Socket Head Cap Screws

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Socket head cap screws are threaded fasteners that have a cylindrical head and a recessed hexagon drive. Also known as Allen head screws, they are turned using a hexagonal key for Allen key...Read more

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Black Oxide Cylindrical Alloy Steel Socket Head Cap Screws

Socket head cap screws are ideal for their durability, strength and ability to provide a flush surface when tightened. These socket cap screws are suitable for the machinery, automotive and aerospace industries. They are employed in assemblies requiring high torque and where space constraints demand a low-profile fastening solution.

StyleModelHead Dia.Drive SizeHead HeightThread StyleMin. Thread LengthCombined Material & GradeThread LengthTemp.PricePkg. Qty.
AU07040.006.01000.14"0.05"0.06"Partially Threaded1/2"Grade Steel1/2"-58°F to +302°F€80.351
AU07040.006.00750.14"0.05"0.06"Partially Threaded1/2"Grade Steel1/2"-58°F to +302°F€80.281
BU07040.016.00250.27"9/64"0.164"Fully Threaded1/4"Grade Steel1/4"-58°F to +302°F€20.36100
C8C150KCS0.27"9/64"0.164"Partially Threaded7/8"Grade Alloy Steel7/8"-20°F to +400°F€30.03100
D8C100KCS0.27"9/64"0.164"Fully Threaded1"Grade Alloy Steel1"-20°F to +400°F€30.11100
E8C62KCS0.27"9/64"0.164"Fully Threaded5/8"Grade Alloy Steel5/8"-20°F to +400°F€20.85100
F8C25KCS0.27"9/64"0.164"Fully Threaded1/4"Grade Alloy Steel1/4"-20°F to +400°F€23.98100
G8C37KCS0.27"9/64"0.164"Fully Threaded3/8"Grade Alloy Steel3/8"-20°F to +400°F€18.63100
H8C75KCS0.27"9/64"0.164"Fully Threaded5/8"Grade Alloy Steel3/4"-20°F to +400°F€21.74100
I8C125KCS0.27"9/64"0.164"Partially Threaded--7/8"-20°F to +400°F€26.72100
JU07000.016.01370.27"9/64"0.164"Partially Threaded7/8"Grade Steel7/8"-58°F to +302°F€45.67100
K8C50KCS0.27"9/64"0.164"Fully Threaded1/2"Grade Alloy Steel1/2"-20°F to +400°F€20.52100
L8C87KCS0.27"9/64"0.164"Fully Threaded7/8"Grade Alloy Steel7/8"-20°F to +400°F€25.31100
MU07000.016.01120.27"9/64"0.164"Partially Threaded7/8"Grade Steel7/8"-58°F to +302°F€16.84100
NU07040.009.00310.161"5/64"0.099"Fully Threaded5/16"Grade Steel5/16"-58°F to +302°F€31.59100
OU07040.009.00370.161"5/64"0.099"Fully Threaded3/8"Grade Steel3/8"-58°F to +302°F€35.61100
PU07000.009.00870.161"5/64"0.099"Partially Threaded5/8"Grade Steel5/8"-58°F to +302°F€41.651
QU07000.009.01000.161"5/64"0.099"Partially Threaded5/8"Grade Steel5/8"-58°F to +302°F€32.28100
RU07040.011.00250.183"3/32"0.112"Fully Threaded1/4"Grade Steel1/4"-58°F to +302°F€6.28100
SU07000.011.01370.183"3/32"0.112"Partially Threaded3/4"Grade Steel3/4"-58°F to +302°F€37.15100
TU07000.011.01120.183"3/32"0.112"Partially Threaded3/4"Grade Steel3/4"-58°F to +302°F€36.10100
UU07040.012.00500.205"3/32"1/8"Fully Threaded1/2"Grade Steel1/2"-58°F to +302°F€24.54100
VU07040.012.00250.205"3/32"1/8"Fully Threaded1/4"Grade Steel1/4"-58°F to +302°F€24.86100
WU07000.012.02000.218"3/32"0.125"Partially Threaded3/4"Grade Steel3/4"-58°F to +302°F€48.98100
XU07040.012.00750.218"3/32"0.125"Fully Threaded3/4"Grade Steel3/4"-58°F to +302°F€37.091
HOLO-KROME -

