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Metric Coupling Nuts, Stainless Steel A2, M8 x 1.25 x 24mm

Rod Coupling Nuts in A2 Stainless Steel

Our A2 stainless steel metric coupling nuts are used to connect and extend metric threaded rod, studs, or bolts, creating a strong continuous threaded connection. Made from A2 stainless steel (304 / 18-8 equivalent), these coupling nuts offer excellent corrosion resistance for general outdoor and humid environments, making them a reliable choice for industrial assemblies, support systems, and equipment builds. Available in sizes M6 through M24.

Material: A2 Stainless Steel (304 / 18-8 equivalent)

Thread Type: Metric

Sizes Available: M6 to M24

Type: Coupling Nut / Extension Nut

Use: Joins threaded rod, studs, or bolts to extend overall length

Corrosion Resistance: Great for humid + general outdoor (non-marine) environments

Easy Installation: Long hex design fits standard wrench sizes


Product number: MCNA28
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Click on a size/sku in the table to view product-specific details and specifications.

Specifications

  • Color: Silver
  • Diameter: M8
  • Drive Style: External Hex
  • Thread Direction: Right Hand
  • Fit: 6H
  • Grade: A2
  • Internal Thread: M8-1.25
  • Length: 24mm
  • Material (Duplicate): Stainless Steel
  • Material: Steel
  • Product Type: Coupling Nut
  • System of Measurement: Metric
  • Thread Direction: Right Hand
  • Thread Pitch: 1.25 mm
  • Thread Size: M8 x 1.25
  • Tolerance (IFI): Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Select Size/SKU & Quantity
7 Available Sizes
SIZE/SKU Review Volume Pricing* Enter Any Qty
M6-1.00 x 18mm
MCNA26
1
$0.63 ($0.63/ea)
100
$58.00 ($0.58/ea)
1000
$530.00 ($0.53/ea)
$0.00
M8-1.25 x 24mm
MCNA28
1
$0.84 ($0.84/ea)
100
$77.00 ($0.77/ea)
1000
$700.00 ($0.70/ea)
$0.00
M10-1.50 x 20mm
MCNA2M10
1
$1.86 ($1.86/ea)
100
$112.00 ($1.12/ea)
1000
$1,030.00 ($1.03/ea)
$0.00
M12-1.75 x 36mm
MCNA2M12
1
$2.61 ($2.61/ea)
100
$240.00 ($2.40/ea)
1000
$2,180.00 ($2.18/ea)
$0.00
M16-2.00 x 48mm
MCNA2M16
1
$6.30 ($6.30/ea)
100
$580.00 ($5.80/ea)
1000
$5,250.00 ($5.25/ea)
$0.00
M20-2.50 x 60mm
MCNA2M20
1
$22.22 ($22.22/ea)
100
$2,037.00 ($20.37/ea)
1000
$18,520.00 ($18.52/ea)
$0.00
M24-3.00 x 72mm
MCNA2M24
1
$47.54 ($47.54/ea)
100
$4,358.00 ($43.58/ea)
1000
$39,620.00 ($39.62/ea)
$0.00

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MRO Solution 2400, Marine Grade Anti-Seize Lubricant, 8 oz. MRO Solution 2400, Marine Grade Anti-Seize Lubricant, 8 oz.
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3/8" Drive Standard Metric 6 Point Drive Sockets, 13MM 3/8" Drive Standard Metric 6 Point Drive Sockets, 13MM
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Metric Flat Washers, Stainless Steel A2 (18-8), M8 (8.4M ID x 16.0M OD x 1.6M Thick) Metric Flat Washers, Stainless Steel A2 (18-8), M8 (8.4M ID x 16.0M OD x 1.6M Thick)
Volume Pricing*
1
$0.11
($0.11/ea)
100
$5.00
($0.05/ea)
1000
$40.00
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Lock Washers, External Tooth, Stainless Steel A2, M8 (8.4ID x 15.0OD x 0.8THK) Lock Washers, External Tooth, Stainless Steel A2, M8 (8.4ID x 15.0OD x 0.8THK)
Volume Pricing*
1
$0.10
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100
$6.00
($0.06/ea)
1000
$50.00
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$0.00
Metric Internal Tooth Lock Washer, Stainless Steel A2 (18-8), M8 (8.4ID x 15.0OD x 0.8THK) Metric Internal Tooth Lock Washer, Stainless Steel A2 (18-8), M8 (8.4ID x 15.0OD x 0.8THK)
Volume Pricing*
1
$0.10
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100
$6.00
($0.06/ea)
1000
$50.00
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$0.00
Metric Lock Washers, Split Ring, Stainless Steel A2 (18-8), M8 (8.1M ID x 14.8M OD x 2.0 Thick) Metric Lock Washers, Split Ring, Stainless Steel A2 (18-8), M8 (8.1M ID x 14.8M OD x 2.0 Thick)
Volume Pricing*
1
$0.12
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100
$6.00
($0.06/ea)
1000
$50.00
($0.05/ea)
$0.00
Nylon Lock Nuts, Stainless Steel A2, M8 x 1.25 (13.0 Flats x 8.0 Height) Nylon Lock Nuts, Stainless Steel A2, M8 x 1.25 (13.0 Flats x 8.0 Height)
Volume Pricing*
1
$0.17
($0.17/ea)
100
$11.00
($0.11/ea)
1000
$100.00
($0.10/ea)
$0.00

*Volume pricing available on select products. Products without quantity breaks are priced per unit.

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