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Box of 100 zinc-plated steel flange nuts, 3/8"-16 thread

MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 09633 Flange Nut 3/8"-16 Steel Zinc 100 PK

SKU CH-5769-R53R9

A 100-pack of 3/8"-16 steel zinc-plated flange nuts with integrated washers to distribute clamping force and resist loosening

  • Product typeNuts
  • Integrated flange distributes load to protect parts
  • Serrated face resists loosening on uneven surfaces
  • 3/8"-16 thread fits matching bolts and studs
  • Zinc-plated steel resists corrosion in harsh environments
  • 100-piece pack covers large or repeated jobs

Flange nut with integrated washer

The MIDWEST FASTENER 09633 flange nut includes a wide flange that acts as a built-in, non-spinning washer. This design spreads clamping force across the secured part to reduce surface damage. It also helps prevent loosening on uneven fastening surfaces. The 100-pack suits maintenance shops, fleet garages and assembly lines.

Thread-on installation with hand or power tools

Spin the nut onto a 3/8"-16 bolt or stud by hand, then tighten with a standard wrench or impact driver. The integrated flange eliminates the separate washer step, cutting assembly time. Over-tightening can strip threads or deform the flange, so apply only the torque your joint requires. Zinc plating resists corrosion but is not rated for continuous salt-spray or marine immersion.

Verify thread pitch and material compatibility

Confirm the mating hardware uses 3/8"-16 threads before ordering; mismatched pitch will cause cross-threading. Ensure the clamped parts can tolerate steel-on-steel contact without galvanic concerns. The pack contains 100 pieces; check your bin capacity and reorder point so the quantity matches workflow.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 65% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameMIDWEST FASTENER
Product typeNuts

Questions about this item

How do I confirm the 09633 flange nuts are seating correctly after installation?

Tighten each nut until the integrated flange sits flat against the workpiece; the wide flange distributes clamping force evenly and resists loosening on uneven surfaces

What does the 100 PK box contain and do I need separate washers?

The package includes one hundred 3/8"-16 steel zinc-plated flange nuts; the built-in flange acts as a non-spinning washer so no separate washers are required

When should I choose the 100-count pack of 09633 flange nuts?

Select the 100-count pack when a project or maintenance job requires a larger quantity of 3/8"-16 zinc-plated flange nuts for repeated use

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