1/2 Inch Flat Head Cap Screws

StyleModelHead Dia.Drive SizeThread DirectionGradeDrive TypeMin. Tensile StrengthHardnessPricePkg. Qty.
A60126-5/16"---20600 psi-€76.9650
RFQ
B60132-5/16"---20600 psi-€103.3150
RFQ
C61052-5/16"-Grade F835---€77.0550
RFQ
A60128-5/16"Right Hand--20600 psi-€89.2950
RFQ
C60130-------€91.7350
RFQ
A60134-5/16"-Grade F835-20600 psi-€110.3750
RFQ
B60138-5/16"-Grade F835-20600 psi-€138.8825
RFQ
B60140-5/16"-Grade F835-20600 psi-€161.6625
RFQ
C61056-------€91.8950
RFQ
B61058-5/16"---20600 psi-€103.4950
RFQ
C601240.938"5/16"-Grade F835Hex Socket-39 HRC to 44 HRC€71.2550
RFQ
B610500.938"5/16"-Grade F835Hex Socket20600 psi39 HRC to 44 HRC€71.3150
RFQ
C610540.938"5/16"-Grade F835Hex Socket-39 HRC to 44 HRC€89.4150
RFQ
A610600.938"5/16"--Hex Socket20600 psi39 HRC to 44 HRC€110.5950
RFQ
A601360.938"5/16"-Grade F835Hex Socket20600 psi39 HRC to 44 HRC€132.3625
RFQ
HOLO-KROME -

M16 Flat Head Cap Screws

StyleModelDrive SizeTensile StrengthClassFinishMaterialHead TypePricePkg. Qty.
A87207------€179.3450
RFQ
B87212------€184.9325
RFQ
A87213------€220.1725
RFQ
A87216------€224.3925
RFQ
C87220-155000 psi-BlackAlloy, SteelFlat€279.4725
RFQ
A87221------€343.6125
RFQ
A87218------€252.0925
RFQ
A8720810 mm-Class 12.9Black OxideAlloy, Steel-€183.0750
RFQ
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1/2 Inch Low Head Cap Screws

StyleModelDrive SizeFinishPricePkg. Qty.
A68052--€83.1550
RFQ
B680541/4"Black Oxide€92.7450
RFQ
C680561/4"-€103.4750
RFQ
HOLO-KROME -

3/8 Inch Low Head Cap Screws

StyleModelDrive SizeDrive TypeMin. Tensile StrengthFinishHead TypePricePkg. Qty.
A68044-Hex Socket--Low Socket Cap€36.57100
RFQ
B680423/16"--Black Oxide-€33.13100
RFQ
A680463/16"-10800 psiBlack Oxide-€40.85100
RFQ
A680503/16"----€48.64100
RFQ
A680483/16"--Black Oxide-€44.91100
RFQ
HOLO-KROME -

5/16 Inch Low Head Cap Screws

StyleModelDrive TypeDrive SizeMin. Tensile StrengthFinishMaterialHead TypePricePkg. Qty.
A68034-5/32"7300 psiBlack Oxide--€26.83100
RFQ
B68036-5/32"-Black OxideAlloy, Steel-€29.95100
RFQ
C68040-5/32"----€44.25100
RFQ
C68038Hex5/32"7300 psi---€37.11100
RFQ
C68032Hex Socket--Black Oxide-Low Socket Cap€25.02100
RFQ
HOLO-KROME -

1/4 Inch Low Head Cap Screws

StyleModelDrive SizeDrive TypeFinishHead TypePricePkg. Qty.
A680221/8"-Black Oxide-€84.05100
B680301/8"-Black Oxide-€25.92100
RFQ
A680261/8"-Black Oxide-€84.90100
B680281/8"-Black Oxide-€56.57100
RFQ
C680243/32"Hex SocketBlack OxideLow Socket Cap€82.26100
HOLO-KROME -

#8 Low Head Cap Screws

StyleModelDrive TypeDrive SizeMin. Tensile StrengthFinishMaterialHead TypePricePkg. Qty.
A68004-0.07812"-Black Oxide--€20.98100
RFQ
A68002-0.07812"1940 psiBlack Oxide--€21.18100
RFQ
A68008Hex0.07812"1940 psi---€29.11100
RFQ
B68010Hex Socket---Alloy, SteelLow Socket Cap€30.55100
RFQ
HOLO-KROME -

