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Category
  1. Wellnut Inserts
Manufacturer
  1. Bayfast
  2. Marson
  3. Pop
Brands
  1. BayFast Wellnuts
  2. MNN Series
  3. Pop Wellnuts
OEM Unit Of Measure
  1. Metric
  2. Unified
Thread Size
  1. #10-32 UNF-2B
  2. #6-32 UNC-2B
  3. #8-32 UNC-2B
  4. 1/2-13 UNC-2B
  5. 1/4-20 UNC-2B
  6. 10-24 UNC-2B
  7. 10-32 UNF-2B
  8. 3/8-16 UNC-2B
  9. 5/16-18 UNC-2B
  10. 6-32 UNC-2B
  11. 8-32 UNC-2B
  12. M10x1.5 ISO-5H
  13. M12x1.75 ISO-5H
  14. M3 x 0.50 ISO-6H
  15. M3x0.5 ISO-5H
  16. M4 x 0.70 ISO-6H
  17. M4x0.7 ISO-5H
  18. M5 x 0.80 ISO-6H
  19. M5x0.8 ISO-5H
  20. M6 x 1.0 ISO-6H
  21. M6x1 ISO-5H
  22. M8 x 1.25 ISO-6H
  23. M8x1.25 ISO-5H
Minimum Grip [Unified] mm
  1. [.015] 0.38mm
  2. [.030] 0.76mm
  3. [.031] 0.79mm
  4. [.035] 0.89mm
  5. [.156] 3.96mm
  6. [.187] 4.75mm
  7. [.215] 5.46mm
  8. [.250] 6.35mm
  9. [.311] 7.90mm
  10. [.312] 7.93mm
  11. [.375] 9.53mm
  12. [.812] 20.63mm
  13. [0.015] 0.38mm
  14. [0.030] 0.76mm
  15. [0.031] 0.79mm
  16. [0.035] 0.89mm
  17. [0.156] 3.96mm
  18. [0.187] 4.75mm
  19. [0.197] 5.00mm
  20. [0.215] 5.46mm
  21. [0.250] 6.35mm
  22. [0.280] 7.11mm
  23. [0.312] 7.92mm
  24. [0.312] 7.93mm
  25. [0.375] 9.53mm
  26. [0.625] 15.88mm
  27. [0.812] 20.62mm
  28. [0.812] 20.63mm
Maximum Grip [Unified] mm
  1. [.050] 1.27mm
  2. [.111] 2.82mm
  3. [.156] 3.96mm
  4. [.172] 4.37mm
  5. [.187] 4.75mm
  6. [.192] 4.88mm
  7. [.227] 5.77mm
  8. [.232] 5.89mm
  9. [.277] 7.04mm
  10. [.343] 8.71mm
  11. [.375] 9.53mm
  12. [.422] 10.72mm
  13. [.437] 11.10mm
  14. [.450] 11.43mm
  15. [.457] 11.61mm
  16. [.607] 15.42mm
  17. [.630] 16.00mm
  18. [.643] 16.33mm
  19. [0.050] 1.27mm
  20. [0.062] 1.57mm
  21. [0.094] 2.39mm
  22. [0.111] 2.82mm
  23. [0.118] 3.00mm
  24. [0.125] 3.18mm
  25. [0.156] 3.96mm
  26. [0.172] 4.37mm
  27. [0.187] 4.75mm
  28. [0.192] 4.88mm
  29. [0.227] 5.77mm
  30. [0.232] 5.89mm
  31. [0.237] 6.02mm
  32. [0.277] 7.04mm
  33. [0.342] 8.67mm
  34. [0.343] 8.71mm
  35. [0.375] 9.53mm
  36. [0.422] 10.72mm
  37. [0.437] 11.10mm
  38. [0.437] 11.1mm
  39. [0.450] 11.43mm
  40. [0.457] 11.61mm
  41. [0.500] 12.7mm
  42. [0.607] 15.42mm
  43. [0.643] 16.33mm
  44. [0.830] 21.08mm
  45. [1.143] 29.03mm
Grip Range [Unified]
  1. .015-.050
  2. .015-.062
  3. .015-.094
  4. .015-.111
  5. .015-.118
  6. .015-.156
  7. .015-.172
  8. .015-.192
  9. .015-.237
