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Socket Button Head Cap Screw ASME B18.3

A button head socket screw with a low, rounded profile for a neat finish on exposed surfaces. It is tightened with a hex key, which fits into the socket drive. Commonly used on guards, covers, panels, and enclosures.

In stockShips within 3 working daysMade to orderShips within 15 working days

#6-32 UNCAlloy Steel18 variantsH0.073max.J0.078A0.262max.Basic Major Diameter0.138
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
1/4BlackenedIn stock3,0000.77
1/4PlainIn stock3,0000.77
5/16BlackenedIn stock3,0000.86
5/16PlainIn stock3,0000.86
3/8BlackenedIn stock3,0000.95
3/8PlainIn stock3,0000.95
7/16BlackenedIn stock3,0001.04
7/16PlainIn stock3,0001.04
1/2BlackenedIn stock3,0001.12
1/2PlainIn stock3,0001.12
5/8BlackenedIn stock3,0001.30
5/8PlainIn stock3,0001.30
3/4BlackenedIn stock3,0001.47
3/4PlainIn stock3,0001.47
7/8BlackenedIn stock3,0001.65
7/8PlainIn stock3,0001.65
1BlackenedIn stock3,0001.82
1PlainIn stock3,0001.82
Need another length in #6-32 UNC?Made to order · ask for a price
#8-32 UNCAlloy Steel20 variantsH0.087max.J0.094A0.312max.Basic Major Diameter0.164
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
5/16BlackenedIn stock3,0001.37
5/16PlainIn stock3,0001.37
3/8BlackenedIn stock3,0001.50
3/8PlainIn stock3,0001.50
7/16BlackenedIn stock3,0001.63
7/16PlainIn stock3,0001.63
1/2BlackenedIn stock3,0001.76
1/2PlainIn stock3,0001.76
5/8BlackenedIn stock3,0002.02
5/8PlainIn stock3,0002.02
3/4BlackenedIn stock3,0002.28
3/4PlainIn stock3,0002.28
7/8BlackenedIn stock3,0002.54
7/8PlainIn stock3,0002.54
1BlackenedIn stock3,0002.80
1PlainIn stock3,0002.80
1-1/8BlackenedIn stock3,0003.07
1-1/8PlainIn stock3,0003.07
1-1/4BlackenedIn stock3,0003.33
1-1/4PlainIn stock3,0003.33
Need another length in #8-32 UNC?Made to order · ask for a price
#10-24 UNCAlloy Steel22 variantsH0.101max.J0.125A0.361max.Basic Major Diameter0.19
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
3/8BlackenedIn stock3,0002.12
3/8PlainIn stock3,0002.12
7/16BlackenedIn stock3,0002.29
7/16PlainIn stock3,0002.29
1/2BlackenedIn stock3,0002.46
1/2PlainIn stock3,0002.46
5/8BlackenedIn stock3,0002.79
5/8PlainIn stock3,0002.79
3/4BlackenedIn stock3,0003.13
3/4PlainIn stock3,0003.13
7/8BlackenedIn stock3,0003.46
7/8PlainIn stock3,0003.46
1BlackenedIn stock3,0003.80
1PlainIn stock3,0003.80
1-1/8BlackenedIn stock3,0004.13
1-1/8PlainIn stock3,0004.13
1-1/4BlackenedIn stock3,0004.47
1-1/4PlainIn stock3,0004.47
1-3/8BlackenedIn stock3,0004.80
1-3/8PlainIn stock3,0004.80
1-1/2BlackenedIn stock3,0005.14
1-1/2PlainIn stock3,0005.14
Need another length in #10-24 UNC?Made to order · ask for a price
1/4-20 UNCAlloy Steel22 variantsH0.132max.J0.156A0.437max.Basic Major Diameter0.25
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
1/2BlackenedIn stock2,0004.53
1/2PlainIn stock2,0004.53
5/8BlackenedIn stock2,0005.12
5/8PlainIn stock2,0005.12
3/4BlackenedIn stock2,0005.72
3/4PlainIn stock2,0005.72
7/8BlackenedIn stock2,0006.32
7/8PlainIn stock2,0006.32
1BlackenedIn stock2,0006.92
1PlainIn stock2,0006.92
1-1/8BlackenedIn stock2,0007.51
1-1/8PlainIn stock2,0007.51
1-1/4BlackenedIn stock2,0008.11
1-1/4PlainIn stock2,0008.11
1-3/8BlackenedIn stock2,0008.71
1-3/8PlainIn stock2,0008.71
1-1/2BlackenedIn stock2,0009.31
1-1/2PlainIn stock2,0009.31
1-3/4BlackenedIn stock2,00010.50
1-3/4PlainIn stock2,00010.50
2BlackenedIn stock2,00011.70
2PlainIn stock2,00011.70
Need another length in 1/4-20 UNC?Made to order · ask for a price
5/16-18 UNCAlloy Steel24 variantsH0.166max.J0.188A0.547max.Basic Major Diameter0.3125
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
5/8BlackenedIn stock2,0009.03