3/4 Inch Flat Head Cap Screws

StyleModelDrive TypeHead Dia.Drive SizeGradeMin. Tensile StrengthHardnessFinishMaterialPricePkg. Qty.
A60160--1/2"Grade F835--Black OxideAlloy, Steel€299.6425
RFQ
A60158--1/2"Grade F835--Black OxideAlloy, Steel€274.5425
RFQ
B60168--1/2"Grade F83545100 psi-Black Oxide-€443.9625
RFQ
C60162Hex1.438"1/2"Grade F83545100 psi37 HRC to 44 HRCBlack Oxide-€318.7325
RFQ
C60166Hex Socket1.438"1/2"Grade F83545100 psi37 HRC to 44 HRCBlack Oxide-€391.1025
RFQ
HOLO-KROME -

5/8 Inch Flat Head Cap Screws

StyleModelHead Dia.Drive SizeGradeDrive TypeMin. Tensile StrengthHardnessFinishPricePkg. Qty.
A60148-3/8"-Hex30500 psi--€207.3825
RFQ
B60142-------€159.7825
RFQ
B60144-------€177.4725
RFQ
B60146-------€199.6825
RFQ
A60150-3/8"Grade F835-30500 psi-Black Oxide€251.4425
RFQ
B60152-------€259.5925
RFQ
C601541.188"3/8"Grade F835Hex30500 psi37 HRC to 44 HRC-€305.4525
RFQ
HOLO-KROME -

7/16 Inch Flat Head Cap Screws

StyleModelDrive SizeGradeMin. Tensile StrengthFinishPricePkg. Qty.
A601161/4"-15400 psi-€63.86100
RFQ
A601181/4"-15400 psi-€69.12100
RFQ
B601201/4"Grade F83515400 psiBlack Oxide€75.4750
RFQ
B601221/4"Grade F83515400 psiBlack Oxide€81.6650
RFQ
StyleModelMPNPkg. Qty.
A514365143650
RFQ
A514375143750
RFQ
A514435144350
RFQ
A514455144550
RFQ
A514675146715
RFQ
A624866248610
RFQ
A62487624878
RFQ
A624886248810
RFQ
A62491624918
RFQ
A62492624928
RFQ
A62493624938
RFQ
A62494624946
RFQ
A62496624965
RFQ
A62497624975
RFQ
A62498624985
RFQ
A674386743810
RFQ
A759417594125
RFQ
A759427594225
RFQ
A759437594320
RFQ
A759447594415
RFQ
A759457594515
RFQ
A759467594612
RFQ
A759477594720
RFQ
A759487594820
RFQ
A759517595120
RFQ
HOLO-KROME -

#5 Flat Head Cap Screws

StyleModelDrive SizeGradeDrive TypeMin. Tensile StrengthFinishMaterialPricePkg. Qty.
A600120.07812"--1150 psi--€17.33100
RFQ
A600140.07812"--1150 psi--€17.66100
RFQ
A600160.07812"-Hex1150 psi--€18.62100
RFQ
A600180.07812"Grade F835-1150 psiBlack Oxide-€19.06100
RFQ
B600200.07812"Grade F835--Black OxideAlloy, Steel€21.91100
RFQ
StyleModelHead Dia.Drive SizeGradeDrive TypeMin. Tensile StrengthHardnessFinishPricePkg. Qty.
A60002-1/16"Grade F835-880 psi-Black Oxide€17.22100
RFQ
A60004-1/16"Grade F835-880 psi-Black Oxide€17.33100
RFQ
A60006-1/16"Grade F835-880 psi-Black Oxide€18.07100
RFQ
A60008-1/16"Grade F835-880 psi-Black Oxide€18.41100
RFQ
A600100.255"1/16"-Hex Socket880 psi39 HRC to 44 HRC-€21.27100
RFQ
HOLO-KROME -

5/8 Inch Button Head Cap Screws

StyleModelDrive TypeHead Dia.Drive SizeThread DirectionLength Under HeadMin. Tensile StrengthHardnessPricePkg. Qty.
A64086--3/8"----€173.8125
RFQ
A64090-------€228.5925
RFQ
B64084Hex-3/8"--30500 psi-€157.5625
RFQ
A64088Hex Socket1"3/8"Right Hand1 1/2"-38 HRC€182.2925
RFQ
HOLO-KROME -

