K-LOCK NUTS

K-LOCK NUTS (KEPS)

Nominal Diamet &
Thread Size
BASIC
Across
Flats
F
C
H
I
ACROSS
FLATS
ACROSS
CORNERS
NUT
THICKNESS
WASHER
THICKNESS
WASHER
DIAMETER
ref
min
max
min
max
min
max
ref
ref
4
0.1120
1/4
0.241
0.250
0.275
0.289
0.087
0.098
0.0130
0.2810
5
0.1250
5/16
0.302
0.312
0.344
0.361
0.102
0.114
0.0170
0.3440
6
0.1380
5/16
0.302
0.312
0.344
0.361
0.102
0.114
0.0170
0.3440
8
0.1640
11/32
0.332
0.374
0.378
0.397
0.117
0.130
0.0200
0.3750
10
0.1900
3/8
0.362
0.375
0.413
0.433
0.117
0.130
0.0220
0.4060
1/4
0.2500
7/16
0.423
0.438
0.482
0.505
0.178
0.193
0.0250
0.5000
5/16
0.3125
1/2
0.489
0.500
0.557
0.577
0.258
0.273
0.0290
0.5780
3/8
0.3750
9/16
0.551
0.562
0.628
0.650
0.365
0.385
0.0380
0.6560

METRIC K-LOCK NUTS (KEPS)

DIAMETER PITCH
F
C
H
OVERALL
HEIGHT
WASHER
THICKNESS
I
ACROSS
FLATS
ACROSS
CORNERS
NUT
THICKNESS
WASHER
DIAMETER
min
max
ref
min
max
ref
min
max
ref
M3
0.50
5.30
5.50
6.40
2.15
2.40
3.10
0.365
0.435
6.30
M4
0.70
6.80
7.00
8.10
2.90
3.20
4.00
0.365
0.435
8.00
M5
0.80
7.80
8.00
9.20
3.70
4.00
5.10
0.560
0.640
9.20
M6
1.00
9.80
10.00
11.50
4.70
5.00
6.10
0.560
0.640
11.00
M8
1.25
12.75
13.00
15.00
6.14
6.50
7.90
0.650
0.750
14.90
M10
1.50
16.75
17.00
19.60
7.64
8.00
9.60
0.850
0.950
19.00

 

Small Pattern Styles
F
C
H
OVERALL
HEIGHT
WASHER
THICKNESS
I
ACROSS
ACROSS
NUT
WASHER
DIAMETER
FLATS
CORNERS
THICKNESS
min
max
ref
min
max
ref
min
max
ref
M8
1.25
11.75
12.00
13.90
6.14
6.50
7.90
0.750
0.850
13.50
M10
1.25
13.75
14.00
16.20
7.64
8.00
9.60
0.850
0.950
16.30
M12
1.25
16.75
17.00
19.60
9.64
10.00
11.60
0.850
0.950
19.00

K-Lock nuts may be used in applications where an external tooth lockwasher and nut work together to create a locking assembly. K-Lock nuts are a cost saving fastener - Since the washer is captivated directly onto the nut, assembly time is cut dramatically. The external lockwasher with its twisted teeth create the maximum in holding power. K-Lock nuts are available in steel and also stainless steel. The stainless steel nuts are unique in that the hex nut is 300 series stainless (non-magnetic) and the captivated washer is heat-treated 400 series stainless (magnetic). This allows the washer teeth to "bite" into the nut and also the working surface to create the ultimate in holding power.

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