  10. .015-.437
  11. .030-.227
  12. .031-.187
  13. .035-.232
  14. .187-.343
  15. .250-.457
  16. .311-.630
  17. .312-.450
  18. .312-.643
  19. .375-.607
  20. .812-1.143
  21. 0.015 - 0.050
  22. 0.015 - 0.111
  23. 0.015 - 0.125
  24. 0.015 - 0.156
  25. 0.015 - 0.172
  26. 0.015 - 0.192
  27. 0.015 - 0.437
  28. 0.015-0.050
  29. 0.015-0.094
  30. 0.015-0.111
  31. 0.015-0.156
  32. 0.015-0.192
  33. 0.015-0.437
  34. 0.030 - 0.227
  35. 0.030 - 0.277
  36. 0.030-0.227
  37. 0.031 - 0.187
  38. 0.031-0.187
  39. 0.035 - 0.232
  40. 0.156 - 0.375
  41. 0.187- 0.343
  42. 0.187-0.343
  43. 0.197 - 0.342
  44. 0.215 - 0.422
  45. 0.250 - 0.457
  46. 0.280 - 0.500
  47. 0.312 - 0.450
  48. 0.312 - 0.643
  49. 0.312-0.450
  50. 0.375 - 0.607
  51. 0.625 - 0.830
  52. 0.812 - 1.143
  53. 0.812-1.143
Grip Range [Metric]
  1. 0.38 - 1.27mm
  2. 0.38 - 1.57mm
  3. 0.38 - 11.10mm
  4. 0.38 - 2.39mm
  5. 0.38 - 2.82mm
  6. 0.38 - 3.00mm
  7. 0.38 - 3.96mm
  8. 0.38 - 4.37mm
  9. 0.38 - 4.88mm
  10. 0.38 - 6.02mm
  11. 0.38-1.27mm
  12. 0.38-11.10mm
  13. 0.38-11.1mm
  14. 0.38-2.39mm
  15. 0.38-2.82mm
  16. 0.38-3.18mm
  17. 0.38-3.96mm
  18. 0.38-4.37mm
  19. 0.38-4.88mm
  20. 0.381-3.96mm
  21. 0.76 - 5.77mm
  22. 0.76-5.77mm
  23. 0.76-7.04mm
  24. 0.79 - 4.75mm
  25. 0.79-4.75mm
  26. 0.89 - 5.89mm
  27. 0.89-5.89mm
  28. 15.88-21.08mm
  29. 20.62 - 29.03mm
  30. 20.63-29.03mm
  31. 3.96-9.53mm
  32. 4.75 - 8.71mm
  33. 4.75-8.71mm
  34. 5.00-8.67mm
  35. 5.46-10.72mm
  36. 6.35 - 11.61mm
  37. 6.35-11.61mm
  38. 7.11-12.7mm
  39. 7.90-16.00mm
  40. 7.92 - 11.43mm
  41. 7.92 - 16.33mm
  42. 7.93-11.43mm
  43. 7.93-16.33mm
  44. 9.53 - 15.42mm
  45. 9.53-15.42mm
Body Material
  1. Brass
Body Finish
  1. Chloroprene
  2. EPDM
  3. Neoprene
Fastener Diameter (Nom) [Unified]
  1. [0.012]
  2. [0.015]
  3. [0.030]
  4. [0.240]
  5. [0.250]
  6. [0.310]
  7. [0.312]
  8. [0.375]
  9. [0.377]
  10. [0.491]
  11. [0.492]
  12. [0.500]
  13. [0.562]
  14. [0.620]
  15. [0.625]
  16. [0.750]
Fastener Diameter (Nom) [Metric]
  1. [0.31]mm
  2. [0.38]mm
  3. [0.75]mm
  4. [12.47]mm
  5. [12.50]mm
  6. [12.70]mm
  7. [12.7]mm
  8. [14.28]mm
  9. [15.74]mm
  10. [15.75]mm
  11. [15.88]mm
  12. [19.05]mm
  13. [6.10]mm
  14. [6.35]mm
  15. [7.87]mm
  16. [7.92]mm
  17. [7.93]mm
  18. [9.53]mm
  19. [9.58]mm
Snap In
  1. No
  2. Yes
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Wellnut Inserts