1 Inch Socket Head Cap Screws

StyleModelDrive SizeGradeMin. Tensile StrengthFinishMaterialPricePkg. Qty.
A720003987-Grade A574-Black OxideAlloy, Steel€4,554.7210
RFQ
A720003986-Grade A574--Alloy, Steel€3,851.4810
RFQ
A72386-Grade A574-Black OxideAlloy, Steel€1,093.6310
RFQ
A720003985-Grade A574-Black OxideAlloy, Steel€3,823.5710
RFQ
A720003962-----€2,686.9510
RFQ
B720003677-Grade A574170000 psiBlack Oxide-€509.9710
RFQ
A720003950-Grade A574-Black OxideAlloy, Steel€2,024.7010
RFQ
A72394-Grade A574-Black OxideAlloy, Steel€1,820.9310
RFQ
A723923/4"Grade A574-Black OxideAlloy, Steel€1,619.8410
RFQ
A7200039843/4"Grade A574-Black OxideAlloy, Steel€2,889.2510
RFQ
A7200039663/4"Grade A574-Black OxideAlloy, Steel€2,871.8310
RFQ
A723963/4"Grade A574-Black OxideAlloy, Steel€2,228.6310
RFQ
A723743/4"Grade A574-Black OxideAlloy, Steel€631.0910
RFQ
A723723/4"Grade A574-Black OxideAlloy, Steel€595.4510
RFQ
B723783/4"Grade A574170000 psiBlack Oxide-€692.6310
RFQ
B723683/4"Grade A574170000 psiBlack Oxide-€525.1110
RFQ
A7200036783/4"Grade A574-Black OxideAlloy, Steel€512.8510
RFQ
A7200039643/4"Grade A574-Black OxideAlloy, Steel€2,856.7110
RFQ
A723903/4"Grade A574-Black OxideAlloy, Steel€1,301.7410
RFQ
A723883/4"Grade A574-Black OxideAlloy, Steel€1,198.2810
RFQ
A7200038103/4"Grade A574-Black OxideAlloy, Steel€807.3910
RFQ
A723703/4"Grade A574-Black OxideAlloy, Steel€561.5310
RFQ
HOLO-KROME -

7/8 Inch Socket Head Cap Screws

StyleModelDrive SizeGradeMin. Tensile StrengthFinishMaterialPricePkg. Qty.
A72342-Grade A574-Black OxideAlloy, Steel€494.3710
RFQ
A723383/4"Grade A574-Black OxideAlloy, Steel€443.4610
RFQ
A723403/4"Grade A574-Black OxideAlloy, Steel€461.9410
RFQ
A723483/4"Grade A574-Black OxideAlloy, Steel€616.1010
RFQ
B723523/4"Grade A574170000 psiBlack Oxide-€742.7310
RFQ
A723543/4"Grade A574-Black OxideAlloy, Steel€819.3710
RFQ
A723563/4"Grade A574170000 psiBlack Oxide-€288.6410
A723583/4"Grade A574170000 psiBlack Oxide-€266.1110
A723603/4"Grade A574-Black OxideAlloy, Steel€1,048.4610
RFQ
A723623/4"Grade A574-Black OxideAlloy, Steel€1,254.6310
RFQ
A723643/4"Grade A574-Black OxideAlloy, Steel€1,461.3310
RFQ
A723663/4"Grade A574-Black OxideAlloy, Steel€1,698.9510
RFQ
HOLO-KROME -

5/8 Inch Socket Head Cap Screws

StyleModelDrive SizeGradeLength Under HeadDrive TypeMin. Tensile StrengthFinishMaterialPricePkg. Qty.
A73155-Grade A574--170000 psiBlack Oxide-€190.1925
RFQ
B720003003-Grade A574---Black OxideAlloy, Steel€1,995.1010
RFQ
A72288-Grade A574--170000 psiBlack Oxide-€318.3520
RFQ
B73176-------€361.3720
RFQ
B72264-Grade A574--170000 psiBlack Oxide-€92.9025
B73150-Grade A574---Black OxideAlloy, Steel€148.8825
RFQ
B72268-Grade A574--170000 psiBlack Oxide-€124.4325
B720003006-Grade A574---Black OxideAlloy, Steel€2,494.2310
RFQ
B73164-Grade A574---Black OxideAlloy, Steel€266.0025
RFQ
B720003005--10"Hex--Alloy, Steel€2,138.0910
RFQ
A72292-Grade A574--170000 psiBlack Oxide-€363.4910
RFQ
A72298-Grade A574--170000 psi--€683.7910
RFQ
C722721/2"Grade A574---Black OxideAlloy, Steel€141.4125
B722741/2"Grade A574---Black Oxide-€152.4925
C722761/2"Grade A574---Black Oxide-€158.9525
B722701/2"Grade A574--170000 psiBlack Oxide-€116.7325
B722661/2"Grade A574--170000 psiBlack Oxide-€116.6625
C722781/2"Grade A574---Black OxideAlloy, Steel€197.1825
RFQ
B722801/2"--Hex--Alloy, Steel€167.0725
C722821/2"Grade A574--170000 psiBlack Oxide-€214.7725
RFQ
B731721/2"Grade A574---Black OxideAlloy, Steel€337.5420
RFQ
A731681/2"Grade A574--170000 psiBlack Oxide-€284.4925
RFQ
D722861/2"Grade A574--170000 psiBlack Oxide-€209.9725
A731601/2"Grade A574--170000 psiBlack Oxide-€229.1325
RFQ
A731581/2"Grade A574--170000 psiBlack Oxide-€210.1525
RFQ
HOLO-KROME -

