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Trim Hex Head Cap Screws 18-8 Stainless Steel #4-40

#4-40 Stainless Steel Trim Head Hex Cap Screws

Diameter - Thread Pitch: #4-40

  • #4-40
  • Hex head is designed to be driven by a socket or wrench
  • A trim head tap bolt has a smaller head than a standard hex head bolt
  • 18-8 Stainless steel trim head hex cap screws are rust resistant
  • Also referred to as tap bolts or hex bolts
  • ASME B18.2.1 Compliant

A Hex Bolt is measured as: Diameter x Thread Pitch x Length from Under Head

Select Products Below See Product Specifications
NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/16"-
SKU #1022-100000-0002
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/16"-
SKU #1022-100000-0002
1
 NA
25
 $6.25 (0.25/ea)
100
 $20.00 (0.2/ea)
1000
 $180.00 (0.18/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1/4"-
SKU #1022-100000-0014
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1/4"-
SKU #1022-100000-0014
1
 NA
25
 $7.50 (0.3/ea)
100
 $7.00 (0.07/ea)
1000
 $60.00 (0.06/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 5/16"-
SKU #1022-100000-0026
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 5/16"-
SKU #1022-100000-0026
1
 NA
25
 $2.75 (0.11/ea)
100
 $9.00 (0.09/ea)
1000
 $80.00 (0.08/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/8"-
SKU #1022-100000-0038
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/8"-
SKU #1022-100000-0038
1
 NA
25
 $2.75 (0.11/ea)
100
 $8.00 (0.08/ea)
1000
 $70.00 (0.07/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1/2"-
SKU #1022-100000-0050
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1/2"-
SKU #1022-100000-0050
1
 NA
25
 $2.75 (0.11/ea)
100
 $9.00 (0.09/ea)
1000
 $80.00 (0.08/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 5/8"-
SKU #1022-100000-0062
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 5/8"-
SKU #1022-100000-0062
1
 NA
25
 $3.75 (0.15/ea)
100
 $12.00 (0.12/ea)
1000
 $110.00 (0.11/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/4"-
SKU #1022-100000-0074
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 3/4"-
SKU #1022-100000-0074
1
 NA
25
 $3.00 (0.12/ea)
100
 $10.00 (0.1/ea)
1000
 $90.00 (0.09/ea)
Subtotal: $0.00 /
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1"-
SKU #1022-100000-0086
Trim Hex Head Cap Screws 18-8 SS - #4-40 x 1"-
SKU #1022-100000-0086
1
 NA
25
 $7.50 (0.3/ea)
100
 $28.00 (0.28/ea)
1000
 $250.00 (0.25/ea)
Subtotal: $0.00 /

Frequently Used With

Flat Washers 304 SS - #4 (.125 ID x .312 OD x .031 Thick)
Flat Washers 304 SS - #4 (.125 ID x .312 OD x .031 Thick) 1000-105092
Flat Washers 304 SS - #4 (.125 ID x .312 OD x .031 Thick)
1
 NA
25
 $1.50 (0.06/ea)
100
 $3.00 (0.03/ea)
1000
 $20.00 (0.02/ea)
Subtotal: $0.00 /
Hex Machine Nuts 304 Stainless Steel - #4-40 (1/4 Flats x 3/32 Thick)
Hex Machine Nuts 304 Stainless Steel - #4-40 (1/4 Flats x 3/32 Thick) 125052
Hex Machine Nuts 304 Stainless Steel - #4-40 (1/4 Flats x 3/32 Thick)
1
 NA
25
 $1.50 (0.06/ea)
100
 $3.00 (0.03/ea)
1000
 $20.00 (0.02/ea)
Subtotal: $0.00 /
Product Specifications
Class
2A
Corrosion Resistant
Yes
Drive Style
External Hex
Grade
18-8
Hardness
100 Rockwell B
Head Diameter
Max 0.060 - Min 0.058
Head Style
Hex
Material
Stainless Steel
Product Type
Trim Head Hex Cap Screws
System of Measurement (Unit)
Inch
Tensile PSI
100,000 - 125,000
Thread Direction
Right Hand
Thread Pitch (Count)
40 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Wrench Size
3/16"
Yield PSI
55,000 - 75,000

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