Bulk 1/4"-28 Fine Thread, Button Head Socket Cap screws, Alloy Steel with Black Oxide
Spec sheet for 1/4"-28 Button Head Socket Cap screws showing Head dimensions and hex key drive size.
1/4"-28 Black Button Head Socket Cap screws in increasing lengths on white background.
Black SAE 1/4-28 Button Head Socket screws stacked to show different angles on white.
1/4-28 x 1/4" Socket Button Head screw, alloy steel with black oxide finish. Shown with US penny for screw size.
Black 1/4-28 x 3/8" socket button head screws, with US penny for size.
Black 1/4-28 x 7/16" socket button head screws, with US penny for size.
Black 1/4-28 x 1/2 in. socket button head screws, with US penny for size.
Black 1/4-28 x 5/8 in. button head socket cap screws, with US penny for size.
Black 1/4-28 x 3/4" button head socket cap screws, with US penny for size.
Black 1/4-28 x 7/8" socket button head screws, with US penny for size.
Black 1/4-28 x 1 in. button head socket cap screws, with US penny to show size.
Black 1/4-28 x 1-1/4" button head socket cap screws, with US penny for size.
1/4-28 x 1-1/2" Socket Button Head screw, alloy steel with black oxide finish with US penny for size.
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Bulk 1/4"-28 Fine Thread, Button Head Socket Cap screws, Alloy Steel with Black OxideSpec sheet for 1/4"-28 Button Head Socket Cap screws showing Head dimensions and hex key drive size.1/4"-28 Black Button Head Socket Cap screws in increasing lengths on white background.Black SAE 1/4-28 Button Head Socket screws stacked to show different angles on white.1/4-28 x 1/4" Socket Button Head screw, alloy steel with black oxide finish. Shown with US penny for screw size.Black 1/4-28 x 3/8" socket button head screws, with US penny for size.Black 1/4-28 x 7/16" socket button head screws, with US penny for size.Black 1/4-28 x 1/2 in. socket button head screws, with US penny for size.Black 1/4-28 x 5/8 in. button head socket cap screws, with US penny for size.Black 1/4-28 x 3/4" button head socket cap screws, with US penny for size.Black 1/4-28 x 7/8" socket button head screws, with US penny for size.Black 1/4-28 x 1 in. button head socket cap screws, with US penny to show size.Black 1/4-28 x 1-1/4" button head socket cap screws, with US penny for size.1/4-28 x 1-1/2" Socket Button Head screw, alloy steel with black oxide finish with US penny for size.

Bulk 1/4"-28 Fine Thread, Button Head Socket Cap screws, Alloy Steel with Black Oxide

MonsterBULKS
Length: 2500 QTY - 1/4"-28x1/4"
Price:
$352.60

Description

Monster Bolts Bulk 1/4-28 Button Head Socket Cap Screws – Alloy Steel Black Oxide 5/32 inch hex

Monster Overview:

Fix your project right the first time with Bulk 1/4-28 Button Head Socket Cap Screws from Monster Bolts. These high-strength alloy steel fasteners are built to perform under pressure, featuring a fine-thread design for superior tension control in high-vibration or precision assemblies. Finished in a thermal black oxide + oil coating, they offer a smooth, low-glare appearance with mild corrosion resistance.

Manufactured to ASTM A574 standards and fully RoHS compliant, these screws are ideal for aerospace, robotics, automotive, and machinery applications demanding accuracy and strength.

Monster Features:

  • Material: Premium alloy steel meeting ASTM A574 (12.9 metric equivalent strength).
  • Finish: Thermal black oxide + oil for sleek appearance and mild corrosion protection.
  • Thread: 1/4"-28 UNF – Fine Thread (Unified National Fine).
  • Drive: 5/32" Hex Key (Allen) Drive – Available here if you need a fresh one!
  • Head Type: Button Head for a smooth, low-profile fastening solution.
  • Compliance: Fully RoHS compliant black oxide coating and process.

Monster Specifications:

Attribute Specification
Diameter 1/4"
Thread Size 1/4"-28 UNF (Fine Thread)
Drive Size 5/32" Hex Key
Head Style Button Head Socket Cap Screw
Material Alloy Steel – ASTM A574 (12.9 Equivalent)
Finish Thermal Black Oxide + Oil
Tensile Strength 180,000 psi (≤ 1/2"), 170,000 psi (> 1/2")
Hardness Rockwell C39 minimum
Standards ASME B18.3 / IFI-111

Measurement Note:

Length is measured from under the head to the tip of the screw. Button heads are not included in the overall measurement.

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