Big-Sert Thread Repair Kits
Pear Tree Engineering 01942-715528

We accept Visa and Master Card


Wurth Big-Sert Inserts

BIG-SERTŪ is a heavy wall solid bushing, easy to install with positive placement.

BIG-SERTŪ gives increased load protection for critical use.

BIG-SERTŪ will repair oversize holes which have previously been repaired.

Bigsert oversized thread repair kits Shop 

Insert
METRIC
 
INSERTS
 
KIT SIZE
LENGTH
mm
PART
NO.
     
M5x0.8
7.6
10.0
55081
55083
     
M6x1.0
9.4
12.0
56101
56103
     
M8x1.25
11.7
16.2
18.0
 
58121
58123
58125
     
M10x1.0
9.0
15.0
50111
50113
     
M10x1.25
14.0
20.0
24.5
 
50121
50123
50125
     
M10x1.5
9.4
11.0

14.0

20.0
24.5
30.0
50150
50157
50151
50153
50155
50159
 
     
30.0
51125
     
M12x1.5
9.2
16.2

24.0
30.0
52150
52151
52153
52155
     
M12x1.75
12.0
16.2

24.0
30.0
52170 52171
52173
52175
     
M12x1.25
9.0
15.0

17.5
24.0
30.0
52120
52121
52122
52123
52125
     
Insert
INCH
KIT SIZE
INSERTS
 
LENGTH
INCHES
PART
NO.
   
10-32
.187
 
50324
   
1/4-20
.380
.500
54201
54203
   
1/4-28
.380
.500
54481
54483
   
5/16-18
.450
.620
55611
55613
   
5/16-24
.450
.620
55621
55623
   
3/8-16
.400
.520

.750
1.000
1.250
53810
53811
 53813
53815
53817
   
3/8-24
.520
.750
53821
53823
   
7/16-14
.600
.870
1.000
1.250
57611
57613
57615
57617
   
7/16-20
.600
.870
57621
57623
   
1/2-13
.480
.650

1.000
51210
51211
51213
   
1/2-20
.650
1.000
51221
51223
   
     
     
 
         
BIG-SERT INCH KITS
 
INSERT

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
7/16-20
37/64
.578
.634
.085
.634
1/2-13
41/64
.640
.701
.085
.701
1/2-20
41/64
.640
.701
.085
.701
           

 

BIG-SERT METRIC KITS
 
INSERT

DRILL

C.BORE

TAP

SIZE

DRILL
 
SIZE

MIN.
DIA

MIN.
DEPTH

MAJOR
DIA.

M5x0.8
D
.246
.290
.050
.290
M6x1.0
L
.290
.330
.055
.330
M8x1.25
13/32
.406
.474
.085
.474
M10x1.0
31/64
.484
.552
.085
.552
M10x1.25
31/64
.484
.552
.085
.552
M10x1.5
31/64
.484
.552
.085
.552
M11x1.25
37/64
.578
.634
.085
.634
M12x1.5
37/64
.578
.634
.085
.634
M12x1.75
37/64
.578
.634
.085
.634

 

 

Comparison Charts, Standard Metric and Imperial with Decimal and Fractional Equivalents

CONTACT US
 66, Thurlow,
Lowton, Warrington,
WA3-2QN
01942-665546
sales@threadrepairkits.co.uk

OFFICE HOURS
Mon, - Fri. 9:00 am  to  5:30 pm
Sat, 9:30 am  to  12:30 pm
Sunday CLOSED