SteelThermal Black Oxide
307041-600
#4-40 x 5/16" Socket Head Cap Screws / Alloy Steel / Thermal Black Oxide
$164.34
Bulk Box (600 pcs)
$164.34
#4-40 Socket Head Cap Screws
119 products
#4-40 Socket Head 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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SteelThermal Black Oxide307038-100#4-40 x 1/8" Socket Head Cap Screws / Alloy Steel / Black Oxide
$0.27 – $89.67Package (100 pcs) $89.67
SteelThermal Black Oxide271041-1000#4-40 x 3/4" Socket Head Cap Screws with Nylon Pellet, Full Thread / Alloy Steel / Thermal Black Oxide
$85.00 – $252.97Bulk Box (1,000 pcs) $252.97
SteelThermal Black Oxide271039-1000#4-40 x 5/8" Socket Head Cap Screws with Nylon Pellet, Full Thread / Alloy Steel / Thermal Black Oxide
$128.35 – $382.00Bulk Box (1,000 pcs) $382.00
SteelThermal Black Oxide271037-1000#4-40 x 1/2" Socket Head Cap Screws with Nylon Pellet, Full Thread / Alloy Steel / Thermal Black Oxide
$753.73 – $3,364.87Bulk Box (1,000 pcs) $3,364.87
SteelThermal Black Oxide271035-100#4-40 x 3/8" Socket Head Cap Screws with Nylon Pellet, Full Thread / Alloy Steel / Thermal Black Oxide
$1,129.31 – $5,041.56Package (100 pcs) $1,129.31
SteelThermal Black Oxide271033-1000#4-40 x 1/4" Socket Head Cap Screws with Nylon Pellet, Full Thread / Alloy Steel / Thermal Black Oxide
$715.44 – $3,193.92Bulk Box (1,000 pcs) $3,193.92
SteelThermal Black Oxide015041-1000#4-40 x 3/4" Socket Head Cap Screws with Nylon Patch, Full Thread / Alloy Steel / Thermal Black Oxide
$67.30 – $200.30Bulk Box (1,000 pcs) $200.30
SteelThermal Black Oxide015039-1000#4-40 x 5/8" Socket Head Cap Screws with Nylon Patch, Full Thread / Alloy Steel / Thermal Black Oxide
$61.54 – $183.17Bulk Box (1,000 pcs) $183.17
SteelThermal Black Oxide015037-1000#4-40 x 1/2" Socket Head Cap Screws with Nylon Patch, Full Thread / Alloy Steel / Thermal Black Oxide
$57.80 – $172.02Bulk Box (1,000 pcs) $172.02
SteelThermal Black Oxide015035-1000#4-40 x 3/8" Socket Head Cap Screws with Nylon Patch, Full Thread / Alloy Steel / Thermal Black Oxide
$57.44 – $170.95Bulk Box (1,000 pcs) $170.95
SteelThermal Black Oxide015033-1000#4-40 x 1/4" Socket Head Cap Screws with Nylon Patch, Full Thread / Alloy Steel / Thermal Black Oxide
$57.03 – $169.72Bulk Box (1,000 pcs) $169.72
Stainless Steel316Passivated014003-2500#4-40 x 3/8" Socket Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$22.26 – $165.65Bulk Box (2,500 pcs) $165.65
Stainless Steel316Passivated014004-2500#4-40 x 1/2" Socket Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$34.27 – $255.00Bulk Box (2,500 pcs) $255.00
Stainless Steel316Passivated014002-2500#4-40 x 5/16" Socket Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$20.47 – $152.31Bulk Box (2,500 pcs) $152.31
Stainless Steel316Passivated014001-2500#4-40 x 1/4" Socket Head Cap Screws, Full Thread / 316 Stainless Steel / Passivated
$18.69 – $139.09Bulk Box (2,500 pcs) $139.09
Stainless Steel18-8Passivated592083-2500#4-40 x 1 1/2" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$21.10 – $156.98Bulk Box (2,500 pcs) $156.98
Stainless Steel18-8Passivated592086-2500#4-40 x 2" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$26.39 – $196.32Bulk Box (2,500 pcs) $196.32
Stainless Steel18-8Passivated592084-2500#4-40 x 1 3/4" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated / A2-70
$24.62 – $183.17Bulk Box (2,500 pcs) $183.17
Stainless Steel18-8Passivated592077-2500#4-40 x 7/8" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$13.37 – $99.50Bulk Box (2,500 pcs) $99.50
Stainless Steel18-8Passivated592071-2500#4-40 x 7/16" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$9.99 – $69.20Bulk Box (2,500 pcs) $69.20
Stainless Steel18-8Passivated592079-2500#4-40 x 1" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated / A2-70
$15.61 – $116.15Bulk Box (2,500 pcs) $116.15
Stainless Steel18-8Passivated592075-2500#4-40 x 3/4" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$12.23 – $91.02Bulk Box (2,500 pcs) $91.02
Stainless Steel18-8Passivated592082-2500#4-40 x 1 3/8" Socket Head Cap Screws / 18-8 Stainless Steel / Passivated
$19.68 – $146.45Bulk Box (2,500 pcs) $146.45
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