5/8PlainIn stock2,0009.03
3/4BlackenedIn stock2,00010.00
3/4PlainIn stock2,00010.00
7/8BlackenedIn stock2,00010.96
7/8PlainIn stock2,00010.96
1BlackenedIn stock2,00011.93
1PlainIn stock2,00011.93
1-1/8BlackenedIn stock2,00012.89
1-1/8PlainIn stock2,00012.89
1-1/4BlackenedIn stock2,00013.86
1-1/4PlainIn stock2,00013.86
1-3/8BlackenedIn stock2,00014.82
1-3/8PlainIn stock2,00014.82
1-1/2BlackenedIn stock2,00015.79
1-1/2PlainIn stock2,00015.79
1-3/4BlackenedIn stock2,00017.72
1-3/4PlainIn stock2,00017.72
2BlackenedIn stock2,00019.65
2PlainIn stock2,00019.65
2-1/4BlackenedIn stock2,00021.58
2-1/4PlainIn stock2,00021.58
2-1/2BlackenedIn stock2,00023.51
2-1/2PlainIn stock2,00023.51
Need another length in 5/16-18 UNC?Made to order · ask for a price
3/8-16 UNCAlloy Steel26 variantsH0.199max.J0.219A0.656max.Basic Major Diameter0.375
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
3/4BlackenedIn stock2,00015.73
3/4PlainIn stock2,00015.73
7/8BlackenedIn stock2,00017.14
7/8PlainIn stock2,00017.14
1BlackenedIn stock2,00018.56
1PlainIn stock2,00018.56
1-1/8BlackenedIn stock2,00019.97
1-1/8PlainIn stock2,00019.97
1-1/4BlackenedIn stock2,00021.38
1-1/4PlainIn stock2,00021.38
1-3/8BlackenedIn stock2,00022.79
1-3/8PlainIn stock2,00022.79
1-1/2BlackenedIn stock2,00024.21
1-1/2PlainIn stock2,00024.21
1-3/4BlackenedIn stock2,00027.03
1-3/4PlainIn stock2,00027.03
2BlackenedIn stock2,00029.86
2PlainIn stock2,00029.86
2-1/4BlackenedIn stock2,00032.68
2-1/4PlainIn stock2,00032.68
2-1/2BlackenedIn stock2,00035.50
2-1/2PlainIn stock2,00035.50
2-3/4BlackenedIn stock2,00038.33
2-3/4PlainIn stock2,00038.33
3BlackenedIn stock2,00041.15
3PlainIn stock2,00041.15
Need another length in 3/8-16 UNC?Made to order · ask for a price
1/2-13 UNCAlloy Steel18 variantsH0.265max.J0.312A0.875max.Basic Major Diameter0.5
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
1BlackenedIn stock1,50037.66
1PlainIn stock1,50037.66
1-1/8BlackenedIn stock1,50040.22
1-1/8PlainIn stock1,50040.22
1-1/4BlackenedIn stock1,50042.78
1-1/4PlainIn stock1,50042.78
1-1/2BlackenedIn stock1,50047.89
1-1/2PlainIn stock1,50047.89
1-3/4BlackenedIn stock1,50053.01
1-3/4PlainIn stock1,50053.01
2BlackenedIn stock1,50058.12
2PlainIn stock1,50058.12
2-1/4BlackenedIn stock1,50063.24
2-1/4PlainIn stock1,50063.24
2-1/2BlackenedIn stock1,50068.35
2-1/2PlainIn stock1,50068.35
3BlackenedIn stock1,50078.59
3PlainIn stock1,50078.59
Need another length in 1/2-13 UNC?Made to order · ask for a price
5/8-11 UNCAlloy Steel10 variantsH0.331max.J0.375A1max.Basic Major Diameter0.625
LengthinFinishStockMOQpcs≈ kg/ 1,000 pcsQuantitypcs
1-1/2BlackenedIn stock1,00076.60
1-1/2PlainIn stock1,00076.60
1-3/4BlackenedIn stock1,00084.69
1-3/4PlainIn stock1,00084.69
2BlackenedIn stock1,00092.78
2PlainIn stock1,00092.78
2-1/2BlackenedIn stock1,000108.96
2-1/2PlainIn stock1,000108.96
3BlackenedIn stock1,000125.14
3PlainIn stock1,000125.14
Need another length in 5/8-11 UNC?Made to order · ask for a price

164 combinations shown

Matching components

Hex Nut ASME B18.2.2Inch Hex NutASME B18.2.2 · 1/4-20UNC–7/8-9UNCHex Jam Nut ASME B18.2.2Inch Hex Jam NutASME B18.2.2 · 1/4-20UNC–7/8-9UNCSteel Flat Washer ASTM F844 ASME B18.21.1Inch Flat WasherASME B18.21.1 · 1/4N–7/8W

Order assurance

Reports & inspection

  • EN 10204 3.1 material certificate
  • Dimensional inspection report
  • Certificate of conformity
  • Mechanical test report
  • Chemical analysis report
  • Coating inspection report
  • Batch and lot traceability

Packaging & delivery

  • Bulk carton packing
  • Small boxes with outer cartons
  • Palletized shipment
  • Fumigation-free pallets
  • Inner poly bags
  • Buyer branding and labels

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