SteelClass 8Zinc Yellow
P87080-2500
M8-1.25 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc
$77.78 – $231.48
Bulk Box (2,500 pcs)
$231.48
Flange Nuts
293 products
Flange nuts combine a hex nut with an integrated washer-like flange at the base. The flange spreads clamp load over a wider area — eliminating a separate washer — and serrated versions bite into the surface to resist loosening. They speed assembly and improve joint reliability. We stock flange nuts in serrated and smooth across grades and materials.
Serrated vs. Smooth
Serrated flange: ribs on the underside grip the bearing surface for anti-loosening performance like a lock washer — the common choice for vibration-prone joints. Smooth flange: a clean bearing face for surfaces that must not be marred, or for softer materials. Serrated flange nuts should not be used where the joint is frequently disassembled or the surface must stay unmarked.
Why Flange Nuts
By building the washer into the nut, flange nuts cut part count and assembly time and guarantee even bearing. The wide flange also distributes load on slotted or oversized holes better than a plain hex nut with no washer.
Materials and Finishes
Grade 5 and Grade 8 steel with zinc plating, and 18-8 / 316 stainless for corrosion resistance. Metric flange nuts use classes 8 and 10. Match to the bolt grade and environment.
Dimensional Standards
Metric hex flange nuts follow DIN 6923 / ISO 4161; inch versions follow IFI flange nut standards.
Selecting the Right Flange Nut
Choose serrated for vibration resistance, smooth where surfaces must not be marred. Match grade to the bolt, material to the environment, and verify thread pitch. Pair serrated flange nuts with a compatible bearing surface — they grip best on bare metal, less on coated or soft surfaces.
Use the filters to narrow by size, grade, material, and flange type.
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SteelClass 10PlainP88160-450M16-2.00 Serrated Hex Flange Nut (DIN 6923) (Class 10) / Low Carbon Steel / Plain
$108.66 – $291.06Bulk Box (450 pcs) $291.06
SteelClass 8Zinc YellowP87100-1500M10-1.50 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc
$52.22 – $233.12Bulk Box (1,500 pcs) $233.12
SteelClass 10PlainP88080-2500M8-1.25 Serrated Hex Flange Nut (DIN 6923) (Class 10) / Low Carbon Steel / Plain
$83.77 – $249.31Bulk Box (2,500 pcs) $249.31
SteelClass 8Zinc YellowP87140-500M14-2.00 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$87.12 – $259.29Bulk Box (500 pcs) $259.29
SteelClass 8PlainP86160-450M16-2.00 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$101.39 – $271.58Bulk Box (450 pcs) $271.58
SteelClass 8Zinc YellowP87120-900M12-1.75 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc
$84.33 – $225.87Bulk Box (900 pcs) $225.87
SteelClass 8Zinc YellowP87060-5000M6-1.00 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc
$76.84 – $228.68Bulk Box (5,000 pcs) $228.68
SteelClass 8PlainP86200-150M20-2.50 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$122.83 – $219.34Bulk Box (150 pcs) $219.34
SteelClass 8PlainP86100-1500M10-1.50 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$52.26 – $233.30Bulk Box (1,500 pcs) $233.30
SteelClass 8Zinc YellowP87050-10000M5-0.80 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc
$57.14 – $340.15Bulk Box (10,000 pcs) $340.15
SteelClass 8PlainP86080-2500M8-1.25 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$77.84 – $231.67Bulk Box (2,500 pcs) $231.67
SteelClass 8PlainP86120-900M12-1.75 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$84.42 – $226.12Bulk Box (900 pcs) $226.12
SteelClass 8Zinc YellowP85160-450M16-2.00 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$99.29 – $265.95Bulk Box (450 pcs) $265.95
SteelClass 8PlainP86060-5000M6-1.00 Serrated Hex Flange Nut (DIN 6923) (Class 8) / Low Carbon Steel / Plain
$76.58 – $227.93Bulk Box (5,000 pcs) $227.93
SteelClass 8Zinc YellowP85050-10000M5-0.80 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$56.26 – $334.91Bulk Box (10,000 pcs) $334.91
SteelClass 8Zinc YellowP85100-1500M10-1.50 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$51.27 – $228.89Bulk Box (1,500 pcs) $228.89
SteelClass 8Zinc YellowP85060-5000M6-1.00 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$75.37 – $224.31Bulk Box (5,000 pcs) $224.31
SteelClass 8Zinc YellowP85080-2500M8-1.25 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$76.40 – $227.37Bulk Box (2,500 pcs) $227.37
SteelClass 8Zinc YellowP85120-900M12-1.75 Serrated Hex Flange Nut (DIN 6923) (Class 8 Yellow Cr+6) / Low Carbon Steel / Zinc Yellow
$82.83 – $221.88Bulk Box (900 pcs) $221.88
SteelClass 8Zinc547038-4000M6-1.00 Serrated Hex Flange Nut (DIN 6923) (Locknut Cr+3) / Class 8 Steel / Zinc
$60.98 – $145.20Bulk Box (4,000 pcs) $145.20
SteelClass 8Zinc547052-400M14-2.00 Serrated Hex Flange Nut (DIN 6923) (Class 8 Locknut Cr+3) / Low Carbon Steel / Zinc
$74.37 – $177.07Bulk Box (400 pcs) $177.07
SteelClass 8Zinc547054-300M16-2.00 Serrated Hex Flange Nut (DIN 6923) (Locknut Cr+3) / Class 8 Steel / Zinc
$85.54 – $152.75Bulk Box (300 pcs) $152.75
SteelClass 8Zinc547058-150M20-2.50 Serrated Hex Flange Nut (DIN 6923) (Locknut Cr+3) / Class 8 Steel / Zinc
$117.59 – $209.97Bulk Box (150 pcs) $209.97
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