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Thumb Nuts

Thumb nuts offer a unique and finished look that allow for a nut to be tightened without tools. Lyn-Tron's thumb nuts are offered in all common female threads and in both the round knurled thumb nuts and hex style thumb nuts. Thumb nuts can be used to secure electrical wiring in electrical components or to temporarily fasten parts that need adjustments, changing, or removing frequently.

Selecting Thumb Nuts

The two types of thumb nuts allow for two different types of tightening of the nut. The round nut is knurled to allow for an easy grip by hand while the hex thumb provides the option for tightening by using a wrench. The material selection for our thumb nuts are:

  • Stainless Steel
  • Steel
  • Brass

In addition to offering thumb nuts in round and hex, Lyn-Tron carries a full line of thread types in both inch and metric. If you don’t see the thread size you need, feel free to contact us directly

Didn’t find what you need? Contact Us for your project specific requirements.

Lyn-Tron has been manufacturing electronic components and hardware items for over 50 years! All Lyn-Tron electronic hardware is made in the USA and held to the highest quality standards. Our custom hardware goes through the same quality standards so customers will always receive a product they can trust.

Contact us today if you have any questions about selecting thumb nuts for your products. We are open to discuss any custom designs or unique needs your project requires.

Contact Lyn-Tron Inc | Electronic Components Suppliers

#2-56 Thumb Nuts

1/4"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7710 Stainless Steel 1/4" 1/8" #2-56 3/16" 1/8"
  • Material: Stainless Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Female Thread: #2-56
  • Washer Diameter: 3/16"
  • Washer Length: 1/8"
SS7719 Stainless Steel 1/4" 1/8" #2-56 3/16" 1/8"
  • Material: Stainless Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Female Thread: #2-56
  • Washer Diameter: 3/16"
  • Washer Length: 1/8"

#4-40 Thumb Nuts

5/16"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7711 Stainless Steel 5/16" 1/8" #4-40 1/4" 1/8"
  • Material: Stainless Steel
  • Head Diameter: 5/16"
  • Head Length: 1/8"
  • Female Thread: #4-40
  • Washer Diameter: 1/4"
  • Washer Length: 1/8"
SS7720 Stainless Steel 5/16" 1/8" #4-40 1/4" 1/8"
  • Material: Stainless Steel
  • Head Diameter: 5/16"
  • Head Length: 1/8"
  • Female Thread: #4-40
  • Washer Diameter: 1/4"
  • Washer Length: 1/8"

#6-32 Thumb Nuts

3/8"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7712 Stainless Steel 3/8" 1/8" #6-32 11/32" 5/32"
  • Material: Stainless Steel
  • Head Diameter: 3/8"
  • Head Length: 1/8"
  • Female Thread: #6-32
  • Washer Diameter: 11/32"
  • Washer Length: 5/32"
SS7721 Stainless Steel 3/8" 1/8" #6-32 11/32" 5/32"
  • Material: Stainless Steel
  • Head Diameter: 3/8"
  • Head Length: 1/8"
  • Female Thread: #6-32
  • Washer Diameter: 11/32"
  • Washer Length: 5/32"

#8-32 Thumb Nuts

7/16"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7713 Stainless Steel 7/16" 1/8" #8-32 3/8" 5/32"
  • Material: Stainless Steel
  • Head Diameter: 7/16"
  • Head Length: 1/8"
  • Female Thread: #8-32
  • Washer Diameter: 3/8"
  • Washer Length: 5/32"
SS7722 Stainless Steel 7/16" 1/8" #8-32 3/8" 5/32"
  • Material: Stainless Steel
  • Head Diameter: 7/16"
  • Head Length: 1/8"
  • Female Thread: #8-32
  • Washer Diameter: 3/8"
  • Washer Length: 5/32"

#10-24 Thumb Nuts

1/2"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7714 Stainless Steel 1/2" 5/32" #10-24 13/32" 3/16"
  • Material: Stainless Steel
  • Head Diameter: 1/2"
  • Head Length: 5/32"
  • Female Thread: #10-24
  • Washer Diameter: 13/32"
  • Washer Length: 3/16"
SS7723 Stainless Steel 1/2" 5/32" #10-24 13/32" 3/16"
  • Material: Stainless Steel
  • Head Diameter: 1/2"
  • Head Length: 5/32"
  • Female Thread: #10-24
  • Washer Diameter: 13/32"
  • Washer Length: 3/16"

#10-32 Thumb Nuts

1/2"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7715 Stainless Steel 1/2" 5/32" #10-32 13/32" 3/16"
  • Material: Stainless Steel
  • Head Diameter: 1/2"
  • Head Length: 5/32"
  • Female Thread: #10-32
  • Washer Diameter: 13/32"
  • Washer Length: 3/16"
SS7724 Stainless Steel 1/2" 5/32" #10-32 13/32" 3/16"
  • Material: Stainless Steel
  • Head Diameter: 1/2"
  • Head Length: 5/32"
  • Female Thread: #10-32
  • Washer Diameter: 13/32"
  • Washer Length: 3/16"

#1/4-20 Thumb Nuts

9/16"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7716 Stainless Steel 9/16" 5/32" #1/4-20 15/32" 7/32"
  • Material: Stainless Steel
  • Head Diameter: 9/16"
  • Head Length: 5/32"
  • Female Thread: #1/4-20
  • Washer Diameter: 15/32"
  • Washer Length: 7/32"
SS7725 Stainless Steel 9/16" 5/32" #1/4-20 15/32" 7/32"
  • Material: Stainless Steel
  • Head Diameter: 9/16"
  • Head Length: 5/32"
  • Female Thread: #1/4-20
  • Washer Diameter: 15/32"
  • Washer Length: 7/32"

