Machine Bolts

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Machine bolts are used to fasten two pieces of wood or metals in manufacturing & construction applications. Raptor Supplies offers machine bolts from brands like Proto, ...Read more

FABORY -

1/4"-20 Coarse Black Oxide Grade A307A Steel Flat Machine Bolts

StyleModelThread StyleThread DirectionHead HeightHardnessHead Dia.Screw TypeClassNeck TypePrice (inc. VAT)Pkg. Qty.
AU08360.025.0225Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£56.3850
AU08360.025.0300Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£72.0550
AU08360.025.0175Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£66.6150
BU08360.025.0100Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£41.0450
AU08360.025.0250Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£63.3050
BU08360.025.0075Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£39.7950
BU08360.025.0125Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£45.6250
BU08360.025.0150Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£49.9950
AU08360.025.0200Partially ThreadedRight Hand0.078"Rockwell B10031/32"Elevator BoltClass 2ASquare£52.7850
FABORY -

3/8"-16 Coarse Black Oxide Grade A307A Steel Flat Machine Bolts

StyleModelHardnessThread StyleThread DirectionHead HeightHead Dia.Screw TypeClassNeck TypePrice (inc. VAT)Pkg. Qty.
AU08360.037.0100Rockwell B69-B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£20.3710
AU08360.037.0125Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£21.7610
AU08360.037.0175Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£24.0510
BU08360.037.0300Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£27.7710
AU08360.037.0150Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£21.2610
AU08360.037.0200Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltClass 2ASquare£25.2210
FABORY -

M8 x 1.25 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.080.001616 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£92.89100
AM01030.080.002020 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£101.55100
AM01030.080.002525 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£118.17100
BM01030.080.003030 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£134.83100
BM01030.080.003535 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£145.09100
BM01030.080.004040 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£162.54100
CM01030.080.005050 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£333.78100
CM01030.080.006060 mmFully ThreadedRight Hand8 mmRockwell C22116030 psi8 mm580 N/sq. mm£200.99100
StyleModelGrip SizeThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04200.050.02501 1/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£175.6125
AU04200.050.02251"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£41.3225
AU04200.050.01751/2"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£52.5025
AU04200.050.01501/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£43.0625
AU04200.050.02003/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£24.2025
FABORY -

M12 x 1.75 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.120.002020 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£206.5550
AM01030.120.002525 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£155.2950
AM01030.120.003030 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£150.4750
BM01030.120.003535 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£291.5250
BM01030.120.004040 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£185.6250
CM01030.120.005050 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£209.8350
CM01030.120.006060 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£233.2950
DM01030.120.007070 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£143.8125
EM01030.120.008080 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£177.2625
FM01030.120.009090 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£156.8225
FM01030.120.0100100 mmFully ThreadedRight Hand12 mmRockwell C22116030 psi13 mm580 N/sq. mm£166.9725
FABORY -

M6 x 1 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.060.001616 mmFully ThreadedRight Hand6 mmRockwell C22116030 psi6 mm580 N/sq. mm£63.85100
AM01030.060.002020 mmFully ThreadedRight Hand6 mmRockwell C22116030 psi6 mm580 N/sq. mm£77.70100
BM01030.060.003030 mmFully ThreadedRight Hand6 mmRockwell C22116030 psi6 mm580 N/sq. mm£84.57100
BM01030.060.004040 mmFully ThreadedRight Hand6 mmRockwell C22116030 psi6 mm580 N/sq. mm£95.22100
CM01030.060.005050 mmFully ThreadedRight Hand6 mmRockwell C22116030 psi6 mm580 N/sq. mm£127.40100
StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)
AZS616M10X3030 mmFully ThreadedRight Hand6 mmRockwell C2585000 psi16 mmHex Head Cap Screw£32.64
AZS616M10X3535 mmFully ThreadedRight Hand6 mmRockwell C2585000 psi16 mmHex Head Cap Screw£44.29
AZS616M10X4040 mmFully ThreadedRight Hand6 mmRockwell C2585000 psi16 mmHex Head Cap Screw£45.87
AZS616M10X5050 mmFully ThreadedRight Hand6 mmRockwell C2585000 psi16 mmHex Head Cap Screw£48.31
FABORY -

