SteelThermal Black Oxide
701330-100
#4-40 x 1 1/4" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$76.27
Package (100 pcs)
$76.27
#4-40 Button Head Cap Screws
53 products
#4-40 Button Head Socket Cap Screws in all available lengths, grades, materials, and finishes. This collection covers every #4-40 option in stock — use the filters to narrow by length, grade, material, and finish.
#4-40 Thread Specifications
- Nominal diameter: 0.112"
- Threads per inch: 40
- Tap drill (75% thread): #43 (0.089")
- Clearance hole (close fit): #31 (0.120")
- Clearance hole (free fit): #30 (0.128")
To thread a #4-40 hole, drill with a #43 (0.089") tap drill for a standard 75% thread. For a clearance hole that the #4-40 screw passes through, use #31 (0.120") for a close fit or #30 (0.128") for a free fit. Pair with a matching #4-40 nut or tapped hole.
Orders before 12 PM ET ship same day.
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Stainless Steel18-8Passivated202019-2500#4-40 x 1/2" Button Head Cap Screws, Full Thread / 18-8 Stainless Steel / Passivated
$9.99 – $54.05Bulk Box (2,500 pcs) $54.05
Stainless Steel18-8Passivated202018-2500#4-40 x 3/8" Button Head Cap Screws, Full Thread / 18-8 Stainless Steel / Passivated
$9.99 – $50.81Bulk Box (2,500 pcs) $50.81
Stainless Steel18-8Passivated202017-2500#4-40 x 1/4" Button Head Cap Screws, Full Thread / 18-8 Stainless Steel / Passivated
$9.99 – $47.76Bulk Box (2,500 pcs) $47.76
SteelThermal Black Oxide701331-2500#4-40 x 1 1/2" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$114.41 – $851.25Bulk Box (2,500 pcs) $851.25
SteelThermal Black Oxide701303-2500#4-40 x 1/8" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$52.32 – $389.25Bulk Box (2,500 pcs) $389.25
SteelThermal Black Oxide701055-2500#4-40 x 1 1/2" Button Head Cap Screws / Alloy Steel / Thermal Black Oxide
$114.41 – $851.25Bulk Box (2,500 pcs) $851.25
SteelThermal Black Oxide701048-2500#4-40 x 9/16" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$81.06 – $603.11Bulk Box (2,500 pcs) $603.11
SteelThermal Black Oxide701050-1000#4-40 x 1 1/4" Button Head Cap Screws / Alloy Steel / Thermal Black Oxide
$158.27 – $471.04Bulk Box (1,000 pcs) $471.04
SteelThermal Black Oxide701033-2500#4-40 x 1" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$31.58 – $234.94Bulk Box (2,500 pcs) $234.94
SteelThermal Black Oxide701032-2500#4-40 x 7/8" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$24.34 – $181.12Bulk Box (2,500 pcs) $181.12
SteelThermal Black Oxide701031-2500#4-40 x 3/4" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$22.95 – $170.75Bulk Box (2,500 pcs) $170.75
SteelThermal Black Oxide701028-2500#4-40 x 5/8" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$20.23 – $150.50Bulk Box (2,500 pcs) $150.50
SteelThermal Black Oxide701024-2500#4-40 x 3/16" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$21.19 – $157.69Bulk Box (2,500 pcs) $157.69
SteelThermal Black Oxide701026-2500#4-40 x 7/16" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$18.77 – $139.62Bulk Box (2,500 pcs) $139.62
SteelThermal Black Oxide701025-2500#4-40 x 5/16" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$17.35 – $129.06Bulk Box (2,500 pcs) $129.06
SteelThermal Black Oxide201017-2500#4-40 x 1/4" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$16.54 – $123.06Bulk Box (2,500 pcs) $123.06
SteelThermal Black Oxide201018-2500#4-40 x 3/8" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$17.72 – $131.81Bulk Box (2,500 pcs) $131.81
SteelThermal Black Oxide201019-2500#4-40 x 1/2" Button Head Cap Screws, Full Thread / Alloy Steel / Thermal Black Oxide
$17.72 – $131.88Bulk Box (2,500 pcs) $131.88
Stainless Steel316Passivated062021-2500#4-40 x 3/4" Button Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$23.27 – $173.12Bulk Box (2,500 pcs) $173.12
Stainless Steel316Passivated062019-2500#4-40 x 1/2" Button Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$12.00 – $89.28Bulk Box (2,500 pcs) $89.28
Stainless Steel316Passivated062020-2500#4-40 x 5/8" Button Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$19.82 – $147.50Bulk Box (2,500 pcs) $147.50
Stainless Steel316Passivated062018-2500#4-40 x 3/8" Button Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$10.49 – $78.05Bulk Box (2,500 pcs) $78.05
Stainless Steel316Passivated062017-2500#4-40 x 1/4" Button Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$9.99 – $73.44Bulk Box (2,500 pcs) $73.44
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