#0 Socket Head Cap Screws

StyleModelDrive SizeGradeMin. Tensile StrengthFinishMaterialPricePkg. Qty.
A73008-----€73.67100
RFQ
A730020.05"Grade A574-Black OxideAlloy, Steel€73.67100
RFQ
B730040.05"Grade A574170000 psiBlack Oxide-€49.25100
RFQ
B730060.05"Grade A574170000 psiBlack Oxide-€35.93100
RFQ
HOLO-KROME -

#8 Button Head Cap Screws

StyleModelDrive SizeMin. Tensile StrengthFinishMaterialHead TypePricePkg. Qty.
A6400001703/32"-Black OxideAlloy, Steel-€13.61100
RFQ
B640163/32"2030 psiBlack Oxide-Button Socket€13.40100
RFQ
C640183/32"2030 psiBlack Oxide-Button Socket€13.81100
RFQ
B640203/32"2030 psiBlack Oxide--€42.43100
RFQ
B640223/32"2030 psiBlack Oxide--€50.03100
RFQ
A640243/32"-Black OxideAlloy, Steel-€17.31100
RFQ
B883483/32"2030 psi---€21.88100
RFQ
HOLO-KROME -

#4 Button Head Cap Screws

StyleModelHead Dia.Drive SizeThread DirectionDrive TypeMin. Tensile StrengthHardnessFinishHead TypePricePkg. Qty.
A640000074-1/16"--880 psi---€16.2450
RFQ
B640000076-1/16"--880 psi---€21.7350
RFQ
C640000078--------€22.1450
RFQ
A640000010-1/16"--880 psi-Black Oxide-€12.97100
RFQ
C640000072--------€15.4750
RFQ
A64002-1/16"--880 psi-Black Oxide-€13.02100
RFQ
A64004-1/16"--880 psi-Black OxideButton Socket€13.45100
RFQ
A64006-1/16"--880 psi-Black Oxide-€14.36100
RFQ
A6400000300.213"1/16"Right HandHex Socket880 psi38 HRC--€13.24100
RFQ
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Socket Head Cap Screws

Socket head cap screws are threaded fasteners that have a cylindrical head and a recessed hexagon drive. Also known as Allen head screws, they are turned using a hexagonal key for Allen key engagement. Their torque specifications can be much higher than those of recessed / slotted fasteners. Socket head cap screws are ideal for fixing or clamping removable parts or sheets in machine assemblies. They are also widely used in applications with insufficient clearance to use a fastener with an external hexagon head. Raptor Supplies offers a wide range of flanged, flat and Metric socket head cap screws from brands like Micro Plastics, Morse Drum, Camcar, Foreverbolt, Grainger, Kerr Lakeside, Lisle and Snap-Loc. Grainger socket head cap screws feature a hex head for easy tightening and loosening using socket wrench drives. These flat head cap screws are less likely to snag clothing or linkages and are available in drive sizes ranging from 2 mm to 12 mm.

Frequently Asked Questions

Do socket head cap screws need washers?

Whenever you bolt down material, provide a washer between the bolt head and the material you are bolting down.

What are the benefits of using socket head cap screws?

  • Fewer socket head cap screws are needed for high clamping force in a joint resulting in reduced hardware costs.
  • The lower number of screws also leads to a weight reduction in the finished product.
  • Fewer drilled and tapped holes.

What grades are available in socket head cap screws?

Socket head cap screws are commonly available in grades 5.8, 8.8 or 10.9. Some are also offered in grade 12.9 - a screw with a tensile strength of 1200 MPa and a yield strength of 90% of this (1080 MPa).

Can I use these screws in marine applications?

If you want screws for marine applications, then go for stainless steel socket head cap screws. They are highly corrosion-resistant and can withstand moisture & splashes.

Can socket head cap screws resist periodic shocks and electric current?

Nylon socket head cap screws show excellent electrical insulation. As a result, they can be safely used in electrical applications without the risk of conducting electricity or causing shorts.