1/2"-13 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelGrip SizeThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.050.02751 1/2"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£40.7825
AU04000.050.02501 1/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£33.2725
AU04000.050.03001 3/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£36.7325
AU04000.050.02251"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£31.9625
BU04000.050.01751/2"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£30.3725
BU04000.050.01501/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£22.3325
AU04000.050.02003/4"Partially ThreadedRight Hand11/32"Rockwell B6960000 psi7/8"Heavy Hex Bolt£27.9025
FABORY -

5/8"-11 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.062.0150Fully Threaded-Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£15.0310
BB04000.062.0175Partially Threaded1/4"Right Hand27/64"--1 1/16"Heavy Hex Bolt£169.38100
CB04000.062.0250Partially Threaded1"Right Hand27/64"--1 1/16"Heavy Hex Bolt£160.6070
DB04000.062.0350Partially Threaded2"Right Hand27/64"--1 1/16"Heavy Hex Bolt£175.0560
BU04000.062.0175Partially Threaded1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£16.4610
BU04000.062.0200Partially Threaded1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£22.0810
CU04000.062.0225Partially Threaded3/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£21.7510
CU04000.062.0250Partially Threaded1"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£22.3410
CU04000.062.0275Partially Threaded1 1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£24.3710
CU04000.062.0300Partially Threaded1 1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£31.4510
DU04000.062.0325Partially Threaded1 3/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£25.7610
DU04000.062.0350Partially Threaded2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£28.3710
DU04000.062.0375Partially Threaded2 1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£30.2610
DU04000.062.0400Partially Threaded2 1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£39.2410
DU04000.062.0450Partially Threaded3"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£46.1510
DU04000.062.0500Partially Threaded3 1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£36.5010
FABORY -

3/4"-10 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleThread LengthGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Price (inc. VAT)Pkg. Qty.
AU04000.075.0150Fully Threaded1 1/2"-Right Hand1/2"Rockwell B6960000 psi1 1/4"£26.9610
AU04000.075.0175Fully Threaded1 3/4"-Right Hand1/2"Rockwell B6960000 psi1 1/4"£26.8110
BB04000.075.0450Partially Threaded1 3/4"2 3/4"Right Hand1/2"--1 1/4"£159.2430
BB04000.075.0500Partially Threaded1 3/4"3 1/4"Right Hand1/2"--1 1/4"£192.9230
CU04000.075.0200Partially Threaded1 3/4"1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£27.1110
CU04000.075.0225Partially Threaded1 3/4"1/2"Right Hand1/2"Rockwell B6960000 psi1 1/4"£31.1710
CU04000.075.0250Partially Threaded1 3/4"3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£32.7310
DU04000.075.0275Partially Threaded1 3/4"1"Right Hand1/2"Rockwell B6960000 psi1 1/4"£45.7110
DU04000.075.0300Partially Threaded1 3/4"1 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£36.0410
EU04000.075.0325Partially Threaded1 3/4"1 1/2"Right Hand1/2"Rockwell B6960000 psi1 1/4"£40.3110
EU04000.075.0350Partially Threaded1 3/4"1 3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£41.0010
EU04000.075.0375Partially Threaded1 3/4"2"Right Hand1/2"Rockwell B6960000 psi1 1/4"£43.1710
BU04000.075.0400Partially Threaded1 3/4"2 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£47.1410
BU04000.075.0450Partially Threaded1 3/4"2 3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£51.6610
BU04000.075.0500Partially Threaded1 3/4"3 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"£62.5110
FABORY -

7/8"-9 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.087.0200Fully Threaded-Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£19.885
BU04000.087.0275Partially Threaded3/4"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£28.685
CU04000.087.0400Partially Threaded2"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£31.845
DU04000.087.0300Partially Threaded1"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£31.675
CU04000.087.0350Partially Threaded1 1/2"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£32.155
EU04000.087.0500Partially Threaded3"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£41.675
BU04000.087.0225Partially Threaded1/4"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£22.525
BU04000.087.0250Partially Threaded1/2"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£24.735
CU04000.087.0325Partially Threaded1 1/4"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£30.455
EU04000.087.0450Partially Threaded2 1/2"Right Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£34.085
FABORY -