#5/16-18 Thumb Nuts

5/8"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7717 Stainless Steel 5/8" 3/16" #5/16-18 17/32" 7/32"
  • Material: Stainless Steel
  • Head Diameter: 5/8"
  • Head Length: 3/16"
  • Female Thread: #5/16-18
  • Washer Diameter: 17/32"
  • Washer Length: 7/32"

#3/8-16 Thumb Nuts

3/4"

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS7718 Stainless Steel 3/4" 7/32" #3/8-16 5/8" 1/4"
  • Material: Stainless Steel
  • Head Diameter: 3/4"
  • Head Length: 7/32"
  • Female Thread: #3/8-16
  • Washer Diameter: 5/8"
  • Washer Length: 1/4"

M2.5x0.45 Thumb Nuts

6mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5560 Stainless Steel 6mm 3.0mm M2.5x0.45 5.0mm 3.0mm
  • Material: Stainless Steel
  • Head Diameter: 6mm
  • Head Length: 3.0mm
  • Female Thread: M2.5x0.45
  • Washer Diameter: 5.0mm
  • Washer Length: 3.0mm
SS5580 Stainless Steel 6mm 3.0mm M2.5x0.45 5.0mm 3.0mm
  • Material: Stainless Steel
  • Head Diameter: 6mm
  • Head Length: 3.0mm
  • Female Thread: M2.5x0.45
  • Washer Diameter: 5.0mm
  • Washer Length: 3.0mm

M3.0x0.5 Thumb Nuts

8mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5561 Stainless Steel 8mm 3.0mm M3.0x0.5 6.0mm 3.0mm
  • Material: Stainless Steel
  • Head Diameter: 8mm
  • Head Length: 3.0mm
  • Female Thread: M3.0x0.5
  • Washer Diameter: 6.0mm
  • Washer Length: 3.0mm
SS5581 Stainless Steel 8mm 3.0mm M3.0x0.5 6.0mm 3.0mm
  • Material: Stainless Steel
  • Head Diameter: 8mm
  • Head Length: 3.0mm
  • Female Thread: M3.0x0.5
  • Washer Diameter: 6.0mm
  • Washer Length: 3.0mm

M3.5x0.6 Thumb Nuts

10mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5562 Stainless Steel 10mm 3.0mm M3.5x0.6 9.0mm 4.0mm
  • Material: Stainless Steel
  • Head Diameter: 10mm
  • Head Length: 3.0mm
  • Female Thread: M3.5x0.6
  • Washer Diameter: 9.0mm
  • Washer Length: 4.0mm
SS5582 Stainless Steel 10mm 3.0mm M3.5x0.6 9.0mm 4.0mm
  • Material: Stainless Steel
  • Head Diameter: 10mm
  • Head Length: 3.0mm
  • Female Thread: M3.5x0.6
  • Washer Diameter: 9.0mm
  • Washer Length: 4.0mm

M4.0x0.7 Thumb Nuts

10mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5563 Stainless Steel 10mm 3.0mm M4.0x0.7 9.0mm 4.0mm
  • Material: Stainless Steel
  • Head Diameter: 10mm
  • Head Length: 3.0mm
  • Female Thread: M4.0x0.7
  • Washer Diameter: 9.0mm
  • Washer Length: 4.0mm
SS5583 Stainless Steel 10mm 3.0mm M4.0x0.7 9.0mm 4.0mm
  • Material: Stainless Steel
  • Head Diameter: 10mm
  • Head Length: 3.0mm
  • Female Thread: M4.0x0.7
  • Washer Diameter: 9.0mm
  • Washer Length: 4.0mm

M5.0x0.8 Thumb Nuts

13mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5564 Stainless Steel 13mm 4mm M5.0x0.8 11.0mm 5.0mm
  • Material: Stainless Steel
  • Head Diameter: 13mm
  • Head Length: 4mm
  • Female Thread: M5.0x0.8
  • Washer Diameter: 11.0mm
  • Washer Length: 5.0mm
SS5584 Stainless Steel 13mm 4mm M5.0x0.8 11.0mm 5.0mm
  • Material: Stainless Steel
  • Head Diameter: 13mm
  • Head Length: 4mm
  • Female Thread: M5.0x0.8
  • Washer Diameter: 11.0mm
  • Washer Length: 5.0mm

M6.0x1.0 Thumb Nuts

13mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5565 Stainless Steel 13mm 4mm M6.0x1.0 12.0mm 5.0mm
  • Material: Stainless Steel
  • Head Diameter: 13mm
  • Head Length: 4mm
  • Female Thread: M6.0x1.0
  • Washer Diameter: 12.0mm
  • Washer Length: 5.0mm
SS5585 Stainless Steel 13mm 4mm M6.0x1.0 12.0mm 5.0mm
  • Material: Stainless Steel
  • Head Diameter: 13mm
  • Head Length: 4mm
  • Female Thread: M6.0x1.0
  • Washer Diameter: 12.0mm
  • Washer Length: 5.0mm

M8.0x1.25 Thumb Nuts

19.0mm

Part Number Material Head Diameter Head Length Female Thread Washer Diameter Washer Length Details
SS5566 Stainless Steel 19.0mm 6mm M8.0x1.25 16.0mm 6.0mm
  • Material: Stainless Steel
  • Head Diameter: 19.0mm
  • Head Length: 6mm
  • Female Thread: M8.0x1.25
  • Washer Diameter: 16.0mm
  • Washer Length: 6.0mm
SS5586 Stainless Steel 19.0mm 6mm M8.0x1.25 16.0mm 6.0mm
  • Material: Stainless Steel
  • Head Diameter: 19.0mm
  • Head Length: 6mm
  • Female Thread: M8.0x1.25
  • Washer Diameter: 16.0mm
  • Washer Length: 6.0mm