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Wellnut | Well Nut Fastener Inserts - Bay Supply Fasteners, Rivets, Tool Parts

Explore our large selection of well nut inserts and find exactly what you need for your project or applications. You'll discover wellnut inserts from a wide variety of manufactures including Bayfast, Marson, and Pop. Available in an array of dimensions and shipping quantities, you'll find a wellnut insert that meets the exact specifications your workpiece. If you need another solution or product, take a look at our inventory of fasteners and rivet nut inserts.


Contact us or request a quote to learn more about our selection of well nut inserts.


Wellnut Inserts: Found 207 Item(s)

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    • BayFast Wellnuts 16-01U

    • BayFast Wellnuts 16-01U

      347024-B, Bayfast Wellnut 6-32, [.375-.607 GR] .981 Length, Fl  

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      • MPN: 16-01U
      • BSPN: BA-347024-B
      • Min Order Qty: 1
      • Qty Interval: 1
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      • Price:
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-02M

    • BayFast Wellnuts 16-02M

      347027-B, Bayfast Wellnut M4x0.7, [.38-1.27mm GR] 10.92mm Leng  

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      • MPN: 16-02M
      • BSPN: BA-347027-B
      • Min Order Qty: 1
      • Qty Interval: 1
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      • Price:
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-02U

    • BayFast Wellnuts 16-02U

      347029-B, Bayfast Wellnut 8-32, [.015-.050 GR] .430 Length, Fl  

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      • MPN: 16-02U
      • BSPN: BA-347029-B
      • Min Order Qty: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-03U

    • BayFast Wellnuts 16-03U

      347042-B, Bayfast Wellnut 6-32, [.015-.156 GR] .499 Length, Fl  

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      • MPN: 16-03U
      • BSPN: BA-347042-B
      • Min Order Qty: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-04M

    • BayFast Wellnuts 16-04M

      347011-B, Bayfast Wellnut M4x0.7, [.38-3.96mm GR] 12.67mm Leng  

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      • MPN: 16-04M
      • BSPN: BA-347011-B
      • Min Order Qty: 1
      • Qty Interval: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-04U

    • BayFast Wellnuts 16-04U

      347012-B, Bayfast Wellnut 8-32, [.015-.156 GR] .499 Length, Fl  

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      • MPN: 16-04U
      • BSPN: BA-347012-B
      • Min Order Qty: 1
      • Qty Interval: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-05U

    • BayFast Wellnuts 16-05U

      347025-B, Bayfast Wellnut 8-32, [.015-.172 GR] .560 Length, Fl  

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      • MPN: 16-05U
      • BSPN: BA-347025-B
      • Min Order Qty: 1
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    • BayFast Wellnuts 16-08M

    • BayFast Wellnuts 16-08M

      347266-B, Bayfast Wellnut M5x0.8, [.38-1.27mm GR] 10.16mm Leng  

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      • MPN: 16-08M
      • BSPN: BA-347266-B
      • Min Order Qty: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-08U

    • BayFast Wellnuts 16-08U

      347280-B, Bayfast Wellnut 10-32, [.015-.050 GR] .400 Length, F  

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      • MPN: 16-08U
      • BSPN: BA-347280-B
      • Min Order Qty: 1
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    • BayFast Wellnuts 16-11M

    • BayFast Wellnuts 16-11M

      347006-B, Bayfast Wellnut M5x0.8, [.38-1.27mm GR] 14.27mm Leng  

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      • MPN: 16-11M
      • BSPN: BA-347006-B
      • Min Order Qty: 1
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

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    • BayFast Wellnuts 16-11U

    • BayFast Wellnuts 16-11U

      347004-B, Bayfast Wellnut 10-24, [.015-.050 GR] .562 Length, F  

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      • MPN: 16-11U
      • BSPN: BA-347004-B
      • Min Order Qty: 1
      • Qty Interval: 1
      • Available:
      • Price:
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      • Bay Part# Ending With (-B) Represents a BAYFAST Brand Part Number

      • Availability By Branch

      Branch Name Available

Shop for Well Nut Fastener Inserts at Bay Supply

If you have a job that involves sealing bolt holes or connecting items to surfaces, you may need well nut fastener inserts! Wellnut inserts can be blind fastened since only one side of the hole needs to be revealed. Appropriate for many different applications, well nuts offer water-resistant fastening, vibration resistance and, in some instances, insulation between materials. Bay Supply has a wide range of wellnut inserts available, so start browsing now!

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    Online pricing is accurate to our internal systems for ease of use. Quantity Break Pricing is displayed to help our customers carefully budget and plan for cost efficiencies. Accounts and pricing are specific to each customer and can be managed by your staff. You may re-name part numbers specific to your operating system, save product groupings and establish rapid re-order lists to streamline your order processes.

    We have electronically cataloged every product specification compiled in our systems since 1962. If the item you require is not found through our online search, please submit requests for quotes and our rapid response team will source products that meet your specifications.

    Engineering Specifications, Data Sheets, Product Attributes, Tool Manuals, Instructional Videos and Manufacturer Catalogs are available on item detail pages and supplemental information may be available in our Resource Library.

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  2. Company Information

    Bay Supply is an online marketing division of Bay Fastening Systems and an integral part of the Bay Marketing Network serving the Global Industrial Supply Marketplace.

    Bay Fastening System
    30 Banfi Plaza N,
    Farmingdale, NY 11735


    For Customer Service, Repairs or Technical Support


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    8AM - 5PM EST

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