kits & sump plug repair. If you need to repair threads previously fixed with helical coil thread inserts or Time-Serts a second time you will need to use thick walled inserts - see Big-Sert and Loc-in-Sert pages in this website
INDEX to Time-Sert Information
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What are Time-Serts and what are they used for?
Time-Serts are called "thread inserts" and are thin walled threaded sleeves generally made of steel. They are as thin in section as the well known Helicoil variety of inserts. There is a screw thread profile on the inside and also on the outside and the "peak" or hill of the inside thread nests into the peak of the outside thread. This is how Time-Serts succeed in making the wall of their inserts extra thin.
Time-Serts are used for repairing stripped threads or in manufacturing to create stronger new threads in soft materials like aluminium or plastics. Because Time-Serts are so thin walled they take only a minimum amount of material around any hole needing to be repaired or inserted.
What tools do You need to be able use them?
You will need a special set of tools for each size of Time-Sert you want to use. You can buy all the tools you need with a starter supply of Time-Serts in a ready made kit (pictured at left). You can only fit one diameter and type of thread insert with each kit. Usually the kit contains (1) a drill (of the correct size to drill out the hole to be repaired or strengthened) - (2) a special tap to retap the hole to the right size for the Time-Sert - (3) a "counterbore" to cut a recessed lip which takes the flange of the Time-Sert - (4) an "insert driver" to screw the Time-Sert in and lock it in place and (5) a starter supply of Time-Serts (usually a quantity of 5).
How do You use the tools to fit a Time-Sert?
(1) (2) (3) (4) (5)
(1) Drill with the drill supplied in the kit.
(2) Counterbore the hole with the tool supplied. This makes a recessed lip
in the base material for the flange of the Time-Sert.
(3) Tap the hole with the special size tap supplied in the kit.
(4) Screw the insert in with the insert driver supplied until you have gone
right through the insert and rolled formed the inside bottom threads.
(5) The Time-Sert will now be in place seated below the surface in the lip
you made with the counterbore tool.
How do Time-Serts work?
First of all, to explain how Time-Serts work, you need to know that a Time-Sert has extra metal left in the bottom internal threads when it is made. This means the bottom inside threads are not fully formed. (You can see this inside the black ring in the picture at left).
The cross-sectioned picture on the right
illustrates how a Time-Sert works.
The yellow tool is the Time-Sert driver tool. __Insert Driver
It is a fluteless, roll forming tap. As it is fluteless, roll forming tap
screwed through the insert it roll forms
the bottom internal threads that had extra
metal left in them and locks the Time-Sert
into the "Base Material" by forcing the extra Time-Sert
metal in these threads outwards.
Bottom few threads Insert driver tap
with extra material are squeezes excess
roll formed as the insert metal out as it forms
driver is wound through the inside threads
Sparkplug hole Time-Sert thread repairs
Time-Serts are the ideal for Sparkplug thread repair and stripped sump plug threads.
LS engine, Gen3 engine, BMW engine, Ford engine, Toyota engine Plus many other head bolt thread repair & sump plug thread repair kit options.
You can also get Time-Serts in boxed ranges with multiple thread sizes of tools and inserts
Time-Sert produces convenient boxed kits containing ranges of thread sizes as follows:
METRIC COARSE #1 - M5x0.8, M6x1.0, M8x1.25, M10x1.5, M12x1.75 - Part # TS1000
METRIC COARSE # 2 - M5x0.8, M6x1.0, M8x1.25, M10x1.5, M12x1.5 - Part # TS1005
METRIC FINE #1 - M5x0.8, M6x1.0, M8x1.25, M10x1.25, M12x1.5 - Part # TS1001
METRIC FINE #2 - M5x0.8, M6x1.0, M8x1.25, M10x1.25, M12x1.25 - Part # TS1004
1/4” to 1/2” UNC - 1/4-20, 5/16-18, 3/8-16, 7/16-14, 1/2-13 - Part # TS0010
1/4” to 1/2” UNF - 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20 - Part # TS0020
Each boxed range kit comes with complete sets of 5 different, various sized fitting tools and 20 of
each of the corresponding size of inserts [100 inserts total in each kit].
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