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System of Measurement
Inch
Metric
Thread Size
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0000-160
000-120
00-90
00-96
0-80
1-64
1-72
2-56
2-64
3-48
3-56
4-36
4-40
4-40 to
5/16"
-32
4-48
5-40
5-44
6-32
6-40
6-80
8-32
8-36
10-24
10-32
12-24
12-28
1/8"
-20.8
1/8"
-41.7
9/64"
-20.8
9/64"
-41.7
5/32"
-21.3
3/16"
-42.7
3/16"
-100
7/32"
-20.8
1/4"
-8
1/4"
-12
1/4"
-16
1/4"
-20
1/4"
-28
1/4"
-32
1/4"
-40
1/4"
-80
1/4"
-100
5/16"
-18
5/16"
-24
5/16"
-28
5/16"
-32
11/32"
-24
3/8"
-5
3/8"
-8
3/8"
-10
3/8"
-12
3/8"
-16
3/8"
-20
3/8"
-24
3/8"
-32
3/8"
-40
0.391"-32
7/16"
-12
7/16"
-14
7/16"
-20
7/16"
-24
7/16"
-28
15/32"
-32
0.469"-32
1/2"
-4
1/2"
-6
1/2"
-8
1/2"
-10
1/2"
-13
1/2"
-20
1/2"
-28
9/16"
-12
9/16"
-18
9/16"
-24
0.586"-32
5/8"
-5
5/8"
-6
5/8"
-8
5/8"
-10
5/8"
-11
5/8"
-18
5/8"
-24
5/8"
-27
0.628"-20
0.664"-32
11/16"
-11
11/16"
-12
11/16"
-24
11/16"
-27
11/16"
-28
3/4"
-4
3/4"
-4
1/2
3/4"
-5
3/4"
-6
3/4"
-8
3/4"
-10
3/4"
-14
3/4"
-16
3/4"
-18
3/4"
-20
0.781"-32
0.803"-14
13/16"
-16
0.830"-14
0.855"-14
7/8"
-6
7/8"
-9
7/8"
-14
7/8"
-20
0.880"-14
0.899"-14
0.908"-14
15/16"
-16
0.960"-14
0.965"-14
0.969"-32
1"-3
1/2
1"-4
1"-5
1"-6
1"-8
1"-10
1"-12
1"-14
1"-18
1.035"-14
1.040"-14
1
1/16"
-12
1
1/16"
-14
1.108"-14
1.120"-14
1
1/8"
-5
1
1/8"
-7
1
1/8"
-8
1
1/8"
-12
1
1/8"
-14
1
1/8"
-18
1.173"-18
1
3/16"
-12
1
1/4"
-4
1
1/4"
-5
1
1/4"
-7
1
1/4"
-8
1
1/4"
-12
1
1/4"
-16
1.312"-18
1
5/16"
-12
1
5/16"
-16
1
3/8"
-4
1
3/8"
-6
1
3/8"
-8
1
3/8"
-12
1
3/8"
-16
1.376"-18
1
1/2"
-2
1
1/2"
-4
1
1/2"
-5
1
1/2"
-6
1
1/2"
-8
1
1/2"
-10
1
1/2"
-12
1
9/16"
-18
1.563"-18
1
5/8"
-5
1/2
1
5/8"
-8
1
5/8"
-12
1
3/4"
-5
1
3/4"
-8
1
3/4"
-12
1.767"-18
1
7/8"
-5
1
7/8"
-8
1
7/8"
-12
1
7/8"
-16
1.967"-18
1
31/32"
-18
2"-2
2"-4
2"-4
1/2
2"-5
2"-8
2"-12
2.157"-18
2
1/4"
-2
2
1/4"
-4
2
1/4"
-4
1/2
2
1/4"
-8
2
1/4"
-12
2
1/4"
-20
2.360"-18
2
23/64"
-18
2
1/2"
-3
2
1/2"
-4
2
1/2"
-12
2
35/64"
-18
2.548"-18
2
3/4"
-4
2
3/4"
-12
2.751"-18
2.933"-12
3"-4
3"-12
3.137"-12
3
9/64"
-12
3.340"-12
3
1/2"
-4
3.527"-12
3.730"-12
3.918"-12
4.122"-12
4.325"-12
4.716"-12
M1
M1.2
M1.4
M1.6
M1.7
M1.8
M2
M2.2
M2.3
M2.5
M2.6
M3
M3.5
M4
M4.2
M4.5
M5
M6
M6.3
M7
M8
M9
M10
M11
M12
M14
M15
M16
M17
M18
M20
M22
M24
M25
M26
M27
M28
M30
M32
M33
M34
M35
M36
M38
M39
M40
M42
M45
M48
M50
M52
M55
M56
M60
M62
M63
M64
M65
M68
M70
M72
M75
M80
M85
M90
M95
M100
M105
M110
M115
M120
M125
M130
M135
M140
M145
M150
M155
M160
M165
M170
M180
M190
M200
M220
M240
M260
M280
W 21.8
PG-7
PG-9
PG-11
PG-13.5
PG-16
PG-21
PG-29
PG-36
PG-48
Material
Aluminum
Brass
Ceramic
Grade 2 Titanium
Nickel
Plastic
Stainless Steel
Steel
Nut Type
Cap
Coupling
Flange
Hex
Locknut
Press Fit
Push
Round
Square
Thumb
Width
1/8"
5/32"
3/16"
7/32"
1/4"
Hex Nut Profile
Narrow
Standard
Thin
Height
0.036"
0.058"
0.06"
1/16"
5/64"
3/32"
7/64"
0.117"
9/64"
5/32"
3/16"
1/4"
Finish
Black Oxide
Cadmium Plated
