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Machine Screws, Star Drive Pan Head, 6-Lobe Torx, Black Oxide Stainless Steel 18-8, #4-40 x 1/2"

Diameter - Thread Pitch: #4-40
  • A machine screw is commonly identified by its small size
  • Star Drive (6 lobe) drive style can prevent accidental stripping during an installation
  • 6 Lobe grips the head better allowing for more torque on a screw
  • Star drive styles have become widespread due to their efficiency
  • Black oxide screws are chemically altered to change qualities of the metal: Most noticeably the color
  • Treatment adds another level of corrosion and abrasion resistance to stainless steel
  • Black oxide finish is infused with wax or oil during the process to comply with military specifications as a Class 4 finish

#4-40 Star drive pan head machine screws are available in black oxide 18-8 stainless steel.

Product number: 158022-0052
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Click on a size/sku in the table to view product-specific details and specifications.

Specifications

  • Color: Black
  • Condition: New
  • Corrosion Resistant: Yes
  • Diameter: #4
  • Drive Style: Star
  • Elongation: 30%
  • Head Type: Pan Head
  • Thread Direction: Right Hand
  • Thread Type: Coarse
  • Finish: Black Oxide
  • Fit: 2A
  • Grade: 18-8
  • Head Height Max: 0.08
  • Head Diameter: Max 0.219 - Min 0.205
  • Head Style: Pan
  • Length: 1/2"
  • Material: Stainless Steel
  • Overall Head Height: Max 0.080 - Min 0.070
  • Part Number: 730656589986
  • Product Type: Machine Screws
  • Size System: US
  • Size Type: Regular
  • System of Measurement: Inch
  • Thread Direction: Right Hand
  • Thread Pitch: 40 Per Inch
  • Thread Size: #4-40
  • Thread Standard: UNC
  • Thread Type: Coarse
  • Tolerance (IFI): Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
  • Star Drive: T-10
  • Weight: 1 lb

Frequently Used With

Flat Washers, Black Oxide Stainless Steel 18-8, #4 (0.125 ID x 0.312 OD x 1/32 Thick) Flat Washers, Black Oxide Stainless Steel 18-8, #4 (0.125 ID x 0.312 OD x 1/32 Thick)
Volume Pricing*
1
$0.09
($0.09/ea)
100
$6.00
($0.06/ea)
1000
$50.00
($0.05/ea)
$0.00
Lock Washers, Split Ring, Black Oxide Stainless Steel 18-8, #4 (0.120 ID x 0.209 OD x 0.025 Thick) Lock Washers, Split Ring, Black Oxide Stainless Steel 18-8, #4 (0.120 ID x 0.209 OD x 0.025 Thick)
Volume Pricing*
1
$0.05
($0.05/ea)
100
$3.00
($0.03/ea)
1000
$20.00
($0.02/ea)
$0.00
Hex Machine Screw Nuts, Black Oxide Stainless Steel 18-8, #4-40 (1/4 Flats x 3/32 Thick) Hex Machine Screw Nuts, Black Oxide Stainless Steel 18-8, #4-40 (1/4 Flats x 3/32 Thick)
Volume Pricing*
1
$0.15
($0.15/ea)
100
$8.00
($0.08/ea)
1000
$70.00
($0.07/ea)
$0.00
Nylon Lock Nuts, Stainless Steel 304, #4-40 (.251 Flats x .153 Height) Nylon Lock Nuts, Stainless Steel 304, #4-40 (.251 Flats x .153 Height)
Volume Pricing*
1
$0.07
($0.07/ea)
100
$4.00
($0.04/ea)
1000
$30.00
($0.03/ea)
$0.00
Star Drive Power Bits, T10, Length 2" Star Drive Power Bits, T10, Length 2"
Volume Pricing*
1
$2.60
($2.60/ea)
10
$21.50
($2.15/ea)
50
$97.50
($1.95/ea)
$0.00
MRO Solution 2400, Marine Grade Anti-Seize Lubricant, 8 oz. MRO Solution 2400, Marine Grade Anti-Seize Lubricant, 8 oz.
Volume Pricing*
$20.03 ea.
$0.00
Select Size/SKU & Quantity
9 Available Sizes
SIZE/SKU Review Volume Pricing* Enter Any Qty
#4-40 x 3/16"
158022-0002
1
$0.36 ($0.36/ea)
100
$23.00 ($0.23/ea)
1000
$220.00 ($0.22/ea)
$0.00
#4-40 x 1/4"
158022-0012
1
$0.35 ($0.35/ea)
100
$22.00 ($0.22/ea)
1000
$200.00 ($0.20/ea)
$0.00
#4-40 x 5/16"
158022-0022
1
$0.38 ($0.38/ea)
100
$23.00 ($0.23/ea)
1000
$220.00 ($0.22/ea)
$0.00
#4-40 x 3/8"
158022-0032
1
$0.36 ($0.36/ea)
100
$23.00 ($0.23/ea)
1000
$220.00 ($0.22/ea)
$0.00
#4-40 x 7/16"
158022-0042
1
$0.38 ($0.38/ea)
100
$25.00 ($0.25/ea)
1000
$230.00 ($0.23/ea)
$0.00
#4-40 x 1/2"
158022-0052
1
$0.39 ($0.39/ea)
100
$25.00 ($0.25/ea)
1000
$230.00 ($0.23/ea)
$0.00
#4-40 x 5/8"
158022-0062
1
$0.47 ($0.47/ea)
100
$33.00 ($0.33/ea)
1000
$310.00 ($0.31/ea)
$0.00
#4-40 x 3/4"
158022-0072
1
$0.51 ($0.51/ea)
100
$38.00 ($0.38/ea)
1000
$350.00 ($0.35/ea)
$0.00
#4-40 x 1"
158022-0082
1
$0.86 ($0.86/ea)
100
$83.00 ($0.83/ea)
1000
$810.00 ($0.81/ea)
$0.00

*Volume pricing available on select products. Products without quantity breaks are priced per unit.

Page Total: $0.00

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