Time-Serts Big Sert
Oversized thread repair kits and inserts
These kits are used for threads, which have been previously repaired.
BIG-SERT® IS A HEAVY WALL SOLID BUSHING. EASY TO INSTALL WITH POSITIVE PLACEMENT.
BIG-SERT® GIVES INCREASED LOAD PROTECTION FOR CRITICAL USE.
BIG-SERT® WILL REPAIR OVERSIZE HOLES WHICH HAVE PREVIOUSLY BEEN REPAIRED.
NOTE: Bottom few internal threads are incomplete.
The insert driver (Roll form tap) seats the insert and completes the bottom threads. This pushes the pin out to contact the threaded hole. Back out of the insert is prevented by the cam lock effect of the pin.
| INCH |
| INSERTS |
DRILL |
C.BORE |
TAP |
| SIZE |
DRILL |
SIZE |
MIN.
DIA. |
MIN.
DEPTH |
MAJOR
DIA. |
| 1/4-20 |
7.8MM |
.307 |
.355 |
.050 |
.359 |
| 1/4-28 |
L |
.290 |
.330 |
.055 |
.330 |
| 5/16-18 |
13/32 |
.406 |
.474 |
.085 |
.474 |
| 5/16-24 |
13/32 |
.406 |
.474 |
.085 |
.474 |
| 3/8-16 |
31/64 |
.484 |
.552 |
.085 |
.552 |
| 3/8-24 |
31/64 |
.484 |
.552 |
.085 |
.552 |
| 7/16-14 |
37/64 |
.578 |
.634 |
.085 |
.634 |
| 7/16-24 |
37/64 |
.578 |
.634 |
.085 |
.634 |
| 1/2-13 |
41/64 |
.640 |
.701 |
.085 |
.701 |
| 1/2-20 |
41/64 |
.640 |
.701 |
.085 |
.701 |
| METRIC |
| M5X0.8 |
D |
.246 |
.290 |
.050 |
.290 |
| M6X1.0 |
L |
.290 |
.330 |
.085 |
.330 |
| M8X1.25 |
13/32 |
.406 |
.474 |
.085 |
.474 |
| M10X1.25 |
31/64 |
.484 |
.552 |
.085 |
.552 |
| M10X1.5 |
31/64 |
.484 |
.552 |
.085 |
.552 |
| M12X1.5 |
37/64 |
.578 |
.634 |
.085 |
.634 |
| M12X1.75 |
37/64 |
.578 |
.634 |
.085 |
.634 |
| KIT SIZE |
PART NO. |
INSERTS |
| LENGTH |
PART NO. |
| INCHES |
MM |
| 1/4-20 |
5420 |
.380
.500 |
9.4
12.7 |
54201
54203 |
| 1/4-28 |
5448 |
.380
.500 |
9.4
12.7 |
54481
54483 |
| 5/16-18 |
5561 |
.450
.620 |
11.4
15.7 |
55611
55613 |
| 5/16-24 |
5562 |
.450
.620 |
11.4
15.7 |
55621
55623 |
| 3/8-16 |
5381 |
.520
.750 |
13.2
19.0 |
53811
53813 |
| 3/8-24 |
5382 |
.520
750 |
13.2
19.0 |
53821
53823 |
| 7/16-14 |
5761 |
.600
.870 |
15.2
22.0 |
57611
57613 |
| 7/16-20 |
5762 |
.600
.870 |
15.2
22.0 |
57621
57623 |
| 1/2-13 |
5121 |
.650
1.000 |
16.5
25.4 |
51211
51213 |
| 1/2-20 |
5122 |
.650
1.000 |
16.5
25.4 |
51221
51223 |
KIT CONTENTS Drill, Counterbore, Tap, Insert driver & Five (5) steel inserts.
**Bold faced lengths are the inserts supplied in kits**
| KIT SIZE |
PART NO. |
INSERTS |
| LENGTH |
PART NO. |
| MM |
INCHES |
| M6x1.0 |
5610 |
9.4
12.0 |
.300
.394 |
56101
56103 |
| M8x1.25 |
5812 |
11.7
16.2 |
.370
.470 |
58121
58123 |
| M10x1.25 |
5012 |
14.0
20.0 |
.460
.640 |
50121
50123 |
| M10x1.5 |
5015 |
14.0
20.0
24.5 |
.550
.800
.960 |
50151
50153
50155 |
| M12x1.5 |
5215 |
16.2
24.0 |
.640
.950 |
52151
52153 |
| M12x1.75 |
5217 |
16.2
24.0 |
.640
.950 |
52171
52173 |
| KIT |
INSERTS |
WASHER SEAT |
TAPERED SEAT |
| LENGTH |
PART NO. |
PART NO. |
| INCHES |
MM |
| 5141 |
.370
.430 |
9.4
11.0 |
51401
51403 |
N/A
51453 |
5141E
Extended |
.600
.660 |
15.0
16.8 |
51405
51407 |
51455
51457 |
| KIT |
FORD TRITON |
WASHER SEAT |
TAPERED SEAT |
| 5553 |
.660 |
16.8 |
N/A |
51459 |
| KIT |
FORD ZTECH |
Z-TECH |
| 5554 |
.950 |
24.0 |
N/A |
51460 |
The outside of the Big Sert Insert is M18X1.5.
The stripped hole must be no larger than 16.3MM or .640 inches.
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