Cadmium Yellow-Chromate Plated
Dry Film Lubricated
Passivated
Phosphate Coated
Tin Plated
Zinc Plated
Zinc Yellow-Chromate Plated
Thread Type
UNC
UNJC
Locking Type
Distorted Thread
Flex-Top
Nylon Insert
Thread Forming
Threadlocker
Thread Spacing
Coarse
Performance
Chemical Resistant
Corrosion Resistant
Flame Retardant
High Strength
High Temperature
Lightweight
Nonmagnetic
Seize Resistant
Vibration Resistant
Wear Resistant
Thread Direction
Right Hand
Length
1/16"
3/32"
1/8"
5/32"
3/16"
7/32"
1/4"
9/32"
5/16"
11/32"
3/8"
13/32"
7/16"
15/32"
1/2"
9/16"
5/8"
11/16"
3/4"
13/16"
7/8"
15/16"
1"
1
1/8"
1
1/4"
1
1/2"
1
3/4"
2"
Specifications Met
ASME B18.6.3
ASTM Standard
Federal Specification
NAS
Drive Style
External Hex
External Square
Slotted
Certification
Mil. Spec.
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Military Specification
MIL-DTL-45932/1
MIL-I-8846
MIL-I-45914
MS17830-02C
MS21042-02
MS21042L02
MS21044C02
MS21083C02
MS21209C0210
MS21209C0210L
MS21209C0215
MS21209C0215L
MS21209C0220
MS21209C0220L
MS21209C0225
MS35649-222
MS35649-224
MS51830-101
Thread Fit
Metric Class 6g
Metric Class 6H
Unified Standard Class 2A
Unified Standard Class 2B
Unified Standard Class 3A
Unified Standard Class 3B
Flange Diameter
0.167"
0.17"
11/64"
0.187"
3/16"
0.188"
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
REACH
Compliant
Not Compliant
Export Control Classification Number (ECCN)
EAR99
Panel Thickness
0.012"
0.019" to 0.022"
0.025"
0.03"
0.03" to 0.036"
0.04"
0.05"
0.056"
0.06"
0.062"
0.125"
PEM® Part Number
CLA-256-1
CLA-256-2
CLS-256-0
CLS-256-1
CLS-256-2
F4-256-1
KF2-256
KFS2-256
MSO4-256-3
MSO4-256-4
S-256-0ZI
S-256-1ZI
S-256-2ZI
SMPP-256
SMPS-256
SP-256-0
SP-256-1
SP-256-2
U-256-0
U-256-1
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530 Products
Fastening and Joining
Hex Nuts
Handle most general fastening needs
18 products
Locknuts
Hold fasteners in place to prevent loosening from vibration
8 products
Flange Nuts
The flange distributes pressure, so you don't need a washer
4 products
Square Nuts
Flat sides won’t spin in channels and square holes
2 products
Cap Nuts
Cover and protect threads while adding a finished look; also known as acorn nuts
4 products
Coupling Nuts
Connect and extend threaded rods
6 products
Thumb Nuts
Easy to tighten and loosen by hand for making frequent adjustments
5 products
Press-Fit Nuts
Push into drilled or punched holes to add threads to thin panels
23 products
Threaded Inserts
Create new threads or repair stripped threads
96 products
Push Nuts
Press onto threads for a light duty hold that’s faster to install than typical nuts
1 product
Standoffs
Separate, position, or connect components in assemblies
262 products
Thread Adapters
Join threads of a different type, size, and gender
87 products
Press-Fit Nut Installation Tools
Everything you need to install press-fit nuts by hand
1 product
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)