1"-8 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.100.0225Fully Threaded-Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£44.545
BU04000.100.0300Partially Threaded3/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£36.785
CU04000.100.0350Partially Threaded1 1/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£48.145
CU04000.100.0450Partially Threaded2 1/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£48.135
CU04000.100.0400Partially Threaded1 3/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£64.175
BU04000.100.0250Partially Threaded1/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£32.815
CU04000.100.0325Partially Threaded1"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£43.555
DU04000.100.0500Partially Threaded2 3/4"Right Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£58.325
StyleModelGrip SizeThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.112.04001 1/2"Partially ThreadedRight Hand3/4"Rockwell B6960000 psi1 13/16"Heavy Hex Bolt£63.485
AU04000.112.05002 1/2"Partially ThreadedRight Hand3/4"Rockwell B6960000 psi1 13/16"Heavy Hex Bolt£81.365
AU04000.112.04502"Partially ThreadedRight Hand3/4"Rockwell B6960000 psi1 13/16"Heavy Hex Bolt£68.115
KIPP -

Bolt, M30x1.5 Thread Size, SS, Bright Uncoated, 34mm Min. Bolt Ht., 11mm Center Hole Dia.

ModelItemPrice (inc. VAT)Pkg. Qty.
K0695.07101CR6ZJW£151.791
FABORY -

Hex Bolt, 1/2 In - 13 Thread Size, Steel, 1 1/2 In Lg., Blk Oxide, Gr. A307B, Hex Socket, 175 Pk

ModelItemPrice (inc. VAT)Pkg. Qty.
B04000.050.0150CG6QZV£160.59175
KIPP -

Bolt, M15x1 Thread Size, SS, Bright Uncoated, 15mm Min. Bolt Ht., 5.5mm Center Hole Dia.

ModelItemPrice (inc. VAT)Pkg. Qty.
K0694.04051CR6ZGU£72.901
KIPP -

Bolt, M30x1.5 Thread Size, SS, Bright Uncoated, 22mm Min. Bolt Ht., 13.5mm Center Hole Dia.

ModelItemPrice (inc. VAT)Pkg. Qty.
K0694.07121CR6ZJP£93.401
THOMAS & BETTS -

Bolt, Round Head Machine, Size 8 To 32 x 1/2 Inch, Steel, Pack Of 1000

ModelItemPrice (inc. VAT)Pkg. Qty.
54-541PBK8ZCG£0.181
See Details
THOMAS & BETTS -

Bolt, Round Head Machine, Size 6 To 32 x 1-1/2 Inch, Steel, Pack Of 1000

ModelItemPrice (inc. VAT)Pkg. Qty.
54-525BK8ZCH£0.551
See Details
THOMAS & BETTS -

Bolt, Flat Head Machine, Size 6 To 32 x 3/4 Inch, Steel, Pack Of 1000

ModelItemPrice (inc. VAT)Pkg. Qty.
54-622BK8ZCX£0.241
See Details
LIFTOMATIC -

Top Plate Bolt

ModelItemPrice (inc. VAT)Pkg. Qty.
6111CL6WEY-
RFQ
123...9

Machine Bolts

Machine bolts are used to fasten two pieces of wood or metals in manufacturing & construction applications. Raptor Supplies offers machine bolts from brands like Proto, Texas Pneumatic Tools, Thomas & Betts, Fabory, Vulcan Hart and more. They can be paired up with a threaded nut to be inserted into pre-drilled holes and provide tightening torque for joining materials together.

Frequently Asked Questions

What is the difference between machine bolts and machine screws?

Machine bolts are often confused with machine screws. Generally, machine screws are smaller in size compared to machine bolts, but are fully threaded. Machine bolts have a flat tip, not a pointed / tapered tip as seen in screws. Screws are typically used in pre-tapped holes or driven into materials for creating their own threads when tightened. In contrast, machine bolts are often paired with nuts at the end of the bolt for torquing during installation. Nuts are not generally mated with screws.

What are the thread fits or classes in these machine bolts?

Thread fit grades or classes of a fastener indicate the degree of looseness or tightness of mating threads. Generally, the higher the class number, the tighter the fit of the attached components (like nuts). Lower thread fit grades / classes are suitable for applications requiring quick assembly & disassembly. Higher thread classes are ideal for close tolerances, safety & strength.

What do the strength grades / classes mean in machine bolts?

  • The grade or class of a machine bolt denotes its strength & compatibility with the respective nut.
  • Generally, the higher the grade, the higher the strength of the fastener.
  • SAE grades are used for Imperial-sized bolts. Bolts having the same SAE strength grade as a nut should be used together.
  • ISO classes are used for Metric-sized bolts. Bolts having the same first digit as a nut are meant to be used together.
  • ASTM grades are based on factors like strength, high pressures & high temperatures.

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