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L Series Stitching Pin Products
L4 Series Stitching Pins
The L4 stitching pins are made of both steel and aluminum. Both the L4 and C1 stitching pins use a tap drill size of wire 29. L4 and C1 also share a lot of other tooling. The L4 pins are used in thin walls, tight spots, hardened cast iron and many applications where their small size is helpful. Cracks in aluminum cylinder heads are usually repaired with the L4 aluminum pins. Because of their extra fine standard threads, you can tap threads for L4 pins into the side of hard seat inserts and in between seats. These pins create a small amount of spreading pressure.
Specifications:
| Thread diameter = 0.170" |
Shoulder diameter = 0.185" |
| Tap drill = 0.136" |
Pins per inch of repair = 7 |
Steel Series L4 Stitching Pins - 1/4 in thread
L4A-25
L4A-50
L4A-100
L4A-250
L4A-500
L4A-1000
L4A-2500
L4A-5000
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Steel Series L4 Stitching Pins - 1/2 in thread
L4B-25
L4B-50
L4B-100
L4B-250
L4B-500
L4B-1000
L4B-2500
L4B-5000
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Aluminium L4 Stitching Pins - 1/4 in thread
L4AL-25
L4AL-50
L4AL-100
L4AL-250
L4AL-500
L4AL-1000
L4AL-2500
L4AL-5000
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Aluminium L4 Stitching Pins - 1/2 in thread
L4BL-25
L4BL-50
L4BL-100
L4BL-250
L4BL-500
L4BL-1000
L4BL-2500
L4BL-5000
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L6 Series Stitching Pins
The L6 stitching pins are made of both steel and aluminum. Both the L6 and C2F stitching pins use a tap drill size of wire 7. L6 and C2F also share a lot of other tooling. The L6 pins are very popular in many applications where only sealing a crack is required. Most automotive cylinder heads with cracks in the seat area can be repaired with L6 pins. Simple freeze cracks on engine blocks where the crack length is less than 4" and cracks that are not on inside or outside corners are often repaired with L6 pins. L6 pins generate more spreading pressure than the smaller pins in this series.
Specifications:
| Thread diameter = 0.248" |
Shoulder diameter = 0.268" |
| Tap drill = 0.201" |
Pins per inch of repair = 5 |
Steel Series L6 Stitching Pins - 1/4 in thread
L6AS-25
L6AS-50
L6AS-100
L6AS-250
L6AS-500
L6AS-1000
L6AS-2500
L6AS-5000
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Steel Series L6 Stitching Pins - 3/8 in thread
L6A-25
L6A-50
L6A-100
L6A-250
L6A-500
L6A-1000
L6A-2500
L6A-5000
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Steel Series L6 Stitching Pins - 5/8 in thread
L6B-25
L6B-50
L6B-100
L6B-250
L6B-500
L6B-1000
L6B-2500
L6B-5000
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Steel Series L6 Stitching Pins - 1 in thread
L6C-25
L6C-50
L6C-100
L6C-250
L6C-500
L6C-1000
L6C-2500
L6C-5000
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Aluminium L6 Stitching Pins - 3/8 in thread
L6AL-25
L6AL-50
L6AL-100
L6AL-250
L6AL-500
L6AL-1000
L6AL-2500
L6AL-5000
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L8 Series Stitching Pins
The L8 stitching pins are made of steel. The L8 pins use a letter L tap drill. The L8 pins are the largest in the L Series group. These pins create significant spreading pressure when tightened. Applications include large diesel heads, blocks and other industrial castings. The L8 pins are often used to plug holes or when a larger pin than L6 is needed.
Specifications:
| Thread diameter = 0.326" |
Shoulder diameter = 0.348" |
| Tap drill = 0.290" |
Pins per inch of repair = 4 |
Steel Series L8 Stitching Pins - 1/4 in thread
L8AS-25
L8AS-50
L8AS-100
L8AS-250
L8AS-500
L8AS-1000
L8AS-2500
L8AS-5000
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Steel Series L8 Stitching Pins - 1/2 in thread
L8A-25
L8A-50
L8A-100
L8A-250
L8A-500
L8A-1000
L8A-2500
L8A-5000
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Steel Series L8 Stitching Pins - 1 in thread
L8B-25
L8B-50
L8B-100
L8B-250
L8B-500
L8B-1000
L8B-2500
L8B-5000
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It’s not a crack free world.....
You can always depend on LOCK-N-STITCH® …………… . |
